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2026-04-02 - 07:19
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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 Thu Apr 02, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3449808997441,31cyclictest3513915-21kworker/1:222:00:131
3449808997141,29cyclictest3639392-21kworker/1:200:35:001
3449808997043,26cyclictest3479741-21kworker/1:020:45:131
3449808996946,22cyclictest535011-1kworker/1:2H00:25:121
3449808996842,25cyclictest3540908-21kworker/1:022:40:351
3449808996737,29cyclictest3621802-21kworker/1:023:55:131
3449808996638,26cyclictest3582892-21kworker/1:023:05:141
344980899660,63cyclictest3496493-21fschecks_time21:20:131
3449808996561,2cyclictest0-21swapper/122:55:541
344980899650,1cyclictest0-21swapper/121:45:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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