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2025-12-18 - 21:06
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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 rack0slot2.osadl.org (updated Thu Dec 18, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
390297425241,8sleep40-21swapper/407:06:124
390292624837,8sleep50-21swapper/507:05:335
390303324613,29sleep70-21swapper/707:07:037
3903504994135,5cyclictest4004548-21latency_hist07:59:367
390321823525,7sleep60-21swapper/607:09:356
3903504993428,5cyclictest152018-21latency_hist10:54:357
3903504993428,5cyclictest152018-21latency_hist10:54:357
3903504993325,7cyclictest220175-21latency_hist11:29:357
3903499993028,2cyclictest4180204-21kworker/u16:4+events_unbound10:42:455
3903499992927,2cyclictest3985147-21kworker/u16:1+events_unbound08:10:055
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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