proc_vmstat(5) - Linux manual page (original) (raw)
procvmstat(5) File Formats Manual procvmstat(5)
NAME top
/proc/vmstat - virtual memory statisticsDESCRIPTION top
_/proc/vmstat_ (since Linux 2.6.0)
This file displays various virtual memory statistics. Each
line of this file contains a single name-value pair,
delimited by white space. Some lines are present only if
the kernel was configured with suitable options. (In some
cases, the options required for particular files have
changed across kernel versions, so they are not listed
here. Details can be found by consulting the kernel source
code.) The following fields may be present:
_nrfreepages_ (since Linux 2.6.31)
_nrallocbatch_ (since Linux 3.12)
_nrinactiveanon_ (since Linux 2.6.28)
_nractiveanon_ (since Linux 2.6.28)
_nrinactivefile_ (since Linux 2.6.28)
_nractivefile_ (since Linux 2.6.28)
_nrunevictable_ (since Linux 2.6.28)
_nrmlock_ (since Linux 2.6.28)
_nranonpages_ (since Linux 2.6.18)
_nrmapped_ (since Linux 2.6.0)
_nrfilepages_ (since Linux 2.6.18)
_nrdirty_ (since Linux 2.6.0)
_nrwriteback_ (since Linux 2.6.0)
_nrslabreclaimable_ (since Linux 2.6.19)
_nrslabunreclaimable_ (since Linux 2.6.19)
_nrpagetablepages_ (since Linux 2.6.0)
_nrkernelstack_ (since Linux 2.6.32)
Amount of memory allocated to kernel stacks.
_nrunstable_ (since Linux 2.6.0)
_nrbounce_ (since Linux 2.6.12)
_nrvmscanwrite_ (since Linux 2.6.19)
_nrvmscanimmediatereclaim_ (since Linux 3.2)
_nrwritebacktemp_ (since Linux 2.6.26)
_nrisolatedanon_ (since Linux 2.6.32)
_nrisolatedfile_ (since Linux 2.6.32)
_nrshmem_ (since Linux 2.6.32)
Pages used by shmem and [tmpfs(5)](../man5/tmpfs.5.html).
_nrdirtied_ (since Linux 2.6.37)
_nrwritten_ (since Linux 2.6.37)
_nrpagesscanned_ (since Linux 3.17)
_numahit_ (since Linux 2.6.18)
_numamiss_ (since Linux 2.6.18)
_numaforeign_ (since Linux 2.6.18)
_numainterleave_ (since Linux 2.6.18)
_numalocal_ (since Linux 2.6.18)
_numaother_ (since Linux 2.6.18)
_workingsetrefault_ (since Linux 3.15)
_workingsetactivate_ (since Linux 3.15)
_workingsetnodereclaim_ (since Linux 3.15)
_nranontransparenthugepages_ (since Linux 2.6.38)
_nrfreecma_ (since Linux 3.7)
Number of free CMA (Contiguous Memory Allocator)
pages.
_nrdirtythreshold_ (since Linux 2.6.37)
_nrdirtybackgroundthreshold_ (since Linux 2.6.37)
_pgpgin_ (since Linux 2.6.0)
_pgpgout_ (since Linux 2.6.0)
_pswpin_ (since Linux 2.6.0)
_pswpout_ (since Linux 2.6.0)
_pgallocdma_ (since Linux 2.6.5)
_pgallocdma32_ (since Linux 2.6.16)
_pgallocnormal_ (since Linux 2.6.5)
_pgallochigh_ (since Linux 2.6.5)
_pgallocmovable_ (since Linux 2.6.23)
_pgfree_ (since Linux 2.6.0)
_pgactivate_ (since Linux 2.6.0)
_pgdeactivate_ (since Linux 2.6.0)
_pgfault_ (since Linux 2.6.0)
_pgmajfault_ (since Linux 2.6.0)
_pgrefilldma_ (since Linux 2.6.5)
_pgrefilldma32_ (since Linux 2.6.16)
_pgrefillnormal_ (since Linux 2.6.5)
_pgrefillhigh_ (since Linux 2.6.5)
_pgrefillmovable_ (since Linux 2.6.23)
_pgstealkswapddma_ (since Linux 3.4)
_pgstealkswapddma32_ (since Linux 3.4)
_pgstealkswapdnormal_ (since Linux 3.4)
_pgstealkswapdhigh_ (since Linux 3.4)
_pgstealkswapdmovable_ (since Linux 3.4)
_pgstealdirectdma_
_pgstealdirectdma32_ (since Linux 3.4)
_pgstealdirectnormal_ (since Linux 3.4)
_pgstealdirecthigh_ (since Linux 3.4)
_pgstealdirectmovable_ (since Linux 2.6.23)
_pgscankswapddma_
_pgscankswapddma32_ (since Linux 2.6.16)
_pgscankswapdnormal_ (since Linux 2.6.5)
_pgscankswapdhigh_
_pgscankswapdmovable_ (since Linux 2.6.23)
_pgscandirectdma_
_pgscandirectdma32_ (since Linux 2.6.16)
_pgscandirectnormal_
_pgscandirecthigh_
_pgscandirectmovable_ (since Linux 2.6.23)
_pgscandirectthrottle_ (since Linux 3.6)
_zonereclaimfailed_ (since linux 2.6.31)
_pginodesteal_ (since linux 2.6.0)
_slabsscanned_ (since linux 2.6.5)
_kswapdinodesteal_ (since linux 2.6.0)
_kswapdlowwmarkhitquickly_ (since Linux 2.6.33)
_kswapdhighwmarkhitquickly_ (since Linux 2.6.33)
_pageoutrun_ (since Linux 2.6.0)
_allocstall_ (since Linux 2.6.0)
_pgrotated_ (since Linux 2.6.0)
_droppagecache_ (since Linux 3.15)
_dropslab_ (since Linux 3.15)
_numapteupdates_ (since Linux 3.8)
_numahugepteupdates_ (since Linux 3.13)
_numahintfaults_ (since Linux 3.8)
_numahintfaultslocal_ (since Linux 3.8)
_numapagesmigrated_ (since Linux 3.8)
_pgmigratesuccess_ (since Linux 3.8)
_pgmigratefail_ (since Linux 3.8)
_compactmigratescanned_ (since Linux 3.8)
_compactfreescanned_ (since Linux 3.8)
_compactisolated_ (since Linux 3.8)
_compactstall_ (since Linux 2.6.35)
See the kernel source file
_Documentation/admin-guide/mm/transhuge.rst_.
_compactfail_ (since Linux 2.6.35)
See the kernel source file
_Documentation/admin-guide/mm/transhuge.rst_.
_compactsuccess_ (since Linux 2.6.35)
See the kernel source file
_Documentation/admin-guide/mm/transhuge.rst_.
_htlbbuddyallocsuccess_ (since Linux 2.6.26)
_htlbbuddyallocfail_ (since Linux 2.6.26)
_unevictablepgsculled_ (since Linux 2.6.28)
_unevictablepgsscanned_ (since Linux 2.6.28)
_unevictablepgsrescued_ (since Linux 2.6.28)
_unevictablepgsmlocked_ (since Linux 2.6.28)
_unevictablepgsmunlocked_ (since Linux 2.6.28)
_unevictablepgscleared_ (since Linux 2.6.28)
_unevictablepgsstranded_ (since Linux 2.6.28)
_thpfaultalloc_ (since Linux 2.6.39)
See the kernel source file
_Documentation/admin-guide/mm/transhuge.rst_.
_thpfaultfallback_ (since Linux 2.6.39)
See the kernel source file
_Documentation/admin-guide/mm/transhuge.rst_.
_thpcollapsealloc_ (since Linux 2.6.39)
See the kernel source file
_Documentation/admin-guide/mm/transhuge.rst_.
_thpcollapseallocfailed_ (since Linux 2.6.39)
See the kernel source file
_Documentation/admin-guide/mm/transhuge.rst_.
_thpsplit_ (since Linux 2.6.39)
See the kernel source file
_Documentation/admin-guide/mm/transhuge.rst_.
_thpzeropagealloc_ (since Linux 3.8)
See the kernel source file
_Documentation/admin-guide/mm/transhuge.rst_.
_thpzeropageallocfailed_ (since Linux 3.8)
See the kernel source file
_Documentation/admin-guide/mm/transhuge.rst_.
_ballooninflate_ (since Linux 3.18)
_balloondeflate_ (since Linux 3.18)
_balloonmigrate_ (since Linux 3.18)
_nrtlbremoteflush_ (since Linux 3.12)
_nrtlbremoteflushreceived_ (since Linux 3.12)
_nrtlblocalflushall_ (since Linux 3.12)
_nrtlblocalflushone_ (since Linux 3.12)
_vmacachefindcalls_ (since Linux 3.16)
_vmacachefindhits_ (since Linux 3.16)
_vmacachefullflushes_ (since Linux 3.19)SEE ALSO top
[proc(5)](../man5/proc.5.html)COLOPHON top
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man-pages@man7.orgLinux man-pages 6.10 2024-05-02 procvmstat(5)