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2026-09-23 - 05:54
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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 Wed Sep 23, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2966026563,0sleep10-21swapper/119:29:411
2979624435,0sleep20-21swapper/219:31:182
2995523928,0sleep00-21swapper/019:33:080
2992023727,0sleep30-21swapper/319:32:433
30053991313,0cyclictest3524-21snmpd00:23:381
300529970,0cyclictest27960-21expr23:18:410
339960,0migration/38113-21kthreadcore00:58:453
339960,0migration/37101-21munin-node00:18:473
339960,0migration/33280-21runrttasks23:22:323
339960,0migration/331664-21sh22:41:503
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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