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2026-07-23 - 16:13
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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 Thu Jul 23, 2026 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20129099148147,1cyclictest1-21systemd11:55:016
20128499820,0cyclictest0-21swapper/110:55:111
201287997033,18cyclictest0-21swapper/412:22:204
20128799699,59cyclictest252349-21ntpq08:40:204
201287996930,39cyclictest0-21swapper/407:59:004
201291996729,19cyclictest0-21swapper/708:05:167
201287996729,19cyclictest0-21swapper/411:08:444
20128799668,39cyclictest231487-21perf08:05:004
20128799667,40cyclictest363775-21/usr/sbin/munin12:05:184
201291996565,0cyclictest0-21swapper/708:45:157
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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