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2026-06-07 - 13:40
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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 rackfslot7.osadl.org (updated Sun Jun 07, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
506599680,67cyclictest0-21swapper/509:25:145
506399687,40cyclictest236199-21snmpd08:14:553
506399679,39cyclictest141000-21awk11:15:173
506399679,39cyclictest141000-21awk11:15:173
506399678,39cyclictest1086-21runrttasks08:25:053
5063996729,19cyclictest0-21swapper/312:15:453
5063996526,39cyclictest511ktimers/308:18:013
5063995919,20cyclictest35565-21/usr/sbin/munin08:05:133
5063995917,19cyclictest66427-21if_eno209:00:153
5063995820,1cyclictest786-21systemd-logind08:40:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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