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2026-04-30 - 22:02
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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 Apr 30, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2254277998628,39cyclictest2376648-21cat10:50:144
2254277998628,39cyclictest2376648-21cat10:50:144
2254277997738,18cyclictest870-21mta-sts-daemon10:28:164
2254277997638,38cyclictest2331975-21latency09:30:204
2254277997416,39cyclictest413-21systemd-journal11:55:014
2254277997315,39cyclictest2295296-21sed08:20:204
2254277997235,18cyclictest872-21mta-sts-daemon10:10:204
2254277997011,40cyclictest2415940-21ntpq12:00:204
2254277997010,59cyclictest2253627-21kworker/u32:2+events_unbound08:09:544
2254277996931,38cyclictest601ktimers/408:00:064
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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