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2026-06-04 - 18:54
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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
Characteristics of the 20 highest latencies:
System rackcslot6.osadl.org (updated Thu Jun 04, 2026 12:46:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
186316499381380,1cyclictest1974965-21kworker/5:211:53:025
186316499381380,1cyclictest1974965-21kworker/5:210:43:025
186316499381380,1cyclictest1974965-21kworker/5:210:43:025
186316499381379,1cyclictest1974965-21kworker/5:212:38:035
186316499381379,1cyclictest1974965-21kworker/5:211:42:025
186316499381379,1cyclictest1974965-21kworker/5:210:26:015
186316499381379,1cyclictest1945190-21kworker/5:010:02:015
1863164993811,379cyclictest0-21swapper/511:04:025
1863164993810,380cyclictest0-21swapper/512:22:025
1863164993810,380cyclictest0-21swapper/510:23:025
1863164993810,380cyclictest0-21swapper/508:46:015
186312499381380,1cyclictest2120318-21kworker/0:112:36:030
186312499381380,1cyclictest2120318-21kworker/0:108:11:020
186312499381379,1cyclictest2120318-21kworker/0:112:02:020
186312499381379,1cyclictest2120318-21kworker/0:111:51:020
1863124993811,379cyclictest0-21swapper/009:57:020
1863124993810,380cyclictest0-21swapper/009:27:010
1863124993810,380cyclictest0-21swapper/008:59:010
1863124993810,380cyclictest0-21swapper/008:26:010
186316499380379,1cyclictest1974965-21kworker/5:212:08:025
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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