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2025-11-20 - 18:05
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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 rackcslot4.osadl.org (updated Thu Nov 20, 2025 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2369632270193,62sleep00-21swapper/007:07:350
2369842253181,57sleep10-21swapper/107:07:481
1258991060,4rtkit-daemon1257-21rtkit-daemon11:00:521
125899670,4rtkit-daemon1257-21rtkit-daemon08:40:200
125899650,4rtkit-daemon1257-21rtkit-daemon09:05:270
125899630,4rtkit-daemon1257-21rtkit-daemon11:59:180
125899630,4rtkit-daemon1257-21rtkit-daemon10:46:350
125899620,4rtkit-daemon1257-21rtkit-daemon12:39:040
125899620,4rtkit-daemon1257-21rtkit-daemon09:03:210
125899520,4rtkit-daemon1257-21rtkit-daemon11:51:351
125899520,3rtkit-daemon1257-21rtkit-daemon10:01:581
125899490,4rtkit-daemon1257-21rtkit-daemon11:02:380
3942132470,6sleep10-21swapper/111:30:321
125899420,3rtkit-daemon1257-21rtkit-daemon07:17:421
125899400,4rtkit-daemon0-21swapper/110:10:061
125899390,5rtkit-daemon1257-21rtkit-daemon07:45:141
125899390,3rtkit-daemon0-21swapper/111:22:061
125899390,3rtkit-daemon0-21swapper/110:29:281
125899390,3rtkit-daemon0-21swapper/109:46:161
23730599380,7cyclictest26-21ksoftirqd/110:25:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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