The kernel_vmstat plugin gathers virtual memory statistics by reading /proc/vmstat. For a full list of available fields see the /proc/vmstat section of the proc man page. For a better idea of what each field represents, see the vmstat man page.
/proc/vmstat
kernel/system statistics. Common entries include (from http://www.linuxinsight.com/proc_vmstat.html):
Number of pages that are dirty, under writeback or unstable:
nr_dirty 1550
nr_writeback 0
nr_unstable 0
Number of pages allocated to page tables, mapped by files or allocated by the kernel slab allocator:
nr_page_table_pages 699
nr_mapped 139596
nr_slab 42723
Number of pageins and pageouts (since the last boot):
pgpgin 33754195
pgpgout 38985992
Number of swapins and swapouts (since the last boot):
pswpin 2473
pswpout 2995
Number of page allocations per zone (since the last boot):
pgalloc_high 0
pgalloc_normal 110123213
pgalloc_dma32 0
pgalloc_dma 415219
Number of page frees, activations and deactivations (since the last boot):
pgfree 110549163
pgactivate 4509729
pgdeactivate 2136215
Number of minor and major page faults (since the last boot):
pgfault 80663722
pgmajfault 49813
Number of page refills (per zone, since the last boot):
pgrefill_high 0
pgrefill_normal 5817500
pgrefill_dma32 0
pgrefill_dma 149176
Number of page steals (per zone, since the last boot):
pgsteal_high 0
pgsteal_normal 10421346
pgsteal_dma32 0
pgsteal_dma 142196
Number of pages scanned by the kswapd daemon (per zone, since the last boot):
pgscan_kswapd_high 0
pgscan_kswapd_normal 10491424
pgscan_kswapd_dma32 0
pgscan_kswapd_dma 156130
Number of pages reclaimed directly (per zone, since the last boot):
pgscan_direct_high 0
pgscan_direct_normal 11904
pgscan_direct_dma32 0
pgscan_direct_dma 225
Number of pages reclaimed via inode freeing (since the last boot):
pginodesteal 11
Number of slab objects scanned (since the last boot):
slabs_scanned 8926976
Number of pages reclaimed by kswapd (since the last boot):
kswapd_steal 10551674
Number of pages reclaimed by kswapd via inode freeing (since the last boot):
kswapd_inodesteal 338730
Number of kswapd's calls to page reclaim (since the last boot):
pageoutrun 181908
Number of direct reclaim calls (since the last boot):
allocstall 160
Miscellaneous statistics:
pgrotated 3781
nr_bounce 0
# Get kernel statistics from /proc/vmstat
[[inputs.kernel_vmstat]]
# no configuration- kernel_vmstat
- nr_free_pages (integer,
nr_free_pages) - nr_inactive_anon (integer,
nr_inactive_anon) - nr_active_anon (integer,
nr_active_anon) - nr_inactive_file (integer,
nr_inactive_file) - nr_active_file (integer,
nr_active_file) - nr_unevictable (integer,
nr_unevictable) - nr_mlock (integer,
nr_mlock) - nr_anon_pages (integer,
nr_anon_pages) - nr_mapped (integer,
nr_mapped) - nr_file_pages (integer,
nr_file_pages) - nr_dirty (integer,
nr_dirty) - nr_writeback (integer,
nr_writeback) - nr_slab_reclaimable (integer,
nr_slab_reclaimable) - nr_slab_unreclaimable (integer,
nr_slab_unreclaimable) - nr_page_table_pages (integer,
nr_page_table_pages) - nr_kernel_stack (integer,
nr_kernel_stack) - nr_unstable (integer,
nr_unstable) - nr_bounce (integer,
nr_bounce) - nr_vmscan_write (integer,
nr_vmscan_write) - nr_writeback_temp (integer,
nr_writeback_temp) - nr_isolated_anon (integer,
nr_isolated_anon) - nr_isolated_file (integer,
nr_isolated_file) - nr_shmem (integer,
nr_shmem) - numa_hit (integer,
numa_hit) - numa_miss (integer,
numa_miss) - numa_foreign (integer,
numa_foreign) - numa_interleave (integer,
numa_interleave) - numa_local (integer,
numa_local) - numa_other (integer,
numa_other) - nr_anon_transparent_hugepages (integer,
nr_anon_transparent_hugepages) - pgpgin (integer,
pgpgin) - pgpgout (integer,
pgpgout) - pswpin (integer,
pswpin) - pswpout (integer,
pswpout) - pgalloc_dma (integer,
pgalloc_dma) - pgalloc_dma32 (integer,
pgalloc_dma32) - pgalloc_normal (integer,
pgalloc_normal) - pgalloc_movable (integer,
pgalloc_movable) - pgfree (integer,
pgfree) - pgactivate (integer,
pgactivate) - pgdeactivate (integer,
pgdeactivate) - pgfault (integer,
pgfault) - pgmajfault (integer,
pgmajfault) - pgrefill_dma (integer,
pgrefill_dma) - pgrefill_dma32 (integer,
pgrefill_dma32) - pgrefill_normal (integer,
pgrefill_normal) - pgrefill_movable (integer,
pgrefill_movable) - pgsteal_dma (integer,
pgsteal_dma) - pgsteal_dma32 (integer,
pgsteal_dma32) - pgsteal_normal (integer,
pgsteal_normal) - pgsteal_movable (integer,
pgsteal_movable) - pgscan_kswapd_dma (integer,
pgscan_kswapd_dma) - pgscan_kswapd_dma32 (integer,
pgscan_kswapd_dma32) - pgscan_kswapd_normal (integer,
pgscan_kswapd_normal) - pgscan_kswapd_movable (integer,
pgscan_kswapd_movable) - pgscan_direct_dma (integer,
pgscan_direct_dma) - pgscan_direct_dma32 (integer,
pgscan_direct_dma32) - pgscan_direct_normal (integer,
pgscan_direct_normal) - pgscan_direct_movable (integer,
pgscan_direct_movable) - zone_reclaim_failed (integer,
zone_reclaim_failed) - pginodesteal (integer,
pginodesteal) - slabs_scanned (integer,
slabs_scanned) - kswapd_steal (integer,
kswapd_steal) - kswapd_inodesteal (integer,
kswapd_inodesteal) - kswapd_low_wmark_hit_quickly (integer,
kswapd_low_wmark_hit_quickly) - kswapd_high_wmark_hit_quickly (integer,
kswapd_high_wmark_hit_quickly) - kswapd_skip_congestion_wait (integer,
kswapd_skip_congestion_wait) - pageoutrun (integer,
pageoutrun) - allocstall (integer,
allocstall) - pgrotated (integer,
pgrotated) - compact_blocks_moved (integer,
compact_blocks_moved) - compact_pages_moved (integer,
compact_pages_moved) - compact_pagemigrate_failed (integer,
compact_pagemigrate_failed) - compact_stall (integer,
compact_stall) - compact_fail (integer,
compact_fail) - compact_success (integer,
compact_success) - htlb_buddy_alloc_success (integer,
htlb_buddy_alloc_success) - htlb_buddy_alloc_fail (integer,
htlb_buddy_alloc_fail) - unevictable_pgs_culled (integer,
unevictable_pgs_culled) - unevictable_pgs_scanned (integer,
unevictable_pgs_scanned) - unevictable_pgs_rescued (integer,
unevictable_pgs_rescued) - unevictable_pgs_mlocked (integer,
unevictable_pgs_mlocked) - unevictable_pgs_munlocked (integer,
unevictable_pgs_munlocked) - unevictable_pgs_cleared (integer,
unevictable_pgs_cleared) - unevictable_pgs_stranded (integer,
unevictable_pgs_stranded) - unevictable_pgs_mlockfreed (integer,
unevictable_pgs_mlockfreed) - thp_fault_alloc (integer,
thp_fault_alloc) - thp_fault_fallback (integer,
thp_fault_fallback) - thp_collapse_alloc (integer,
thp_collapse_alloc) - thp_collapse_alloc_failed (integer,
thp_collapse_alloc_failed) - thp_split (integer,
thp_split)
- nr_free_pages (integer,
None
$ telegraf --config ~/ws/telegraf.conf --input-filter kernel_vmstat --test
* Plugin: kernel_vmstat, Collection 1
> kernel_vmstat allocstall=81496i,compact_blocks_moved=238196i,compact_fail=135220i,compact_pagemigrate_failed=0i,compact_pages_moved=6370588i,compact_stall=142092i,compact_success=6872i,htlb_buddy_alloc_fail=0i,htlb_buddy_alloc_success=0i,kswapd_high_wmark_hit_quickly=25439i,kswapd_inodesteal=29770874i,kswapd_low_wmark_hit_quickly=8756i,kswapd_skip_congestion_wait=0i,kswapd_steal=291534428i,nr_active_anon=2515657i,nr_active_file=2244914i,nr_anon_pages=1358675i,nr_anon_transparent_hugepages=2034i,nr_bounce=0i,nr_dirty=5690i,nr_file_pages=5153546i,nr_free_pages=78730i,nr_inactive_anon=426259i,nr_inactive_file=2366791i,nr_isolated_anon=0i,nr_isolated_file=0i,nr_kernel_stack=579i,nr_mapped=558821i,nr_mlock=0i,nr_page_table_pages=11115i,nr_shmem=541689i,nr_slab_reclaimable=459806i,nr_slab_unreclaimable=47859i,nr_unevictable=0i,nr_unstable=0i,nr_vmscan_write=6206i,nr_writeback=0i,nr_writeback_temp=0i,numa_foreign=0i,numa_hit=5113399878i,numa_interleave=35793i,numa_local=5113399878i,numa_miss=0i,numa_other=0i,pageoutrun=505006i,pgactivate=375664931i,pgalloc_dma=0i,pgalloc_dma32=122480220i,pgalloc_movable=0i,pgalloc_normal=5233176719i,pgdeactivate=122735906i,pgfault=8699921410i,pgfree=5359765021i,pginodesteal=9188431i,pgmajfault=122210i,pgpgin=219717626i,pgpgout=3495885510i,pgrefill_dma=0i,pgrefill_dma32=1180010i,pgrefill_movable=0i,pgrefill_normal=119866676i,pgrotated=60620i,pgscan_direct_dma=0i,pgscan_direct_dma32=12256i,pgscan_direct_movable=0i,pgscan_direct_normal=31501600i,pgscan_kswapd_dma=0i,pgscan_kswapd_dma32=4480608i,pgscan_kswapd_movable=0i,pgscan_kswapd_normal=287857984i,pgsteal_dma=0i,pgsteal_dma32=4466436i,pgsteal_movable=0i,pgsteal_normal=318463755i,pswpin=2092i,pswpout=6206i,slabs_scanned=93775616i,thp_collapse_alloc=24857i,thp_collapse_alloc_failed=102214i,thp_fault_alloc=346219i,thp_fault_fallback=895453i,thp_split=9817i,unevictable_pgs_cleared=0i,unevictable_pgs_culled=1531i,unevictable_pgs_mlocked=6988i,unevictable_pgs_mlockfreed=0i,unevictable_pgs_munlocked=6988i,unevictable_pgs_rescued=5426i,unevictable_pgs_scanned=0i,unevictable_pgs_stranded=0i,zone_reclaim_failed=0i 1459455200071462843