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2026-09-16 - 05:15
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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 Sep 16, 2026 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
400245721070,1sleep20-21swapper/200:19:282
38991692780,1sleep00-21swapper/023:24:100
39259662710,1sleep03925968-21grep23:39:210
35280192320,1sleep00-21swapper/019:29:320
349847499286,21cyclictest171ktimers/019:59:050
3498474992320,2cyclictest4008658-21sort00:24:250
3498474992316,6cyclictest24604-21gnome-shell20:59:090
349847499230,3cyclictest3542965-21apt-get19:44:050
3498475992215,6cyclictest24615-21JS14:54:061
349847499228,9cyclictest0-21swapper/021:59:070
3498474992216,5cyclictest3498472-21cyclictest00:39:060
3498474992214,6cyclictest3865861-21kthreadcore23:04:270
3498474992211,7cyclictest3646183-21kworker/u16:0-events_power_efficient21:22:070
349847499220,3cyclictest3763992-21apt-get22:05:060
349847499215,9cyclictest3678454-21sshd-session21:19:250
349847499215,9cyclictest0-21swapper/000:34:050
349847499208,8cyclictest4019695-21kthreadcore00:29:300
349847499207,6cyclictest24604-21gnome-shell21:10:590
3498474992014,5cyclictest3850061-21kthreadcore22:54:320
3498474992013,6cyclictest3698197-21kthreadcore21:29:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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