Page started on: Mon Mar 29 10:42:52 EDT 2021
/usr/sbin/kctune -v
Tunable NSTREVENT
Description Maximum number of concurrent Streams bufcalls
Module hpstreams
Current Value 50 [Default]
Value at Next Boot 50 [Default]
Value at Last Boot 50
Default Value 50
Can Change At Next Boot Only
Tunable NSTRPUSH
Description Maximum number of Streams modules in a stream
Module hpstreams
Current Value 16 [Default]
Value at Next Boot 16 [Default]
Value at Last Boot 16
Default Value 16
Can Change At Next Boot Only
Tunable NSTRSCHED
Description Number of Streams scheduler daemons to run (0 = automatic)
Module hpstreams
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Can Change At Next Boot Only
Tunable STRCTLSZ
Description Maximum size of the control portion of a Streams message (bytes)
Module hpstreams
Current Value 1024 [Default]
Value at Next Boot 1024 [Default]
Value at Last Boot 1024
Default Value 1024
Can Change At Next Boot Only
Tunable STRMSGSZ
Description Maximum size of the data portion of a Streams message (bytes; 0 = unlimited)
Module hpstreams
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Can Change At Next Boot Only
Tunable acctresume
Description Relative percentage of free disk space required to resume accounting
Module pm_acct
Current Value 4 [Default]
Value at Next Boot 4 [Default]
Value at Last Boot 4
Default Value 4
Constraints acctresume >= -100
acctresume <= 101
acctresume > acctsuspend
Can Change At Next Boot Only
Tunable acctsuspend
Description Relative percentage of free disk space below which accounting is suspended
Module pm_acct
Current Value 2 [Default]
Value at Next Boot 2 [Default]
Value at Last Boot 2
Default Value 2
Constraints acctsuspend >= -100
acctsuspend <= 100
acctsuspend < acctresume
Can Change At Next Boot Only
Tunable aio_iosize_max
Description Maximum size (in bytes) of any single AIO I/O
Module aio
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints aio_iosize_max >= 0
aio_iosize_max <= 268435456
Can Change Immediately or at Next Boot
Tunable aio_listio_max
Description Maximum number of async IO operations that can be specified in lio_list call
Module aio
Current Value 256 [Default]
Value at Next Boot 256 [Default]
Value at Last Boot 256
Default Value 256
Constraints aio_listio_max >= 2
aio_listio_max <= 65536
aio_listio_max <= aio_max_ops
Can Change Immediately or at Next Boot
Tunable aio_max_ops
Description Maximum number of async IO operations that can be queued at any time
Module aio
Current Value 2048 [Default]
Value at Next Boot 2048 [Default]
Value at Last Boot 2048
Default Value 2048
Constraints aio_max_ops >= 2
aio_max_ops <= 1048576
aio_max_ops >= aio_listio_max
Can Change Immediately or at Next Boot
Tunable aio_monitor_run_sec
Description Frequency of AIO Thread Pool Monitor Execution (in seconds)
Module aio
Current Value 30 [Default]
Value at Next Boot 30 [Default]
Value at Last Boot 30
Default Value 30
Constraints aio_monitor_run_sec >= 1
aio_monitor_run_sec <= 60
Can Change Immediately or at Next Boot
Tunable aio_physmem_pct
Description Percentage of physical memory lockable for request call-back operations
Module aio
Current Value 10 [Default]
Value at Next Boot 10 [Default]
Value at Last Boot 10
Default Value 10
Constraints aio_physmem_pct >= 5
aio_physmem_pct <= 50
Can Change Immediately or at Next Boot
Tunable aio_prio_delta_max
Description Greatest delta (slowdown factor) allowed in async IO request priorities
Module aio
Current Value 20 [Default]
Value at Next Boot 20 [Default]
Value at Last Boot 20
Default Value 20
Constraints aio_prio_delta_max >= 0
aio_prio_delta_max <= 20
Can Change Immediately or at Next Boot
Tunable aio_proc_max
Description Maximum number of AIOs that can be queued by any process (replaces aio_max_ops)
Module aio
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints aio_proc_max >= 0
aio_proc_max <= 268435456
Can Change Immediately or at Next Boot
Tunable aio_proc_thread_pct
Description Percentage of All Process Threads Allowed in AIO Pool
Module aio
Current Value 70 [Default]
Value at Next Boot 70 [Default]
Value at Last Boot 70
Default Value 70
Constraints aio_proc_thread_pct >= 10
aio_proc_thread_pct <= 100
Can Change Immediately or at Next Boot
Tunable aio_proc_threads
Description Maximum Number of Process Threads Allowed in AIO Pool
Module aio
Current Value 1024 [Default]
Value at Next Boot 1024 [Default]
Value at Last Boot 1024
Default Value 1024
Constraints aio_proc_threads >= 4
aio_proc_threads <= 2048
Can Change Immediately or at Next Boot
Tunable aio_req_per_thread
Description Desirable Ratio Between Number Of Pending AIO Requests and Servicing Threads
Module aio
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Constraints aio_req_per_thread >= 1
aio_req_per_thread <= 100
Can Change Immediately or at Next Boot
Tunable allocate_fs_swapmap
Description Enables allocation of file system swap map space during swapon(2) call (Boolean)
Module vm
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints allocate_fs_swapmap >= 0
allocate_fs_swapmap <= 1
Can Change At Next Boot Only
Tunable alwaysdump
Description Bitmap of memory page classes to include in a crash dump
Module dump
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Can Change Immediately or at Next Boot
Tunable audit_memory_usage
Description Percentage of physical memory audit subsystem can use
Module audit
Current Value 5 [Default]
Value at Next Boot 5 [Default]
Value at Last Boot 5
Default Value 5
Constraints audit_memory_usage >= 1
audit_memory_usage <= 10
Can Change Immediately or at Next Boot
Tunable audit_track_paths
Description Enables tracking of the root and current working dirs (Boolean)
Module audit
Current Value 1
Value at Next Boot 1
Value at Last Boot 1
Default Value 1 (automatic)
Constraints audit_track_paths >= 0
audit_track_paths <= 1
Can Change Immediately (Automatic Tuning Disabled)
Tunable base_pagesize
Description Base page size in kBytes (i.e., NBPG)
Module vm
Current Value 4 [Default]
Value at Next Boot 4 [Default]
Value at Last Boot 4
Default Value 4
Constraints base_pagesize >= 4
base_pagesize <= 64
base_pagesize is a power of 2
(1024 * base_pagesize) <= fcache_min_preg_size
(1024 * base_pagesize) <= fcache_max_preg_size
(1024 * base_pagesize) <= fcache_default_preg_size
Can Change At Next Boot Only
Tunable btree_prune_min_interval
Description Minimum time (seconds) between consecutive btree prunes
Module vm_vasm
Current Value 90 [Default]
Value at Next Boot 90 [Default]
Value at Last Boot 90
Default Value 90
Constraints btree_prune_min_interval >= 60
btree_prune_min_interval <= 300
Can Change Immediately or at Next Boot
Tunable ciss_panic_on_lockup
Description Panic the system when FW lockup happens
Module ciss
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints ciss_panic_on_lockup >= 0
ciss_panic_on_lockup <= 1
Can Change Immediately or at Next Boot
Tunable close_wake_blkdflks
Description Wakeup the threads blocked for file segment lock on closing the file (Boolean)
Module fs_filedscrp
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints close_wake_blkdflks >= 0
close_wake_blkdflks <= 1
Can Change At Next Boot Only
Tunable cmpt_restrict_tl
Description Restrict compartment streams local transport connections
Module sec_rule_framework
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints cmpt_restrict_tl >= 0
cmpt_restrict_tl <= 1
Can Change Immediately or at Next Boot
Tunable copy_on_write
Description Copy-On-Write semantics for private objects (1 = enabled; 0=disabled)
Module vm_vasm
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Constraints copy_on_write >= 0
copy_on_write <= 1
Can Change Immediately or at Next Boot
Tunable core_addshmem_read
Description Includes readable shared memory segments in process core dumps (Boolean)
Module vm
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints core_addshmem_read >= 0
core_addshmem_read <= 1
Can Change Immediately or at Next Boot
Tunable core_addshmem_write
Description Includes writable shared memory segments in process core dumps (Boolean)
Module vm
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints core_addshmem_write >= 0
core_addshmem_write <= 1
Can Change Immediately or at Next Boot
Tunable create_fastlinks
Description Enables storage of symbolic links in HFS inode structures (Boolean)
Module ufs
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Can Change At Next Boot Only
Tunable default_disk_ir
Description Enables SCSI disks to cache writes ("immediate reporting") (Boolean)
Module wsio
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Can Change At Next Boot Only
Tunable desfree_pct
Description Percentage of physical memory to try to keep free via swapper daemon
Module vm
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints desfree_pct >= 0
desfree_pct <= 30
desfree_pct <= lotsfree_pct
Can Change Immediately or at Next Boot
Tunable diskaudit_flush_interval
Description The interval between two periodic flushes for diskaudit(counted in seconds)
Module diskaudit
Current Value 5 [Default]
Value at Next Boot 5 [Default]
Value at Last Boot 5
Default Value 5
Constraints diskaudit_flush_interval >= 1
diskaudit_flush_interval <= 100
Can Change Immediately or at Next Boot
Tunable dlpi_max_clones
Description Maximum number of clone streams on Data Link Provider Interface device
Module dlpi
Current Value 3992 [Default]
Value at Next Boot 3992 [Default]
Value at Last Boot 3992
Default Value 3992
Constraints dlpi_max_clones >= 256
dlpi_max_clones <= 4294967295
Can Change Immediately or at Next Boot
Tunable dlpi_max_ub_promisc
Description Maximum number of unbound promiscuous streams allowed on an interface
Module dlpi
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Constraints dlpi_max_ub_promisc >= 1
dlpi_max_ub_promisc <= 16
Can Change Immediately or at Next Boot
Tunable dma32_pool_size
Description Amount of memory to set aside for 32-bit DMA (bytes)
Module wsio
Current Value 268435456 [Default]
Value at Next Boot 268435456 [Default]
Value at Last Boot 268435456
Default Value 268435456
Constraints dma32_pool_size <= 4294967296
Can Change At Next Boot Only
Tunable dmp_rootdev_is_vol
Description Root is controlled by DMP (boolean)
Module vxdmp
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Can Change At Next Boot Only
Tunable dmp_swapdev_is_vol
Description Swap is controlled by DMP (boolean)
Module vxdmp
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Can Change At Next Boot Only
Tunable dnlc_hash_locks
Description Number of locks for Directory Name Lookup Cache (DNLC)
Module fs
Current Value 512 [Default]
Value at Next Boot 512 [Default]
Value at Last Boot 512
Default Value 512
Constraints dnlc_hash_locks >= 16
dnlc_hash_locks <= 8192
dnlc_hash_locks is a power of 2
(8 * dnlc_hash_locks) <= ncsize
Can Change At Next Boot Only
Tunable dontdump
Description Bitmap of memory page classes to exclude from a crash dump
Module dump
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Can Change Immediately or at Next Boot
Tunable dst
Description Daylight Savings Time policy (0=none; 1=US; 2=Aus; 3,4,5=West,Cent,East Europe)
Module pm_clock
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Constraints dst >= 0
dst <= 5
Can Change At Next Boot Only
Tunable dump_compress_on
Description Enable compressed dump functionality
Module dump
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Constraints dump_compress_on >= 0
dump_compress_on <= 1
Can Change Immediately or at Next Boot
Tunable dump_concurrent_on
Description Enable concurrent dump functionality
Module dump
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Constraints dump_concurrent_on >= 0
dump_concurrent_on <= 1
Can Change Immediately or at Next Boot
Tunable executable_stack
Description Enables execution of code on a stack (0 = no, 1 = yes, 2 = yes but warn)
Module vm
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints executable_stack >= 0
executable_stack <= 2
Can Change Immediately or at Next Boot
Tunable expanded_node_host_names
Description Enables expanded node and host names (read manpage for warnings)
Module sysconfig
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints expanded_node_host_names >= 0
expanded_node_host_names <= 1
Can Change Immediately or at Next Boot
Tunable fcache_fb_policy
Description Policy for flushing data to disk
Module vm_fs
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints fcache_fb_policy >= 0
fcache_fb_policy <= 2
Can Change Immediately or at Next Boot
Tunable fcache_seqlimit_file
Description Per file sequential access limit (percent of maximum file cache size)
Module vm_fs
Current Value 100 [Default]
Value at Next Boot 100 [Default]
Value at Last Boot 100
Default Value 100
Constraints fcache_seqlimit_file >= 0
fcache_seqlimit_file <= 100
Can Change Immediately or at Next Boot
Tunable fcache_seqlimit_scope
Description Sequential access detection control for file cache
Module vm_fs
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints fcache_seqlimit_scope >= 0
fcache_seqlimit_scope <= 3
Can Change Immediately or at Next Boot
Tunable fcache_seqlimit_system
Description System sequential access limit (percent of maximum file cache size)
Module vm_fs
Current Value 100 [Default]
Value at Next Boot 100 [Default]
Value at Last Boot 100
Default Value 100
Constraints fcache_seqlimit_system >= 0
fcache_seqlimit_system <= 100
Can Change Immediately or at Next Boot
Tunable fcache_vhand_ctl
Description Paging threshold control for the file cache
Module vm_fs
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints fcache_vhand_ctl >= 0
fcache_vhand_ctl <= 10
Can Change Immediately or at Next Boot
Tunable fcd_disable_mgmt_lun
Description Disable creation of legacy management LUN for Array device
Module fcd
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints fcd_disable_mgmt_lun >= 0
fcd_disable_mgmt_lun <= 1
Can Change Immediately or at Next Boot
Tunable filecache_max
Description Maximum amount of physical memory to be used for caching file I/O data
Module fs_bufcache
Current Value 2032214016 [Default]
Value at Next Boot Default (automatic)
Value at Last Boot 2032214016
Default Value 2032214016 (automatic)
Can Change Automatic Tuning Enabled
Tunable filecache_min
Description Minimum guaranteed physical memory used for caching file I/O data
Module fs_bufcache
Current Value 203218944 [Default]
Value at Next Boot Default (automatic)
Value at Last Boot 203218944
Default Value 203218944 (automatic)
Can Change Automatic Tuning Enabled
Tunable fr_rulecache
Description Modify IPFilter to check rule cache before doing rule walk
Module ipf
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Default Value 0
Constraints fr_rulecache >= 0
fr_rulecache <= 1
Can Change Immediately or at Next Boot
Tunable fr_statemax
Description Modify maximum number of TCP states in IPFilter
Module ipf
Current Value 800000 [Default]
Value at Next Boot 800000 [Default]
Default Value 800000
Constraints fr_statemax >= 4000
fr_statemax <= 1600000
Can Change Immediately or at Next Boot
Tunable fr_tcpidletimeout
Description Modify the default idle timeout for TCP states in IPFilter
Module ipf
Current Value 86400 [Default]
Value at Next Boot 86400 [Default]
Default Value 86400
Constraints fr_tcpidletimeout >= 240
fr_tcpidletimeout <= 86400
Can Change Immediately or at Next Boot
Tunable fr_tcptimewait
Description Modify the default time wait time after closing connection in IPFilter
Module ipf
Current Value 120 [Default]
Value at Next Boot 120 [Default]
Default Value 120
Constraints fr_tcptimewait >= 2
fr_tcptimewait <= 120
Can Change Immediately or at Next Boot
Tunable frnat_tcptimewait
Description Modify the default NAT time wait time after closing connection in IPFilter
Module ipf
Current Value 120 [Default]
Value at Next Boot 120 [Default]
Default Value 120
Constraints frnat_tcptimewait >= 2
frnat_tcptimewait <= 120
Can Change Immediately or at Next Boot
Tunable fs_async
Description Enables write calls to return before write operation is complete (Boolean)
Module fs
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints fs_async >= 0
fs_async <= 1
Can Change At Next Boot Only
Tunable fs_symlinks
Description Maximum number of symbolic links used to resolve a path name
Module fs
Current Value 20 [Default]
Value at Next Boot 20 [Default]
Value at Last Boot 20
Default Value 20
Constraints fs_symlinks >= 20
fs_symlinks <= 1024
Can Change Immediately or at Next Boot
Tunable ftable_hash_locks
Description Number of file table locks
Module fs_filedscrp
Current Value 64 [Default]
Value at Next Boot 64 [Default]
Value at Last Boot 64
Default Value 64
Can Change At Next Boot Only
Tunable gvid_no_claim_dev
Description PCI Vendor/Device ID that gvid driver should not claim
Module gvid_core
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints gvid_no_claim_dev >= 0
gvid_no_claim_dev <= 4294967295
Can Change At Next Boot Only
Tunable hires_timeout_enable
Description Enable high resolution timer support
Module pm_callout
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints hires_timeout_enable >= 0
hires_timeout_enable <= 1
Can Change Immediately or at Next Boot
Tunable hp_hfs_mtra_enabled
Description Enables HFS multi-threaded read-ahead (Boolean)
Module ufs
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Can Change At Next Boot Only
Tunable intr_strobe_ics_pct
Description Maximum percentage of time a processor is allowed to spend in interrupt context
Module svc
Current Value 80 [Default]
Value at Next Boot 80 [Default]
Value at Last Boot 80
Default Value 80
Constraints intr_strobe_ics_pct >= 80
intr_strobe_ics_pct <= 100
Can Change Immediately or at Next Boot
Tunable io_ports_hash_locks
Description Number of I/O port locks
Module io
Current Value 64 [Default]
Value at Next Boot 64 [Default]
Value at Last Boot 64
Default Value 64
Can Change At Next Boot Only
Tunable ipf_icmp6_passthru
Description Modify IPFilter to allow ICMPv6 ND messages or rules to act on them
Module ipf
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Default Value 0
Constraints ipf_icmp6_passthru >= 0
ipf_icmp6_passthru <= 1
Can Change Immediately or at Next Boot
Tunable ipl_buffer_sz
Description Modify size of IPFilter kernel logging buffer
Module ipf
Current Value 8192 [Default]
Value at Next Boot 8192 [Default]
Default Value 8192
Constraints ipl_buffer_sz >= 1024
ipl_buffer_sz <= 163840
Can Change Immediately or at Next Boot
Tunable ipl_logall
Description Modify IPFilter log size, i.e whole packet or first 128 bytes
Module ipf
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Default Value 0
Constraints ipl_logall >= 0
ipl_logall <= 1
Can Change Immediately or at Next Boot
Tunable ipl_suppress
Description Modify IPFilter logging behaviour for identical records
Module ipf
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Default Value 1
Constraints ipl_suppress >= 0
ipl_suppress <= 1
Can Change Immediately or at Next Boot
Tunable ipmi_watchdog_action
Description Sets the action for the IPMI watchdog timer (0=no action)
Module ipmi
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints ipmi_watchdog_action >= 0
ipmi_watchdog_action <= 3
Can Change Immediately or at Next Boot
Tunable ipnat_enable
Description Modify IPFilter to enable/disable NAT to improve performance
Module ipf
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Default Value 1
Constraints ipnat_enable >= 0
ipnat_enable <= 1
Can Change Immediately or at Next Boot
Tunable ipnat_hostmap_size
Description Modify size of hash table holding host related info when LARGE NAT is set
Module ipf
Current Value 127 [Default]
Value at Next Boot 127 [Default]
Default Value 127
Constraints ipnat_hostmap_size >= 127
ipnat_hostmap_size <= 8191
Can Change Immediately or at Next Boot
Tunable ipnat_largenat_enable
Description Modify IPFilter to enable/disable LARGE NAT to enhance scalability of NAT
Module ipf
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Default Value 0
Constraints ipnat_largenat_enable >= 0
ipnat_largenat_enable <= 1
Can Change Immediately or at Next Boot
Tunable ipnat_nat_size
Description Modify size of hash table holding the NAT rules when LARGE NAT is set
Module ipf
Current Value 127 [Default]
Value at Next Boot 127 [Default]
Default Value 127
Constraints ipnat_nat_size >= 127
ipnat_nat_size <= 2047
Can Change Immediately or at Next Boot
Tunable ipnat_nat_table_size
Description Modify size of hash table holding active NAT/RDR entries when LARGE NAT is set
Module ipf
Current Value 127 [Default]
Value at Next Boot 127 [Default]
Default Value 127
Constraints ipnat_nat_table_size >= 127
ipnat_nat_table_size <= 16383
Can Change Immediately or at Next Boot
Tunable ipnat_rdr_size
Description Modify size of hash table holding RDR rules when LARGE NAT is set
Module ipf
Current Value 127 [Default]
Value at Next Boot 127 [Default]
Default Value 127
Constraints ipnat_rdr_size >= 127
ipnat_rdr_size <= 2047
Can Change Immediately or at Next Boot
Tunable kmem_aggressive_caching
Description Policy hint for caching pages underlying the kernel dynamic memory.
Module vm_kmem
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints kmem_aggressive_caching >= 0
kmem_aggressive_caching <= 10
Can Change Immediately or at Next Boot
Tunable kmem_do_largepage_cache_demotion
Description Enable (1) or Disable (0) Kernel dynamic memory demotion
Module vm_kmem
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Constraints kmem_do_largepage_cache_demotion >= 0
kmem_do_largepage_cache_demotion <= 1
Can Change Immediately or at Next Boot
Tunable kmem_va_cache_enable
Description Enable improved per processor kernel Virtual Address Cache
Module vm_kmem
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Constraints kmem_va_cache_enable >= 0
kmem_va_cache_enable <= 1
Can Change At Next Boot Only
Tunable ksi_alloc_max
Description Maximum number of queued signals pending on the system
Module pm_sig
Current Value 33600 [Default]
Value at Next Boot 33600 [Default]
Value at Last Boot 33600
Default Value 33600
Constraints ksi_alloc_max >= 32
Can Change Immediately or at Next Boot
Tunable ksi_send_max
Description Maximum number of queued signals a sending process may have pending
Module pm_sig
Current Value 32 [Default]
Value at Next Boot 32 [Default]
Value at Last Boot 32
Default Value 32
Constraints ksi_send_max >= 32
Can Change At Next Boot Only
Tunable lcpu_attr
Description Toggles lcpu attribute of default pset (0 = disabled; 1 = enabled)
Module pm_sched
Current Value 0 [Default]
Value at Next Boot Default (automatic)
Value at Last Boot 0
Default Value 0 (automatic)
Constraints lcpu_attr >= 0
lcpu_attr <= 1
Can Change Automatic Tuning Enabled
Tunable lotsfree_pct
Description Free memory (% of physical memory) past which swapper daemon does not run
Module vm
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints lotsfree_pct >= 0
lotsfree_pct <= 30
lotsfree_pct >= desfree_pct
Can Change Immediately or at Next Boot
Tunable max_acct_file_size
Description Maximum size of accounting file (bytes)
Module pm_acct
Current Value 2560000 [Default]
Value at Next Boot 2560000 [Default]
Value at Last Boot 2560000
Default Value 2560000
Constraints max_acct_file_size <= 2147483647
Can Change Immediately or at Next Boot
Tunable max_async_ports
Description Maximum number of asyncdsk ports
Module asyncdsk
Current Value 4096 [Default]
Value at Next Boot 4096 [Default]
Value at Last Boot 4096
Default Value 4096
Constraints max_async_ports >= 1
max_async_ports <= 4194304
Can Change Immediately or at Next Boot
Tunable max_mem_window
Description Maximum number of memory windows
Module vm
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints max_mem_window >= 0
max_mem_window <= 65535
Can Change Immediately or at Next Boot
Tunable max_thread_proc
Description Maximum number of threads in each process
Module pm_proc
Current Value 3000
Value at Next Boot 3000
Value at Last Boot 3000
Default Value 256
Constraints max_thread_proc >= 64
max_thread_proc <= nkthread
Can Change Immediately or at Next Boot
Tunable maxdsiz
Description Maximum size of the data segment of a 32-bit process (bytes)
Module vm
Current Value 2147483648
Value at Next Boot 2147483648
Value at Last Boot 2147483648
Default Value 1073741824
Constraints maxdsiz >= 262144
maxdsiz <= 4294963200
Can Change Immediately or at Next Boot
Tunable maxdsiz_64bit
Description Maximum size of the data segment of a 64-bit process (bytes)
Module vm
Current Value 4294967296 [Default]
Value at Next Boot 4294967296 [Default]
Value at Last Boot 4294967296
Default Value 4294967296
Constraints maxdsiz_64bit >= 262144
maxdsiz_64bit <= 4396972765184
Can Change Immediately or at Next Boot
Tunable maxfiles
Description Initial (soft) maximum number of file descriptors per process
Module fs
Current Value 2048 [Default]
Value at Next Boot Default (automatic)
Value at Last Boot 2048
Default Value 2048 (automatic)
Constraints maxfiles >= 32
maxfiles <= 1048576
maxfiles <= maxfiles_lim
Can Change At Next Boot Only
Tunable maxfiles_lim
Description Hard maximum number of file descriptors per process
Module fs
Current Value 4096 [Default]
Value at Next Boot 4096 [Default]
Value at Last Boot 4096
Default Value 4096
Constraints maxfiles_lim >= 32
maxfiles_lim <= 1048576
maxfiles_lim >= maxfiles
Can Change Immediately or at Next Boot
Tunable maxrsessiz
Description Maximum size of the register stack of a 32-bit process (bytes)
Module vm
Current Value 8388608 [Default]
Value at Next Boot 8388608 [Default]
Value at Last Boot 8388608
Default Value 8388608
Constraints maxrsessiz >= 262144
maxrsessiz <= 401604608
Can Change At Next Boot Only
Tunable maxrsessiz_64bit
Description Maximum size of the register stack of a 64-bit process (bytes)
Module vm
Current Value 8388608 [Default]
Value at Next Boot 8388608 [Default]
Value at Last Boot 8388608
Default Value 8388608
Constraints maxrsessiz_64bit >= 262144
maxrsessiz_64bit <= 1073741824
Can Change At Next Boot Only
Tunable maxssiz
Description Maximum size of the stack segment of a 32-bit process (bytes)
Module vm
Current Value 8388608 [Default]
Value at Next Boot 8388608 [Default]
Value at Last Boot 8388608
Default Value 8388608
Constraints maxssiz >= 262144
maxssiz <= 401604608
Can Change Immediately or at Next Boot
Tunable maxssiz_64bit
Description Maximum size of the stack segment of a 64-bit process (bytes)
Module vm
Current Value 268435456 [Default]
Value at Next Boot 268435456 [Default]
Value at Last Boot 268435456
Default Value 268435456
Constraints maxssiz_64bit >= 262144
maxssiz_64bit <= 2147483648
Can Change Immediately or at Next Boot
Tunable maxtsiz
Description Maximum size of the text (code) segment of a 32-bit process (bytes)
Module vm
Current Value 100663296 [Default]
Value at Next Boot 100663296 [Default]
Value at Last Boot 100663296
Default Value 100663296
Constraints maxtsiz >= 262144
maxtsiz <= 1073741824
Can Change Immediately or at Next Boot
Tunable maxtsiz_64bit
Description Maximum size of the text (code) segment of a 64-bit process (bytes)
Module vm
Current Value 1073741824 [Default]
Value at Next Boot 1073741824 [Default]
Value at Last Boot 1073741824
Default Value 1073741824
Constraints maxtsiz_64bit >= 262144
maxtsiz_64bit <= 4398046511103
Can Change Immediately or at Next Boot
Tunable maxuprc
Description Maximum number of processes for each non-root user
Module pm_proc
Current Value 256 [Default]
Value at Next Boot 256 [Default]
Value at Last Boot 256
Default Value 256
Constraints maxuprc >= 3
maxuprc <= nproc - 5
Can Change Immediately or at Next Boot
Tunable mca_recovery_on
Description Enable recovery from MCA
Module shutdown
Current Value 0 [Default]
Value at Next Boot Default (automatic)
Value at Last Boot 0
Default Value 0 (automatic)
Constraints mca_recovery_on >= 0
mca_recovery_on <= 1
Can Change Automatic Tuning Enabled
Tunable mdep_reduce_rse_size
Description Restricts the CPU to use only 96 RSE registers for the next boot
Module svc
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints mdep_reduce_rse_size >= 0
mdep_reduce_rse_size <= 1
Can Change At Next Boot Only
Tunable mpas_readonly_text
Description Enable read-only text for 32-bit MPAS processes
Module vm
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints mpas_readonly_text >= 0
mpas_readonly_text <= 1
Can Change Immediately or at Next Boot
Tunable mprotect_reduce_protid_on
Description Reduces protid usage for shared memory segments (Boolean)
Module vm
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints mprotect_reduce_protid_on >= 0
mprotect_reduce_protid_on <= 1
Can Change Immediately or at Next Boot
Tunable msgmbs
Description Total Message Space for Sys V IPC Message Queues (MB)
Module pm_usync
Current Value 8 [Default]
Value at Next Boot 8 [Default]
Value at Last Boot 8
Default Value 8
Constraints msgmbs >= 1
msgmbs <= 1048576
Can Change Immediately or at Next Boot
Tunable msgmnb
Description Maximum size of a message queue (bytes)
Module pm_usync
Current Value 16384 [Default]
Value at Next Boot 16384 [Default]
Value at Last Boot 16384
Default Value 16384
Constraints msgmnb >= 0
msgmnb <= 67108864
Can Change Immediately or at Next Boot
Tunable msgmni
Description Maximum number of message queues
Module pm_usync
Current Value 512 [Default]
Value at Next Boot 512 [Default]
Value at Last Boot 512
Default Value 512
Constraints msgmni >= 1
msgmni <= 1000000
Can Change Immediately or at Next Boot
Tunable msgtql
Description Maximum number of messages queued at any time
Module pm_usync
Current Value 1024 [Default]
Value at Next Boot 1024 [Default]
Value at Last Boot 1024
Default Value 1024
Can Change Immediately or at Next Boot
Tunable ncdnode
Description Maximum number of open CDFS files (system-wide)
Module cdfs
Current Value 150 [Default]
Value at Next Boot 150 [Default]
Value at Last Boot 150
Default Value 150
Constraints ncdnode >= 25
Can Change At Next Boot Only
Tunable nclist
Description Number of blocks for pty and tty data transfers
Module tty
Current Value 8292 [Default]
Value at Next Boot 8292 [Default]
Value at Last Boot 8292
Default Value 8292
Constraints nclist >= 132
Can Change At Next Boot Only
Tunable ncsize
Description Number of Directory Name Lookup Cache (DNLC) entries
Module fs
Current Value 8976 [Default]
Value at Next Boot 8976 [Default]
Value at Last Boot 8976
Default Value 8976
Constraints ncsize >= 128
ncsize >= (8 * dnlc_hash_locks)
Can Change At Next Boot Only
Tunable nflocks
Description Maximum number of file locks
Module vfs_lock
Current Value 4096 [Default]
Value at Next Boot Default (automatic)
Value at Last Boot 4096
Default Value 4096 (automatic)
Constraints nflocks >= 50
nflocks <= 16777216
Can Change Automatic Tuning Enabled
Tunable nfs2_max_threads
Description Max number of active async threads for future mounts
Module nfs_client_pv2
Current Value 8 [Default]
Value at Next Boot 8 [Default]
Value at Last Boot 8
Default Value 8
Constraints nfs2_max_threads >= 2
nfs2_max_threads <= 2147483647
Can Change Immediately or at Next Boot
Tunable nfs2_nra
Description Number of 8k blocks to read ahead
Module nfs_client_pv2
Current Value 4 [Default]
Value at Next Boot 4 [Default]
Value at Last Boot 4
Default Value 4
Constraints nfs2_nra >= 0
nfs2_nra <= 2147483647
Can Change Immediately or at Next Boot
Tunable nfs3_bsize
Description Client block size for future mounts
Module nfs_client_pv3
Current Value 32768 [Default]
Value at Next Boot 32768 [Default]
Value at Last Boot 32768
Default Value 32768
Constraints nfs3_bsize >= 4096
nfs3_bsize <= 2147483647
nfs3_bsize is a power of 2
Can Change Immediately or at Next Boot
Tunable nfs3_do_readdirplus
Description Turn off the NFSv3 readdirplus feature
Module nfssrv
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Constraints nfs3_do_readdirplus >= 0
nfs3_do_readdirplus <= 1
Can Change Immediately or at Next Boot
Tunable nfs3_jukebox_delay
Description Delay between retransmissions when receiving NFS3ERR_JUKEBOX
Module nfs_client_pv3
Current Value 1000 [Default]
Value at Next Boot 1000 [Default]
Value at Last Boot 1000
Default Value 1000
Constraints nfs3_jukebox_delay >= 0
nfs3_jukebox_delay <= 2147483647
Can Change Immediately or at Next Boot
Tunable nfs3_max_commit_threads
Description Max number of active async commit threads for future mounts
Module nfs_client_pv3
Current Value 8 [Default]
Value at Next Boot 8 [Default]
Value at Last Boot 8
Default Value 8
Constraints nfs3_max_commit_threads >= 2
nfs3_max_commit_threads <= 32
Can Change Immediately or at Next Boot
Tunable nfs3_max_threads
Description Max number of active async threads for future mounts
Module nfs_client_pv3
Current Value 8 [Default]
Value at Next Boot 8 [Default]
Value at Last Boot 8
Default Value 8
Constraints nfs3_max_threads >= 2
nfs3_max_threads <= 2147483647
Can Change Immediately or at Next Boot
Tunable nfs3_max_transfer_size
Description Maximum size of an NFSv3 request
Module nfs_client_pv3
Current Value 1048576 [Default]
Value at Next Boot 1048576 [Default]
Value at Last Boot 1048576
Default Value 1048576
Constraints nfs3_max_transfer_size >= 4096
nfs3_max_transfer_size <= 2147483647
nfs3_max_transfer_size >= nfs3_max_transfer_size_cots
nfs3_max_transfer_size >= nfs3_max_transfer_size_clts
Can Change Immediately or at Next Boot
Tunable nfs3_max_transfer_size_cots
Description Maximum size of an NFSv3 request over TCP
Module nfs_client_pv3
Current Value 1048576 [Default]
Value at Next Boot 1048576 [Default]
Value at Last Boot 1048576
Default Value 1048576
Constraints nfs3_max_transfer_size_cots >= 4096
nfs3_max_transfer_size_cots <= 2147483647
nfs3_max_transfer_size_cots <= nfs3_max_transfer_size
Can Change Immediately or at Next Boot
Tunable nfs3_nra
Description Number of 32k blocks to read ahead
Module nfs_client_pv3
Current Value 4 [Default]
Value at Next Boot 4 [Default]
Value at Last Boot 4
Default Value 4
Constraints nfs3_nra >= 0
nfs3_nra <= 2147483647
Can Change Immediately or at Next Boot
Tunable nfs4_bsize
Description Client block size for future mounts
Module nfs_client_pv4
Current Value 32768 [Default]
Value at Next Boot 32768 [Default]
Value at Last Boot 32768
Default Value 32768
Constraints nfs4_bsize >= 4096
nfs4_bsize <= 2147483647
nfs4_bsize is a power of 2
Can Change Immediately or at Next Boot
Tunable nfs4_max_threads
Description Max number of active async threads for future mounts
Module nfs_client_pv4
Current Value 8 [Default]
Value at Next Boot 8 [Default]
Value at Last Boot 8
Default Value 8
Constraints nfs4_max_threads >= 2
nfs4_max_threads <= 2147483647
Can Change Immediately or at Next Boot
Tunable nfs4_max_transfer_size
Description Maximum size of an NFSv4 request
Module nfs_client_pv4
Current Value 1048576 [Default]
Value at Next Boot 1048576 [Default]
Value at Last Boot 1048576
Default Value 1048576
Constraints nfs4_max_transfer_size >= 4096
nfs4_max_transfer_size <= 2147483647
nfs4_max_transfer_size >= nfs4_max_transfer_size_cots
Can Change Immediately or at Next Boot
Tunable nfs4_max_transfer_size_cots
Description Maximum size of an NFSv4 request over TCP
Module nfs_client_pv4
Current Value 1048576 [Default]
Value at Next Boot 1048576 [Default]
Value at Last Boot 1048576
Default Value 1048576
Constraints nfs4_max_transfer_size_cots >= 4096
nfs4_max_transfer_size_cots <= 2147483647
nfs4_max_transfer_size_cots <= nfs4_max_transfer_size
Can Change Immediately or at Next Boot
Tunable nfs4_nra
Description Number of 32k blocks to read ahead
Module nfs_client_pv4
Current Value 4 [Default]
Value at Next Boot 4 [Default]
Value at Last Boot 4
Default Value 4
Constraints nfs4_nra >= 0
nfs4_nra <= 2147483647
Can Change Immediately or at Next Boot
Tunable nfs_portmon
Description Turn on server enforcement that clients use reserved ports
Module nfssrv
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints nfs_portmon >= 0
nfs_portmon <= 1
Can Change Immediately or at Next Boot
Tunable ngroups_max
Description Maximum number of supplementary group IDs per process
Module pm_ngroups_max
Current Value 20 [Default]
Value at Next Boot 20 [Default]
Value at Last Boot 20
Default Value 20
Constraints ngroups_max >= 20
ngroups_max <= 65536
Can Change Immediately or at Next Boot
Tunable ninode
Description Maximum number of HFS file system open inodes that can be in memory.
Module ufs
Current Value 8192 [Default]
Value at Next Boot Default (automatic)
Value at Last Boot 8192
Default Value 8192 (automatic)
Constraints ninode >= 14
Can Change At Next Boot Only
Tunable nkthread
Description Maximum number of threads on the system
Module pm_proc
Current Value 8416 [Default]
Value at Next Boot 8416 [Default]
Value at Last Boot 8416
Default Value 8416
Constraints nkthread >= 200
nkthread <= 4194304
nkthread >= max_thread_proc
nkthread >= nproc + 100
nkthread >= (5 * vx_era_nthreads)
Can Change Immediately or at Next Boot
Tunable nproc
Description Maximum number of processes on the system
Module pm_proc
Current Value 4200 [Default]
Value at Next Boot 4200 [Default]
Value at Last Boot 4200
Default Value 4200
Constraints nproc >= 100
nproc <= 262144
nproc >= semmnu + 4
nproc >= maxuprc + 5
nproc <= nkthread - 100
Can Change Immediately or at Next Boot
Tunable npty
Description Number of pseudo TTY device files
Module tty
Current Value 60 [Default]
Value at Next Boot 60 [Default]
Value at Last Boot 60
Default Value 60
Constraints npty >= 1
Can Change At Next Boot Only
Tunable nstrpty
Description Maximum number of Streams-based pseudo-terminals
Module ptm
Current Value 60 [Default]
Value at Next Boot 60 [Default]
Value at Last Boot 60
Default Value 60
Can Change At Next Boot Only
Tunable nstrtel
Description Number of telnet session device files
Module telm
Current Value 60 [Default]
Value at Next Boot 60 [Default]
Value at Last Boot 60
Default Value 60
Can Change At Next Boot Only
Tunable nswapdev
Description Maximum number of devices that can be enabled for swap
Module vm
Current Value 32 [Default]
Value at Next Boot 32 [Default]
Value at Last Boot 32
Default Value 32
Constraints nswapdev >= 1
nswapdev <= 1024
Can Change At Next Boot Only
Tunable nswapfs
Description Maximum number of file systems that can be enabled for swap
Module vm
Current Value 32 [Default]
Value at Next Boot 32 [Default]
Value at Last Boot 32
Default Value 32
Constraints nswapfs >= 0
nswapfs <= 1024
Can Change At Next Boot Only
Tunable numa_mode
Description NUMA mode
Module vm
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints numa_mode >= -1
numa_mode <= 1
Can Change At Next Boot Only
Tunable numa_policy
Description Policy for using NUMA features
Module vm
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints numa_policy >= 0
numa_policy <= 4
Can Change Immediately or at Next Boot
Tunable numa_sched_launch
Description Change in process default launch policy
Module pm_proc
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Constraints numa_sched_launch >= 0
numa_sched_launch <= 3
Can Change Immediately or at Next Boot
Tunable override_umask
Description Overrides umask influence while creating files
Module vfs_scalls
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints override_umask >= 0
override_umask <= 1
Can Change Immediately or at Next Boot
Tunable pa_maxssiz_32bit
Description Maximum size of the stack segment of a 32-bit PA-RISC process (bytes)
Module vm
Current Value 83648512 [Default]
Value at Next Boot 83648512 [Default]
Value at Last Boot 83648512
Default Value 83648512
Constraints pa_maxssiz_32bit >= 83648512
pa_maxssiz_32bit <= 468713472
Can Change Immediately or at Next Boot
Tunable pa_maxssiz_64bit
Description Maximum size of the stack segment of a 64-bit PA-RISC process (bytes)
Module vm
Current Value 536870912 [Default]
Value at Next Boot 536870912 [Default]
Value at Last Boot 536870912
Default Value 536870912
Constraints pa_maxssiz_64bit >= 536870912
pa_maxssiz_64bit <= 2684354560
Can Change Immediately or at Next Boot
Tunable pagezero_daemon_enabled
Description Enables background zeroing of large pages (Boolean)
Module vm
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Constraints pagezero_daemon_enabled >= 0
pagezero_daemon_enabled <= 1
Can Change Immediately or at Next Boot
Tunable patch_active_text
Description Enables patching active text semantics
Module vm_asi
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Constraints patch_active_text >= 0
patch_active_text <= 1
Can Change Immediately or at Next Boot
Tunable pci_eh_enable
Description Enable/Disable PCI Error Recovery
Module lba
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Constraints pci_eh_enable >= 0
pci_eh_enable <= 1
Can Change At Next Boot Only
Tunable pci_error_tolerance_time
Description Time interval in minutes between PCI Errors
Module eh_psm
Current Value 1440 [Default]
Value at Next Boot 1440 [Default]
Value at Last Boot 1440
Default Value 1440
Can Change Immediately or at Next Boot
Tunable process_id_max
Description Maximum value for newer process IDs
Module pm_pid
Current Value 30000 [Default]
Value at Next Boot Default (automatic)
Value at Last Boot 30000
Default Value 30000 (automatic)
Constraints process_id_max <= 1073741823
process_id_max >= process_id_min + 512
Can Change Automatic Tuning Enabled
Tunable process_id_min
Description Minimum value for newer process IDs
Module pm_pid
Current Value 0 [Default]
Value at Next Boot Default (automatic)
Value at Last Boot 0
Default Value 0 (automatic)
Constraints process_id_min >= 0
process_id_min <= process_id_max - 512
Can Change Automatic Tuning Enabled
Tunable pwr_idle_ctl
Description Power management on idle processors
Module pm_power
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints pwr_idle_ctl >= 0
pwr_idle_ctl <= 5
Can Change Immediately or at Next Boot
Tunable remote_nfs_swap
Description Enables swapping across NFS (Boolean)
Module vm
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints remote_nfs_swap >= 0
remote_nfs_swap <= 1
Can Change At Next Boot Only
Tunable rng_bitvals
Description Bits that contribute to entropy
Module rng
Current Value 9876543210 [Default]
Value at Next Boot 9876543210 [Default]
Value at Last Boot 9876543210
Default Value 9876543210
Constraints rng_bitvals >= 0
rng_bitvals <= 9876543210
Can Change At Next Boot Only
Tunable rng_sleeptime
Description Hundredths of seconds to pause when entropy is low
Module rng
Current Value 2 [Default]
Value at Next Boot 2 [Default]
Value at Last Boot 2
Default Value 2
Constraints rng_sleeptime >= 2
Can Change At Next Boot Only
Tunable rtsched_numpri
Description Number of POSIX.1b realtime priorities
Module pm_sched
Current Value 32 [Default]
Value at Next Boot 32 [Default]
Value at Last Boot 32
Default Value 32
Can Change At Next Boot Only
Tunable rusage_hires_enable
Description Enables finer resolution rusage
Module pm_acct
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints rusage_hires_enable >= 0
rusage_hires_enable <= 1
Can Change Immediately or at Next Boot
Tunable sched_idle_ht_steal_policy
Description Enables idling secondary hyper-threading to steal threads across cores
Module pm_sched
Current Value 0 [Default]
Value at Next Boot Default (automatic)
Value at Last Boot 0
Default Value 0 (automatic)
Constraints sched_idle_ht_steal_policy >= 0
sched_idle_ht_steal_policy <= 1
Can Change Automatic Tuning Enabled
Tunable sched_thread_affinity
Description Thread affinity (1 = lowest affinity; 10 = highest affinity)
Module pm_sched
Current Value 6 [Default]
Value at Next Boot 6 [Default]
Value at Last Boot 6
Default Value 6
Constraints sched_thread_affinity >= 1
sched_thread_affinity <= 10
Can Change Immediately or at Next Boot
Tunable scroll_lines
Description Number of saved off-screen lines on the graphics console (ITE)
Module ite
Current Value 100 [Default]
Value at Next Boot 100 [Default]
Value at Last Boot 100
Default Value 100
Constraints scroll_lines >= 60
scroll_lines <= 999
Can Change At Next Boot Only
Tunable secure_sid_scripts
Description Ignores setuid/setgid bits on shell scripts (Boolean)
Module vm
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Constraints secure_sid_scripts >= 0
secure_sid_scripts <= 1
Can Change Immediately or at Next Boot
Tunable semaem
Description Maximum total undo value on a semaphore
Module pm_usync
Current Value 16384 [Default]
Value at Next Boot 16384 [Default]
Value at Last Boot 16384
Default Value 16384
Constraints semaem >= 0
semaem <= 32767
semaem <= semvmx
Can Change At Next Boot Only
Tunable semmni
Description Maximum number of semaphore sets on the system
Module pm_usync
Current Value 2048 [Default]
Value at Next Boot 2048 [Default]
Value at Last Boot 2048
Default Value 2048
Constraints semmni >= 2
semmni <= 32767
semmni <= semmns
Can Change At Next Boot Only
Tunable semmns
Description Maximum number of semaphores
Module pm_usync
Current Value 4096 [Default]
Value at Next Boot 4096 [Default]
Value at Last Boot 4096
Default Value 4096
Constraints semmns >= 2
semmns <= 335534080
semmns >= semmni
semmns >= semume
Can Change At Next Boot Only
Tunable semmnu
Description Maximum number of processes that can have undo operations pending on a semaphore
Module pm_usync
Current Value 256 [Default]
Value at Next Boot 256 [Default]
Value at Last Boot 256
Default Value 256
Constraints semmnu >= 1
semmnu <= nproc - 4
Can Change At Next Boot Only
Tunable semmsl
Description Maximum number of semaphores in a set
Module pm_usync
Current Value 2048 [Default]
Value at Next Boot 2048 [Default]
Value at Last Boot 2048
Default Value 2048
Constraints semmsl >= 1
semmsl <= 10240
Can Change Immediately or at Next Boot
Tunable semume
Description Maximum number of semaphores on which a process can have undo operations pending
Module pm_usync
Current Value 100 [Default]
Value at Next Boot 100 [Default]
Value at Last Boot 100
Default Value 100
Constraints semume >= 1
semume <= semmns
Can Change At Next Boot Only
Tunable semvmx
Description Maximum value of a semaphore
Module pm_usync
Current Value 32767 [Default]
Value at Next Boot 32767 [Default]
Value at Last Boot 32767
Default Value 32767
Constraints semvmx >= 1
semvmx <= 65535
semvmx >= semaem
Can Change At Next Boot Only
Tunable shlib_debug_enable
Description Enables online debugging of shared libraries
Module vm_vasm_shlib
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints shlib_debug_enable >= 0
shlib_debug_enable <= 1
Can Change Immediately or at Next Boot
Tunable shmmax
Description Maximum size of a shared memory segment (bytes)
Module vm_asi
Current Value 1073741824 [Default]
Value at Next Boot 1073741824 [Default]
Value at Last Boot 1073741824
Default Value 1073741824
Constraints shmmax >= 2048
shmmax <= 4398046511104
Can Change Immediately or at Next Boot
Tunable shmmni
Description Maximum number of shared memory segments on the system
Module vm_asi
Current Value 400 [Default]
Value at Next Boot 400 [Default]
Value at Last Boot 400
Default Value 400
Constraints shmmni >= 3
shmmni <= 32768
shmmni >= shmseg
Can Change Immediately or at Next Boot
Tunable shmseg
Description Maximum number of shared memory segments attached to a process
Module vm_asi
Current Value 300 [Default]
Value at Next Boot 300 [Default]
Value at Last Boot 300
Default Value 300
Constraints shmseg >= 1
shmseg <= shmmni
Can Change Immediately or at Next Boot
Tunable stack_guard_pgsize
Description Variable stack guard page size
Module vm_vasm
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Constraints stack_guard_pgsize >= 0
stack_guard_pgsize <= 4
Can Change At Next Boot Only
Tunable streampipes
Description Forces all pipes to be Streams-based pipes (Boolean)
Module hpstreams
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Can Change At Next Boot Only
Tunable swchunk
Description Swap chunk size (kBytes)
Module vm
Current Value 2048 [Default]
Value at Next Boot 2048 [Default]
Value at Last Boot 2048
Default Value 2048
Constraints swchunk >= 2048
swchunk <= 65536
Can Change At Next Boot Only
Tunable sysv_hash_locks
Description Number of semaphore locks
Module pm_usync
Current Value 128 [Default]
Value at Next Boot 128 [Default]
Value at Last Boot 128
Default Value 128
Can Change At Next Boot Only
Tunable tcphashsz
Description Size of the TCP hash table
Module inet
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints tcphashsz >= 0
tcphashsz <= 65536
Can Change At Next Boot Only
Tunable timeslice
Description Scheduling interval (10ms units; -1 = do not timeslice)
Module pm_sched
Current Value 10 [Default]
Value at Next Boot 10 [Default]
Value at Last Boot 10
Default Value 10
Constraints timeslice >= -1
timeslice <= 2147483647
Can Change At Next Boot Only
Tunable timezone
Description Timezone (minutes west of UTC)
Module pm_clock
Current Value 420 [Default]
Value at Next Boot 420 [Default]
Value at Last Boot 420
Default Value 420
Constraints timezone >= -720
timezone <= 720
Can Change At Next Boot Only
Tunable ttrace_scope
Description Controls process capability to make itself un-traceable
Module pm_ttrc
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints ttrace_scope >= 0
ttrace_scope <= 1
Can Change Immediately or at Next Boot
Tunable uname_eoverflow
Description Causes non-expanded uname(2) to return EOVERFLOW on field overflow.
Module sysconfig
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Constraints uname_eoverflow >= 0
uname_eoverflow <= 1
Can Change Immediately or at Next Boot
Tunable vnode_cd_hash_locks
Description Number of locks for vnode clean/dirty pool
Module fs
Current Value 128 [Default]
Value at Next Boot 128 [Default]
Value at Last Boot 128
Default Value 128
Can Change At Next Boot Only
Tunable vnode_hash_locks
Description Number of vnode locks
Module fs
Current Value 128 [Default]
Value at Next Boot 128 [Default]
Value at Last Boot 128
Default Value 128
Can Change At Next Boot Only
Tunable vol_checkpt_default
Description Size of VxVM checkpoints (kBytes)
Module vol
Current Value 10240 [Default]
Value at Next Boot 10240 [Default]
Value at Last Boot 10240
Default Value 10240
Can Change At Next Boot Only
Tunable vol_dcm_replay_size
Description Data Change Map replay size (bytes)
Module vol
Current Value 262144 [Default]
Value at Next Boot 262144 [Default]
Value at Last Boot 262144
Default Value 262144
Can Change At Next Boot Only
Tunable vol_default_iodelay
Description Time to pause between I/O requests from VxVM utilities (10ms units)
Module vol
Current Value 50 [Default]
Value at Next Boot 50 [Default]
Value at Last Boot 50
Default Value 50
Can Change At Next Boot Only
Tunable vol_fmr_logsz
Description Maximum size of bitmap Fast Mirror Resync uses to track changed blocks (KBytes)
Module vol
Current Value 4 [Default]
Value at Next Boot 4 [Default]
Value at Last Boot 4
Default Value 4
Can Change At Next Boot Only
Tunable vol_max_bchain
Description Maximum count of buffers to chain for I/O
Module vol
Current Value 32 [Default]
Value at Next Boot 32 [Default]
Value at Last Boot 32
Default Value 32
Can Change At Next Boot Only
Tunable vol_max_nconfigs
Description Maximum number of vxdb config copies
Module vol
Current Value 20 [Default]
Value at Next Boot 20 [Default]
Value at Last Boot 20
Default Value 20
Can Change At Next Boot Only
Tunable vol_max_nlogs
Description Maximum number of vxkb log copies
Module vol
Current Value 20 [Default]
Value at Next Boot 20 [Default]
Value at Last Boot 20
Default Value 20
Can Change At Next Boot Only
Tunable vol_max_nmpool_sz
Description Maximum name pool size (bytes)
Module vol
Current Value 4194304 [Default]
Value at Next Boot 4194304 [Default]
Value at Last Boot 4194304
Default Value 4194304
Constraints vol_max_nmpool_sz >= 0
vol_max_nmpool_sz <= 4294967295
Can Change Immediately or at Next Boot
Tunable vol_max_prm_dgs
Description Maximum number of Process Resource Manager disk groups (units)
Module vol
Current Value 1024 [Default]
Value at Next Boot 1024 [Default]
Value at Last Boot 1024
Default Value 1024
Can Change At Next Boot Only
Tunable vol_max_rdback_sz
Description Storage Record readback pool maximum (bytes)
Module vol
Current Value 4194304 [Default]
Value at Next Boot 4194304 [Default]
Value at Last Boot 4194304
Default Value 4194304
Constraints vol_max_rdback_sz >= 0
vol_max_rdback_sz <= 4294967295
Can Change Immediately or at Next Boot
Tunable vol_max_vol
Description Maximum number of VxVM volumes
Module vol
Current Value 8388608 [Default]
Value at Next Boot 8388608 [Default]
Value at Last Boot 8388608
Default Value 8388608
Can Change At Next Boot Only
Tunable vol_max_wrspool_sz
Description Maximum memory used in clustered version of VERITAS Volume Replicator
Module vol
Current Value 4194304 [Default]
Value at Next Boot 4194304 [Default]
Value at Last Boot 4194304
Default Value 4194304
Constraints vol_max_wrspool_sz >= 0
vol_max_wrspool_sz <= 4294967295
Can Change Immediately or at Next Boot
Tunable vol_maxio
Description Maximum size of logical VxVM I/O operations (kBytes)
Module vol
Current Value 1024 [Default]
Value at Next Boot 1024 [Default]
Value at Last Boot 1024
Default Value 1024
Can Change At Next Boot Only
Tunable vol_maxioctl
Description Maximum size of data passed into the VxVM ioctl calls (bytes)
Module vol
Current Value 32768 [Default]
Value at Next Boot 32768 [Default]
Value at Last Boot 32768
Default Value 32768
Can Change At Next Boot Only
Tunable vol_maxkiocount
Description Maximum number of I/Os that can be performed by VxVM in parallel
Module vol
Current Value 2048 [Default]
Value at Next Boot 2048 [Default]
Value at Last Boot 2048
Default Value 2048
Can Change At Next Boot Only
Tunable vol_maxparallelio
Description Number of I/O operations vxconfigd can request at one time
Module vol
Current Value 256 [Default]
Value at Next Boot 256 [Default]
Value at Last Boot 256
Default Value 256
Can Change At Next Boot Only
Tunable vol_maxspecialio
Description Maximum size of a VxVM I/O operation issued by an ioctl call (kBytes)
Module vol
Current Value 1024 [Default]
Value at Next Boot 1024 [Default]
Value at Last Boot 1024
Default Value 1024
Can Change At Next Boot Only
Tunable vol_maxstablebufsize
Description Maximum size of copy buffer
Module vol
Current Value 256 [Default]
Value at Next Boot 256 [Default]
Value at Last Boot 256
Default Value 256
Can Change At Next Boot Only
Tunable vol_min_lowmem_sz
Description Low water mark for memory (bytes)
Module vol
Current Value 532480 [Default]
Value at Next Boot 532480 [Default]
Value at Last Boot 532480
Default Value 532480
Constraints vol_min_lowmem_sz >= 0
vol_min_lowmem_sz <= 4294967295
Can Change Immediately or at Next Boot
Tunable vol_mvr_maxround
Description Maximum distance between read requests served by the same mirror (kBytes)
Module vol
Current Value 256 [Default]
Value at Next Boot 256 [Default]
Value at Last Boot 256
Default Value 256
Can Change At Next Boot Only
Tunable vol_nm_hb_timeout
Description VERITAS Volume Replicator Heartbeat timeout value (ticks)
Module vol
Current Value 10 [Default]
Value at Next Boot 10 [Default]
Value at Last Boot 10
Default Value 10
Can Change At Next Boot Only
Tunable vol_rootdev_is_vol
Description Root device is VxVM volume
Module vol
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Can Change At Next Boot Only
Tunable vol_rvio_maxpool_sz
Description Maximum memory requested by VERITAS Volume Replicator (bytes)
Module vol
Current Value 4194304 [Default]
Value at Next Boot 4194304 [Default]
Value at Last Boot 4194304
Default Value 4194304
Constraints vol_rvio_maxpool_sz >= 0
vol_rvio_maxpool_sz <= 4294967295
Can Change Immediately or at Next Boot
Tunable vol_subdisk_num
Description Maximum number of subdisks attached to a single VxVM plex
Module vol
Current Value 4096 [Default]
Value at Next Boot 4096 [Default]
Value at Last Boot 4096
Default Value 4096
Can Change At Next Boot Only
Tunable vol_swapdev_is_vol
Description SWAP device is VxVM volume
Module vol
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Can Change At Next Boot Only
Tunable vol_vvr_transport
Description Transport type for VERITAS Volume Replicator (1 is UDP, 2 is TCP)
Module vol
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Can Change At Next Boot Only
Tunable vol_vvr_use_nat
Description Use native address translation for VERITAS Volume Replicator (boolean)
Module vol
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Can Change At Next Boot Only
Tunable volcvm_cluster_size
Description Maximum size of VxVM Cluster
Module vol
Current Value 16 [Default]
Value at Next Boot 16 [Default]
Value at Last Boot 16
Default Value 16
Can Change At Next Boot Only
Tunable volcvm_smartsync
Description Disable SmartSync Recovery Accelerator on shared disk groups
Module vol
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Can Change At Next Boot Only
Tunable voldrl_max_drtregs
Description Maximum number of dirty VxVM regions
Module vol
Current Value 2048 [Default]
Value at Next Boot 2048 [Default]
Value at Last Boot 2048
Default Value 2048
Can Change At Next Boot Only
Tunable voldrl_min_regionsz
Description Minimum size of a VxVM Dirty Region Logging (DRL) region (kBytes)
Module vol
Current Value 512 [Default]
Value at Next Boot 512 [Default]
Value at Last Boot 512
Default Value 512
Can Change At Next Boot Only
Tunable voliomem_chunk_size
Description Size of VxVM memory allocation requests (bytes)
Module vol
Current Value 65536 [Default]
Value at Next Boot 65536 [Default]
Value at Last Boot 65536
Default Value 65536
Can Change At Next Boot Only
Tunable voliomem_maxpool_sz
Description Maximum amount of memory used by VxVM (bytes)
Module vol
Current Value 4194304 [Default]
Value at Next Boot 4194304 [Default]
Value at Last Boot 4194304
Default Value 4194304
Constraints voliomem_maxpool_sz >= 0
voliomem_maxpool_sz <= 4294967295
Can Change At Next Boot Only
Tunable voliot_errbuf_dflt
Description Size of a VxVM error trace buffer (bytes)
Module vol
Current Value 16384 [Default]
Value at Next Boot 16384 [Default]
Value at Last Boot 16384
Default Value 16384
Can Change At Next Boot Only
Tunable voliot_iobuf_default
Description Default size of a VxVM I/O trace buffer (bytes)
Module vol
Current Value 8192 [Default]
Value at Next Boot 8192 [Default]
Value at Last Boot 8192
Default Value 8192
Can Change At Next Boot Only
Tunable voliot_iobuf_limit
Description Maximum total size of all VxVM I/O trace buffers (bytes)
Module vol
Current Value 131072 [Default]
Value at Next Boot 131072 [Default]
Value at Last Boot 131072
Default Value 131072
Can Change At Next Boot Only
Tunable voliot_iobuf_max
Description Maximum size of a VxVM I/O trace buffer (bytes)
Module vol
Current Value 65536 [Default]
Value at Next Boot 65536 [Default]
Value at Last Boot 65536
Default Value 65536
Can Change At Next Boot Only
Tunable voliot_max_open
Description Maximum number of VxVM trace channels available for vxtrace commands
Module vol
Current Value 32 [Default]
Value at Next Boot 32 [Default]
Value at Last Boot 32
Default Value 32
Can Change At Next Boot Only
Tunable volpagemod_max_memsz
Description Maximum paging module memory used by Instant Snapshots(Kbytes)
Module vol
Current Value 6144 [Default]
Value at Next Boot 6144 [Default]
Value at Last Boot 6144
Default Value 6144
Constraints volpagemod_max_memsz >= 0
volpagemod_max_memsz <= 4294967295
Can Change Immediately or at Next Boot
Tunable volraid_rsrtransmax
Description Maximum number of VxVM RAID-5 transient reconstruct operations in parallel
Module vol
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 1
Default Value 1
Can Change At Next Boot Only
Tunable vpar_guest_ogm_enable
Description Enables vpfn changes to support online vPar guest migration.
Module vm
Current Value 1 [Default]
Value at Next Boot 1 [Default]
Value at Last Boot 0
Default Value 1
Constraints vpar_guest_ogm_enable >= 0
vpar_guest_ogm_enable <= 1
Can Change At Next Boot Only
Tunable vps_ceiling
Description Maximum system-selected page size (kBytes)
Module vm
Current Value 16 [Default]
Value at Next Boot 16 [Default]
Value at Last Boot 16
Default Value 16
Constraints vps_ceiling >= 4
vps_ceiling <= 4194304
Can Change Immediately or at Next Boot
Tunable vps_chatr_ceiling
Description Maximum chatr-selected page size (kBytes)
Module vm
Current Value 1048576 [Default]
Value at Next Boot 1048576 [Default]
Value at Last Boot 1048576
Default Value 1048576
Constraints vps_chatr_ceiling >= 4
vps_chatr_ceiling <= 4194304
Can Change Immediately or at Next Boot
Tunable vps_pagesize
Description Default user page size (kBytes)
Module vm
Current Value 16 [Default]
Value at Next Boot 16 [Default]
Value at Last Boot 16
Default Value 16
Constraints vps_pagesize >= 4
vps_pagesize <= 4194304
Can Change Immediately or at Next Boot
Tunable vx_era_nthreads
Description Maximum number of threads VxFS will detect read_ahead patterns on
Module vxfs
Current Value 5 [Default]
Value at Next Boot 5 [Default]
Value at Last Boot 5
Default Value 5
Constraints vx_era_nthreads >= 1
(5 * vx_era_nthreads) <= nkthread
Can Change At Next Boot Only
Tunable vx_maxlink
Description Maximum number of links to a VxFS file
Module vxfs
Current Value 32767 [Default]
Value at Next Boot 32767 [Default]
Value at Last Boot 32767
Default Value 32767
Constraints vx_maxlink >= 32767
vx_maxlink <= 65534
Can Change At Next Boot Only
Tunable vx_ninode
Description Number of entries in the VxFS inode table
Module vxfs
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints vx_ninode >= 0
Can Change Immediately or at Next Boot
Tunable vxfs_bc_bufhwm
Description VxFS metadata buffer cache high water mark
Module vxfs
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints vxfs_bc_bufhwm == 0 or vxfs_bc_bufhwm >= 6144
Can Change Immediately or at Next Boot
Tunable vxfs_ifree_timelag
Description VxFS Free Inode minimum existence time
Module vxfs
Current Value 0 [Default]
Value at Next Boot 0 [Default]
Value at Last Boot 0
Default Value 0
Constraints vxfs_ifree_timelag >= -1
Can Change Immediately or at Next Boot
Tunable vxtask_max_monitors
Description Maximum number of monitors (units)
Module vol
Current Value 32 [Default]
Value at Next Boot 32 [Default]
Value at Last Boot 32
Default Value 32
Can Change At Next Boot Only
Page completed on: Mon Mar 29 10:42:52 EDT 2021