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2026-05-17 - 08:46
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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 Sun May 17, 2026 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
333412699195191,3cyclictest3463901-21grep23:05:011
3334128999635,58cyclictest3444243-21latency_hist22:30:013
333412899919,79cyclictest3448321-21irqstats22:35:163
3334128999191,0cyclictest3491446-21munin-run23:55:003
3334128999133,39cyclictest3379895-21sensors_temp20:30:243
3334128998546,19cyclictest0-21swapper/323:35:203
333412899780,59cyclictest3464063-21kworker/u32:5+flush-8:023:22:103
3334127997414,59cyclictest0-21swapper/221:55:162
3334128997355,18cyclictest511ktimers/323:08:543
3334128997334,39cyclictest362-21jbd2/sda2-820:13:013
3334128997333,39cyclictest0-21swapper/320:16:353
3334128997233,39cyclictest0-21swapper/322:48:383
3334128997233,39cyclictest0-21swapper/322:14:313
3334128997233,39cyclictest0-21swapper/322:05:083
3334128997233,39cyclictest0-21swapper/320:47:513
3334128997233,39cyclictest0-21swapper/319:44:493
3334128997233,38cyclictest0-21swapper/319:10:583
3334128997132,38cyclictest776-21dbus-daemon20:30:013
3334128997011,40cyclictest3334379-21/usr/sbin/munin19:10:043
333412899654,39cyclictest3430722-21systemd-run22:05:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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