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2026-05-19 - 20:30
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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 Tue May 19, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
256381721640,2sleep30-21swapper/310:00:143
239392021270,2sleep30-21swapper/308:00:023
276886121110,2sleep30-21swapper/312:15:103
24670632370,2sleep20-21swapper/208:55:122
25738442300,2sleep0241rcuc/010:10:010
23509462280,2sleep02350943-21ps07:25:090
2328272992620,2cyclictest0-21swapper/211:25:022
2328270992617,5cyclictest2779868-21/usr/sbin/munin12:25:160
2328270992615,6cyclictest0-21swapper/011:50:010
2328271992521,2cyclictest3824565-21in:imuxsock07:15:011
2328271992320,2cyclictest2672876-21apt-get11:15:001
2328271992317,2cyclictest134050irq/121-eno112:34:161
2328271992219,2cyclictest2757140-21latency_hist12:10:011
2328271992219,2cyclictest1-21systemd11:45:021
2328271992218,3cyclictest2711207-21cron11:40:001
2328270992218,2cyclictest2431450-21sh08:30:010
2328272992119,1cyclictest0-21swapper/212:20:002
2328272992119,1cyclictest0-21swapper/211:20:012
2328272992118,1cyclictest0-21swapper/210:30:002
2328270992118,2cyclictest2527479-21latency_hist09:40:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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