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2026-07-23 - 07:26
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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 10 highest latencies:
System rack3slot6.osadl.org (updated Thu Jul 23, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17562991319,108cyclictest0-21swapper/120:30:131
175589912611,35cyclictest0-21swapper/022:05:120
175629911969,39cyclictest26-21ksoftirqd/119:20:131
3062721120,6chrt30626-21/usr/sbin/munin21:15:261
175589911014,32cyclictest0-21swapper/000:20:130
175629910856,36cyclictest26-21ksoftirqd/120:00:121
1615621086,46sleep016174-21/usr/sbin/munin19:05:180
175629910761,31cyclictest26-21ksoftirqd/123:25:151
175629910756,32cyclictest26-21ksoftirqd/123:20:301
16816210532,20sleep10-21swapper/119:05:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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