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2026-09-02 - 21:19
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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 10 highest latencies:
System rackeslot3.osadl.org (updated Wed Sep 02, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3987584996461,2cyclictest0-21swapper/112:39:291
398758499640,2cyclictest0-21swapper/108:38:071
3987584996158,2cyclictest0-21swapper/111:05:211
3987584996144,16cyclictest4021275-21kworker/1:209:10:141
398758499610,60cyclictest0-21swapper/112:03:451
3987584996041,18cyclictest2719758-1kworker/1:0H09:55:001
3987584996040,18cyclictest4191282-21kworker/1:212:15:141
3987584995944,14cyclictest7227-21kworker/1:112:29:581
3987584995944,14cyclictest7227-21kworker/1:112:29:571
3987584995942,16cyclictest4031873-21kworker/1:109:29:571
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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