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