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Add kernel_vmstat input plugins

This commit is contained in:
Jan Shim 2016-04-06 11:35:33 -07:00 committed by robinpercy-xm
parent 3af65e7abb
commit 0abaf7bf6a
4 changed files with 717 additions and 0 deletions
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3
etc/telegraf.conf
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@ -422,6 +422,9 @@
[[inputs.kernel]] [[inputs.kernel]]
# no configuration # no configuration
# # Get kernel statistics from /proc/vmstat
# [[inputs.kernel_vmstat]]
# # no configuration
# Read metrics about memory usage # Read metrics about memory usage
[[inputs.mem]] [[inputs.mem]]

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plugins/inputs/system/KERNEL_VMSTAT_README.md Normal file
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# Kernel VMStat Input Plugin
This plugin is only available on Linux.
The kernel_vmstat plugin gathers info about the kernel that doesn't fit into other
plugins. In general, it is the statistics available in `/proc/vmstat` that are
not covered by other plugins.
The metrics are documented in `man proc` under the `/proc/vmstat` section.
```
/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
```
### Configuration:
```toml
# Get kernel statistics from /proc/vmstat
[[inputs.kernel_vmstat]]
# no configuration
```
### Measurements & Fields:
- 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`)
### Tags:
None
### Example Output:
```
$ 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
```

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plugins/inputs/system/kernel_vmstat.go Normal file
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// +build linux
package system
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"strconv"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/plugins/inputs"
)
// /proc/vmstat file line prefixes to gather stats on.
// This is currently not being used as we are retrieving all the stats. Left here for references.
var (
nr_free_pages = []byte("nr_free_pages")
nr_inactive_anon = []byte("nr_inactive_anon")
nr_active_anon = []byte("nr_active_anon")
nr_inactive_file = []byte("nr_inactive_file")
nr_active_file = []byte("nr_active_file")
nr_unevictable = []byte("nr_unevictable")
nr_mlock = []byte("nr_mlock")
nr_anon_pages = []byte("nr_anon_pages")
nr_mapped = []byte("nr_mapped")
nr_file_pages = []byte("nr_file_pages")
nr_dirty = []byte("nr_dirty")
nr_writeback = []byte("nr_writeback")
nr_slab_reclaimable = []byte("nr_slab_reclaimable")
nr_slab_unreclaimable = []byte("nr_slab_unreclaimable")
nr_page_table_pages = []byte("nr_page_table_pages")
nr_kernel_stack = []byte("nr_kernel_stack")
nr_unstable = []byte("nr_unstable")
nr_bounce = []byte("nr_bounce")
nr_vmscan_write = []byte("nr_vmscan_write")
nr_writeback_temp = []byte("nr_writeback_temp")
nr_isolated_anon = []byte("nr_isolated_anon")
nr_isolated_file = []byte("nr_isolated_file")
nr_shmem = []byte("nr_shmem")
numa_hit = []byte("numa_hit")
numa_miss = []byte("numa_miss")
numa_foreign = []byte("numa_foreign")
numa_interleave = []byte("numa_interleave")
numa_local = []byte("numa_local")
numa_other = []byte("numa_other")
nr_anon_transparent_hugepages = []byte("nr_anon_transparent_hugepages")
pgpgin = []byte("pgpgin")
pgpgout = []byte("pgpgout")
pswpin = []byte("pswpin")
pswpout = []byte("pswpout")
pgalloc_dma = []byte("pgalloc_dma")
pgalloc_dma32 = []byte("pgalloc_dma32")
pgalloc_normal = []byte("pgalloc_normal")
pgalloc_movable = []byte("pgalloc_movable")
pgfree = []byte("pgfree")
pgactivate = []byte("pgactivate")
pgdeactivate = []byte("pgdeactivate")
pgfault = []byte("pgfault")
pgmajfault = []byte("pgmajfault")
pgrefill_dma = []byte("pgrefill_dma")
pgrefill_dma32 = []byte("pgrefill_dma32")
pgrefill_normal = []byte("pgrefill_normal")
pgrefill_movable = []byte("pgrefill_movable")
pgsteal_dma = []byte("pgsteal_dma")
pgsteal_dma32 = []byte("pgsteal_dma32")
pgsteal_normal = []byte("pgsteal_normal")
pgsteal_movable = []byte("pgsteal_movable")
pgscan_kswapd_dma = []byte("pgscan_kswapd_dma")
pgscan_kswapd_dma32 = []byte("pgscan_kswapd_dma32")
pgscan_kswapd_normal = []byte("pgscan_kswapd_normal")
pgscan_kswapd_movable = []byte("pgscan_kswapd_movable")
pgscan_direct_dma = []byte("pgscan_direct_dma")
pgscan_direct_dma32 = []byte("pgscan_direct_dma32")
pgscan_direct_normal = []byte("pgscan_direct_normal")
pgscan_direct_movable = []byte("pgscan_direct_movable")
zone_reclaim_failed = []byte("zone_reclaim_failed")
pginodesteal = []byte("pginodesteal")
slabs_scanned = []byte("slabs_scanned")
kswapd_steal = []byte("kswapd_steal")
kswapd_inodesteal = []byte("kswapd_inodesteal")
kswapd_low_wmark_hit_quickly = []byte("kswapd_low_wmark_hit_quickly")
kswapd_high_wmark_hit_quickly = []byte("kswapd_high_wmark_hit_quickly")
kswapd_skip_congestion_wait = []byte("kswapd_skip_congestion_wait")
pageoutrun = []byte("pageoutrun")
allocstall = []byte("allocstall")
pgrotated = []byte("pgrotated")
compact_blocks_moved = []byte("compact_blocks_moved")
compact_pages_moved = []byte("compact_pages_moved")
compact_pagemigrate_failed = []byte("compact_pagemigrate_failed")
compact_stall = []byte("compact_stall")
compact_fail = []byte("compact_fail")
compact_success = []byte("compact_success")
htlb_buddy_alloc_success = []byte("htlb_buddy_alloc_success")
htlb_buddy_alloc_fail = []byte("htlb_buddy_alloc_fail")
unevictable_pgs_culled = []byte("unevictable_pgs_culled")
unevictable_pgs_scanned = []byte("unevictable_pgs_scanned")
unevictable_pgs_rescued = []byte("unevictable_pgs_rescued")
unevictable_pgs_mlocked = []byte("unevictable_pgs_mlocked")
unevictable_pgs_munlocked = []byte("unevictable_pgs_munlocked")
unevictable_pgs_cleared = []byte("unevictable_pgs_cleared")
unevictable_pgs_stranded = []byte("unevictable_pgs_stranded")
unevictable_pgs_mlockfreed = []byte("unevictable_pgs_mlockfreed")
thp_fault_alloc = []byte("thp_fault_alloc")
thp_fault_fallback = []byte("thp_fault_fallback")
thp_collapse_alloc = []byte("thp_collapse_alloc")
thp_collapse_alloc_failed = []byte("thp_collapse_alloc_failed")
thp_split = []byte("thp_split")
)
type KernelVmstat struct {
statFile string
}
func (k *KernelVmstat) Description() string {
return "Get kernel statistics from /proc/vmstat"
}
func (k *KernelVmstat) SampleConfig() string {
return `[[inputs.kernel_vmstat]]`
}
func (k *KernelVmstat) Gather(acc telegraf.Accumulator) error {
data, err := k.getProcVmstat()
if err != nil {
return err
}
fields := make(map[string]interface{})
dataFields := bytes.Fields(data)
for i, field := range dataFields {
// dataFields is an array of {"stat1_name", "stat1_value", "stat2_name", "stat2_value", ...}
// We only want the even number index as that contain the stat name.
if i%2 == 0 {
// Convert the stat value into an integer.
m, err := strconv.Atoi(string(dataFields[i+1]))
if err != nil {
return err
}
fields[string(field)] = int64(m)
}
}
acc.AddFields("kernel_vmstat", fields, map[string]string{})
return nil
}
func (k *KernelVmstat) getProcVmstat() ([]byte, error) {
if _, err := os.Stat(k.statFile); os.IsNotExist(err) {
return nil, fmt.Errorf("kernel_vmstat: %s does not exist!", k.statFile)
} else if err != nil {
return nil, err
}
data, err := ioutil.ReadFile(k.statFile)
if err != nil {
return nil, err
}
return data, nil
}
func init() {
inputs.Add("kernel_vmstat", func() telegraf.Input {
return &KernelVmstat{
statFile: "/proc/vmstat",
}
})
}

315
plugins/inputs/system/kernel_vmstat_test.go Normal file
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// +build linux
package system
import (
"io/ioutil"
"os"
"testing"
"github.com/influxdata/telegraf/testutil"
"github.com/stretchr/testify/assert"
)
func TestFullVmStatProcFile(t *testing.T) {
tmpfile := makeFakeStatFile([]byte(vmStatFile_Full))
defer os.Remove(tmpfile)
k := KernelVmstat{
statFile: tmpfile,
}
acc := testutil.Accumulator{}
err := k.Gather(&acc)
assert.NoError(t, err)
fields := map[string]interface{}{
"nr_free_pages": int64(78730),
"nr_inactive_anon": int64(426259),
"nr_active_anon": int64(2515657),
"nr_inactive_file": int64(2366791),
"nr_active_file": int64(2244914),
"nr_unevictable": int64(0),
"nr_mlock": int64(0),
"nr_anon_pages": int64(1358675),
"nr_mapped": int64(558821),
"nr_file_pages": int64(5153546),
"nr_dirty": int64(5690),
"nr_writeback": int64(0),
"nr_slab_reclaimable": int64(459806),
"nr_slab_unreclaimable": int64(47859),
"nr_page_table_pages": int64(11115),
"nr_kernel_stack": int64(579),
"nr_unstable": int64(0),
"nr_bounce": int64(0),
"nr_vmscan_write": int64(6206),
"nr_writeback_temp": int64(0),
"nr_isolated_anon": int64(0),
"nr_isolated_file": int64(0),
"nr_shmem": int64(541689),
"numa_hit": int64(5113399878),
"numa_miss": int64(0),
"numa_foreign": int64(0),
"numa_interleave": int64(35793),
"numa_local": int64(5113399878),
"numa_other": int64(0),
"nr_anon_transparent_hugepages": int64(2034),
"pgpgin": int64(219717626),
"pgpgout": int64(3495885510),
"pswpin": int64(2092),
"pswpout": int64(6206),
"pgalloc_dma": int64(0),
"pgalloc_dma32": int64(122480220),
"pgalloc_normal": int64(5233176719),
"pgalloc_movable": int64(0),
"pgfree": int64(5359765021),
"pgactivate": int64(375664931),
"pgdeactivate": int64(122735906),
"pgfault": int64(8699921410),
"pgmajfault": int64(122210),
"pgrefill_dma": int64(0),
"pgrefill_dma32": int64(1180010),
"pgrefill_normal": int64(119866676),
"pgrefill_movable": int64(0),
"pgsteal_dma": int64(0),
"pgsteal_dma32": int64(4466436),
"pgsteal_normal": int64(318463755),
"pgsteal_movable": int64(0),
"pgscan_kswapd_dma": int64(0),
"pgscan_kswapd_dma32": int64(4480608),
"pgscan_kswapd_normal": int64(287857984),
"pgscan_kswapd_movable": int64(0),
"pgscan_direct_dma": int64(0),
"pgscan_direct_dma32": int64(12256),
"pgscan_direct_normal": int64(31501600),
"pgscan_direct_movable": int64(0),
"zone_reclaim_failed": int64(0),
"pginodesteal": int64(9188431),
"slabs_scanned": int64(93775616),
"kswapd_steal": int64(291534428),
"kswapd_inodesteal": int64(29770874),
"kswapd_low_wmark_hit_quickly": int64(8756),
"kswapd_high_wmark_hit_quickly": int64(25439),
"kswapd_skip_congestion_wait": int64(0),
"pageoutrun": int64(505006),
"allocstall": int64(81496),
"pgrotated": int64(60620),
"compact_blocks_moved": int64(238196),
"compact_pages_moved": int64(6370588),
"compact_pagemigrate_failed": int64(0),
"compact_stall": int64(142092),
"compact_fail": int64(135220),
"compact_success": int64(6872),
"htlb_buddy_alloc_success": int64(0),
"htlb_buddy_alloc_fail": int64(0),
"unevictable_pgs_culled": int64(1531),
"unevictable_pgs_scanned": int64(0),
"unevictable_pgs_rescued": int64(5426),
"unevictable_pgs_mlocked": int64(6988),
"unevictable_pgs_munlocked": int64(6988),
"unevictable_pgs_cleared": int64(0),
"unevictable_pgs_stranded": int64(0),
"unevictable_pgs_mlockfreed": int64(0),
"thp_fault_alloc": int64(346219),
"thp_fault_fallback": int64(895453),
"thp_collapse_alloc": int64(24857),
"thp_collapse_alloc_failed": int64(102214),
"thp_split": int64(9817),
}
acc.AssertContainsFields(t, "kernel_vmstat", fields)
}
func TestPartialVmStatProcFile(t *testing.T) {
tmpfile := makeFakeStatFile([]byte(vmStatFile_Partial))
defer os.Remove(tmpfile)
k := KernelVmstat{
statFile: tmpfile,
}
acc := testutil.Accumulator{}
err := k.Gather(&acc)
assert.NoError(t, err)
fields := map[string]interface{}{
"unevictable_pgs_culled": int64(1531),
"unevictable_pgs_scanned": int64(0),
"unevictable_pgs_rescued": int64(5426),
"unevictable_pgs_mlocked": int64(6988),
"unevictable_pgs_munlocked": int64(6988),
"unevictable_pgs_cleared": int64(0),
"unevictable_pgs_stranded": int64(0),
"unevictable_pgs_mlockfreed": int64(0),
"thp_fault_alloc": int64(346219),
"thp_fault_fallback": int64(895453),
"thp_collapse_alloc": int64(24857),
"thp_collapse_alloc_failed": int64(102214),
"thp_split": int64(9817),
}
acc.AssertContainsFields(t, "kernel_vmstat", fields)
}
func TestInvalidVmStatProcFile1(t *testing.T) {
tmpfile := makeFakeStatFile([]byte(vmStatFile_Invalid))
defer os.Remove(tmpfile)
k := KernelVmstat{
statFile: tmpfile,
}
acc := testutil.Accumulator{}
err := k.Gather(&acc)
assert.Error(t, err)
}
func TestNoVmStatProcFile(t *testing.T) {
tmpfile := makeFakeStatFile([]byte(vmStatFile_Invalid))
os.Remove(tmpfile)
k := KernelVmstat{
statFile: tmpfile,
}
acc := testutil.Accumulator{}
err := k.Gather(&acc)
assert.Error(t, err)
assert.Contains(t, err.Error(), "does not exist")
}
const vmStatFile_Full = `nr_free_pages 78730
nr_inactive_anon 426259
nr_active_anon 2515657
nr_inactive_file 2366791
nr_active_file 2244914
nr_unevictable 0
nr_mlock 0
nr_anon_pages 1358675
nr_mapped 558821
nr_file_pages 5153546
nr_dirty 5690
nr_writeback 0
nr_slab_reclaimable 459806
nr_slab_unreclaimable 47859
nr_page_table_pages 11115
nr_kernel_stack 579
nr_unstable 0
nr_bounce 0
nr_vmscan_write 6206
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 541689
numa_hit 5113399878
numa_miss 0
numa_foreign 0
numa_interleave 35793
numa_local 5113399878
numa_other 0
nr_anon_transparent_hugepages 2034
pgpgin 219717626
pgpgout 3495885510
pswpin 2092
pswpout 6206
pgalloc_dma 0
pgalloc_dma32 122480220
pgalloc_normal 5233176719
pgalloc_movable 0
pgfree 5359765021
pgactivate 375664931
pgdeactivate 122735906
pgfault 8699921410
pgmajfault 122210
pgrefill_dma 0
pgrefill_dma32 1180010
pgrefill_normal 119866676
pgrefill_movable 0
pgsteal_dma 0
pgsteal_dma32 4466436
pgsteal_normal 318463755
pgsteal_movable 0
pgscan_kswapd_dma 0
pgscan_kswapd_dma32 4480608
pgscan_kswapd_normal 287857984
pgscan_kswapd_movable 0
pgscan_direct_dma 0
pgscan_direct_dma32 12256
pgscan_direct_normal 31501600
pgscan_direct_movable 0
zone_reclaim_failed 0
pginodesteal 9188431
slabs_scanned 93775616
kswapd_steal 291534428
kswapd_inodesteal 29770874
kswapd_low_wmark_hit_quickly 8756
kswapd_high_wmark_hit_quickly 25439
kswapd_skip_congestion_wait 0
pageoutrun 505006
allocstall 81496
pgrotated 60620
compact_blocks_moved 238196
compact_pages_moved 6370588
compact_pagemigrate_failed 0
compact_stall 142092
compact_fail 135220
compact_success 6872
htlb_buddy_alloc_success 0
htlb_buddy_alloc_fail 0
unevictable_pgs_culled 1531
unevictable_pgs_scanned 0
unevictable_pgs_rescued 5426
unevictable_pgs_mlocked 6988
unevictable_pgs_munlocked 6988
unevictable_pgs_cleared 0
unevictable_pgs_stranded 0
unevictable_pgs_mlockfreed 0
thp_fault_alloc 346219
thp_fault_fallback 895453
thp_collapse_alloc 24857
thp_collapse_alloc_failed 102214
thp_split 9817`
const vmStatFile_Partial = `unevictable_pgs_culled 1531
unevictable_pgs_scanned 0
unevictable_pgs_rescued 5426
unevictable_pgs_mlocked 6988
unevictable_pgs_munlocked 6988
unevictable_pgs_cleared 0
unevictable_pgs_stranded 0
unevictable_pgs_mlockfreed 0
thp_fault_alloc 346219
thp_fault_fallback 895453
thp_collapse_alloc 24857
thp_collapse_alloc_failed 102214
thp_split 9817`
// invalid thp_split measurement
const vmStatFile_Invalid = `unevictable_pgs_culled 1531
unevictable_pgs_scanned 0
unevictable_pgs_rescued 5426
unevictable_pgs_mlocked 6988
unevictable_pgs_munlocked 6988
unevictable_pgs_cleared 0
unevictable_pgs_stranded 0
unevictable_pgs_mlockfreed 0
thp_fault_alloc 346219
thp_fault_fallback 895453
thp_collapse_alloc 24857
thp_collapse_alloc_failed 102214
thp_split abcd`
func makeFakeVmStatFile(content []byte) string {
tmpfile, err := ioutil.TempFile("", "kernel_vmstat_test")
if err != nil {
panic(err)
}
if _, err := tmpfile.Write(content); err != nil {
panic(err)
}
if err := tmpfile.Close(); err != nil {
panic(err)
}
return tmpfile.Name()
}