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2026-01-02 - 16:43
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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 Fri Jan 02, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
609423829,0sleep10-21swapper/107:08:281
3177923727,0sleep30-21swapper/307:06:543
615823324,0sleep20-21swapper/207:09:132
608823026,0sleep00-21swapper/007:08:230
339970,0migration/322359-21fschecks_time12:31:583
339970,0migration/317638-21munin-node10:02:013
149970,0migration/024764-21sh09:48:500
64509960,0cyclictest0-21swapper/012:18:510
64509960,0cyclictest0-21swapper/009:20:410
339960,0migration/36284-21sh10:16:513
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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