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2025-11-26 - 12:54
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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 rackdslot2.osadl.org (updated Wed Nov 26, 2025 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
313292206172,23sleep20-21swapper/219:07:212
312752204170,23sleep10-21swapper/119:06:441
312552204170,23sleep30-21swapper/319:06:303
311662204172,22sleep00-21swapper/019:05:300
1365911340,1ptp4l1137-21/usr/sbin/munin22:35:233
1366918262,11phc2sys0-21swapper/319:10:013
62092640,4sleep16208-21proc_pri23:50:231
278902540,2sleep10-21swapper/122:20:271
136591460,1ptp4l391rcuc/322:32:223
51698450,8rtkit-daemon0-21swapper/122:33:291
136591420,0ptp4l401ktimersoftd/323:14:193
136591420,0ptp4l401ktimersoftd/319:53:113
136591410,0ptp4l401ktimersoftd/321:35:103
136591400,1ptp4l16486-21runrttasks00:11:193
51698380,4rtkit-daemon3201699cyclictest19:56:501
51698380,3rtkit-daemon226-21systemd-journal23:25:361
3201999381,17cyclictest18468-21latency_hist19:50:013
3201799380,36cyclictest0-21swapper/221:35:342
32014993833,3cyclictest14867-21cron20:49:590
193732380,6sleep019375-21ps19:50:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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