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2026-08-16 - 17:38
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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 rack1slot2.osadl.org (updated Sun Aug 16, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3165824940,0sleep10-21swapper/107:26:291
3191923728,0sleep30-21swapper/307:29:313
3187523728,0sleep20-21swapper/207:29:022
3177123322,0sleep00-21swapper/007:27:480
4160,0ktimersoftd/00-21swapper/009:25:400
339960,0migration/332257-21sh11:53:323
339960,0migration/32921-21sh12:31:273
339960,0migration/327640-21sh11:11:033
339960,0migration/325765-21sh10:50:493
339960,0migration/324514-21sh10:32:363
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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