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2026-03-19 - 17:00
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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 Mar 19, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
254949699660,64cyclictest0-21swapper/110:48:051
254949699652,62cyclictest0-21swapper/110:00:141
254949699650,63cyclictest0-21swapper/108:04:361
2549496996341,20cyclictest294981-1kworker/1:0H07:30:001
254949699630,1cyclictest0-21swapper/107:44:421
2549496996259,2cyclictest0-21swapper/107:46:111
254949699620,1cyclictest0-21swapper/112:16:101
2549496996159,1cyclictest0-21swapper/110:23:121
2549496996057,2cyclictest0-21swapper/108:28:411
2549496996030,28cyclictest294981-1kworker/1:0H07:35:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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