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2024-02-27 - 00:36
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 376 highest latencies:
System rack3slot6 (updated Mon Feb 26, 2024 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
510821240,4chrt5106-21ntp_states11:00:380
3142421200,4chrt30987-21apt-get10:45:120
1165221200,4chrt11653-21idleruntime-cro08:25:010
1487421170,4chrt14872-21apt10:00:200
3209621160,4chrt32092-21grep12:15:330
1714021130,4chrt17138-21aten2.4_r3power11:35:250
3164721110,4sleep031646-21sort09:15:400
2455421070,4chrt24556-21awk10:25:350
2240321010,4chrt22405-21grep08:50:470
96802860,5chrt9681-21munin-plugin-st11:15:000
63132800,4chrt6311-21awk08:10:250
327302800,4chrt32727-21basename09:20:250
225742770,4chrt22565-21aten2.4_r3power11:50:220
203832770,5chrt20382-21pluginstate08:45:430
303322760,5sleep030329-21grep10:40:420
282502750,4chrt28249-21cat12:05:300
277612750,5chrt27762-21cat09:05:440
144892736,53sleep014517-21/usr/sbin/munin07:05:410
233432720,5chrt23339-21aten2.4_r3power07:30:270
291772710,4sleep029178-21expr07:45:280
68422680,4chrt28-21kcompactd012:35:090
277212650,4sleep027724-21sort10:35:270
108582520,4sleep010853-21grep11:15:430
47792513,8sleep04822-21users09:30:480
15554995141,6cyclictest0-21swapper/007:10:010
1555499508,19cyclictest809-21apt-get10:50:230
257742492,8sleep025809-21ntp_states07:35:380
19992492,8sleep02098-21ls08:00:240
1555499493,40cyclictest26073-21/usr/sbin/munin12:00:340
1555499483,13cyclictest17489-21python310:05:420
15554994824,16cyclictest20304-21apt-get10:15:230
1555499482,17cyclictest18956-21irqstats10:10:310
15554994820,17cyclictest21525-21apt-get07:25:200
94922472,40sleep09501-21df_inode09:45:280
1555499473,13cyclictest3795-21python312:25:390
1555499467,16cyclictest4774-21apt-get12:30:230
1555499464,37cyclictest26230-21memory10:30:340
15554994632,9cyclictest18369-21irqstats07:15:310
1555499462,37cyclictest304842sleep009:14:080
1555499462,13cyclictest25025-21ps11:55:420
1555499457,28cyclictest1941-21apt-get09:25:240
1555499457,18cyclictest30692-21apt-get07:50:210
1555499457,16cyclictest27108-21apt-get07:40:220
1555499455,9cyclictest0-21swapper/007:58:510
15554994531,9cyclictest19419-21memory11:40:320
15554994531,9cyclictest1515-21diskstats12:20:280
15554994527,13cyclictest14375-21runrttasks09:57:310
80632443,35sleep08074-21ntp_states09:40:360
1555499447,15cyclictest2598-21apt-get10:55:230
1555499446,16cyclictest23229-21apt-get08:55:240
1555499443,35cyclictest17857-21df08:40:250
1555499442,14cyclictest454-21snmpd11:30:130
1555499442,14cyclictest14226-21diskstats08:30:310
15554994420,14cyclictest12101-21apt-get08:25:230
206842430,4sleep020683-21cat07:20:440
1555499436,17cyclictest20678-21apt-get11:45:180
1555499435,27cyclictest3500-21apt-get08:05:110
15554994325,13cyclictest6205-21apt-get11:05:220
1555499423,8cyclictest8981-21users08:15:460
1555499423,34cyclictest14948-21runrttasks11:29:050
15554994227,10cyclictest12358-21ntp_states11:20:380
1555499422,33cyclictest10966-21/usr/sbin/munin09:50:300
1555499422,10cyclictest6561-21sed09:35:420
1555499412,35cyclictest26129-21runrttasks09:00:420
1555499404,11cyclictest16138-21irqstats08:35:360
15554994023,11cyclictest29702-21/usr/sbin/munin12:10:340
15554994021,14cyclictest22445-21diskstats10:20:310
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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