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2026-07-29 - 10:56
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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
Characteristics of the 20 highest latencies:
System rackeslot2.osadl.org (updated Wed Jul 29, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
392373821060,2sleep30-21swapper/323:21:053
37420442690,1sleep03742042-21ssh21:18:450
40045222450,2sleep30-21swapper/300:16:043
35907752430,2sleep30-21swapper/319:16:063
38387272330,2sleep30-21swapper/322:24:543
3578617992615,6cyclictest3874257-21mailstats22:46:100
357861799261,17cyclictest3898728-21systemd-run23:05:010
3578617992514,7cyclictest3836324-21kthreadcore22:21:050
357861999232,9cyclictest0-21swapper/222:00:012
3578618992320,2cyclictest3861141-21idleruntime-cro22:40:011
1157598230,3rtkit-daemon11574-21rtkit-daemon23:15:221
3578618992219,2cyclictest664-21dbus-daemon00:20:021
3578618992219,2cyclictest3735120-21grep21:15:011
3578618992219,2cyclictest3578615-21cyclictest22:50:021
3578618992213,3cyclictest1309-21mta-sts-daemon23:06:031
3578617992213,8cyclictest0-21swapper/023:15:430
3578618992114,3cyclictest4022221-21kthreadcore00:26:051
3578617992118,2cyclictest664-21dbus-daemon00:25:010
3578617992118,2cyclictest3584750-21irqrtprio19:15:020
3578617992115,2cyclictest3853787-21apt-key22:35:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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