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2024-04-20 - 04:25
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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 20 highest latencies:
System rackcslot4.osadl.org (updated Sat Apr 20, 2024 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22093342325283,27sleep00-21swapper/019:09:220
22093202324281,28sleep10-21swapper/119:09:131
220951699225219,4cyclictest2243295-21kworker/u8:220:40:240
159199550,8rtkit-daemon2229051-21ntp_states19:55:310
159199550,3rtkit-daemon1590-21rtkit-daemon22:58:230
23986962500,4sleep1251rcuc/100:30:211
159199500,4rtkit-daemon1590-21rtkit-daemon00:08:491
22263082490,1sleep12226306-21tail19:50:221
159199490,3rtkit-daemon1590-21rtkit-daemon20:49:241
22750882480,3sleep10-21swapper/121:35:161
220952099473,11cyclictest2318008-21perf22:40:001
220952099453,13cyclictest2288132-40apt-check21:55:111
220952099444,8cyclictest1-21systemd22:50:001
220952099432,11cyclictest2277751-21cron21:40:001
159199430,4rtkit-daemon0-21swapper/020:38:420
159199430,3rtkit-daemon1590-21rtkit-daemon22:31:020
220952099422,15cyclictest2268161-21gpg-connect-age21:25:011
220952099422,11cyclictest2390768-21latency_hist00:20:001
220952099421,11cyclictest2285586-21mailstats21:50:251
220952099403,12cyclictest2219839-21ls19:35:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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