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2026-05-14 - 14:32
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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 rackdslot3.osadl.org (updated Thu May 14, 2026 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491205171,23phc2sys0-21swapper/319:08:513
97672204172,22sleep10-21swapper/119:07:111
98782201168,22sleep00-21swapper/019:08:390
97582199166,22sleep20-21swapper/219:07:042
10278996430,8cyclictest41-21ksoftirqd/322:55:003
10278996327,5cyclictest41-21ksoftirqd/321:45:003
10278996327,5cyclictest41-21ksoftirqd/321:45:003
10278996237,3cyclictest41-21ksoftirqd/300:15:223
10278996228,4cyclictest41-21ksoftirqd/321:55:223
10278996127,4cyclictest41-21ksoftirqd/322:15:133
10278996119,9cyclictest41-21ksoftirqd/322:05:243
10278996023,8cyclictest41-21ksoftirqd/322:25:223
10278995923,4cyclictest41-21ksoftirqd/321:05:153
10278995917,7cyclictest41-21ksoftirqd/322:30:233
10278995828,6cyclictest41-21ksoftirqd/323:15:003
10278995827,4cyclictest41-21ksoftirqd/323:05:013
10278995824,9cyclictest41-21ksoftirqd/321:15:003
10278995821,8cyclictest41-21ksoftirqd/322:10:243
10278995740,3cyclictest41-21ksoftirqd/319:50:253
10278995727,7cyclictest41-21ksoftirqd/319:39:593
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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