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2026-04-28 - 10:01
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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 rackeslot8.osadl.org (updated Tue Apr 28, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20419472290,8sleep12041950-21irqrtprio23:45:181
1643932992724,1cyclictest0-21swapper/322:40:003
1643932992623,1cyclictest0-21swapper/322:50:003
1643932992623,1cyclictest0-21swapper/322:45:003
1643932992617,6cyclictest1970888-21sleep23:00:013
1643932992420,1cyclictest0-21swapper/321:05:013
21104782221,12sleep22110484-21ssh00:29:462
1643932992219,1cyclictest0-21swapper/321:40:003
1643932992219,1cyclictest0-21swapper/300:35:193
1643932992118,1cyclictest0-21swapper/321:15:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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