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2026-06-04 - 05:52
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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 rackfslot7.osadl.org (updated Thu Jun 04, 2026 00:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23497369911313,99cyclictest0-21swapper/600:25:156
234973599879,60cyclictest2418287-21gcc21:55:205
2349736997214,39cyclictest2420011-21kworker/u32:4+events_unbound23:11:126
2349735997214,39cyclictest2404289-21ntpq21:30:185
234973599679,39cyclictest2412862-21ntp_states21:45:215
234973599668,39cyclictest236199-21snmpd19:37:035
234973599657,39cyclictest2352907-21taskset19:16:465
2349735996426,20cyclictest2452553-21taskset22:55:245
234973599624,39cyclictest2355921-21basename19:25:005
234973599601,59cyclictest0-21swapper/523:46:115
234973599590,39cyclictest2483364-21chrt23:55:055
2349735995436,18cyclictest872-21mta-sts-daemon22:02:185
2349735995414,39cyclictest0-21swapper/522:27:145
2349735995414,39cyclictest0-21swapper/520:27:435
2349735995414,39cyclictest0-21swapper/520:27:425
234973599540,35cyclictest1-21systemd23:20:015
2349735995319,34cyclictest0-21swapper/523:54:425
2349735995319,15cyclictest0-21swapper/520:08:305
2349735995319,15cyclictest0-21swapper/500:11:575
2349735995315,19cyclictest2477464-21cron23:44:595
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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