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2026-08-08 - 07:47
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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 Sat Aug 08, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
780424938,0sleep00-21swapper/019:29:000
773224838,0sleep30-21swapper/319:28:073
754224132,0sleep10-21swapper/119:25:571
760223727,0sleep20-21swapper/219:26:382
7932991818,0cyclictest3524-21snmpd00:51:001
7932991212,0cyclictest3524-21snmpd19:29:531
8305060,0irq/26-0000:00:30982-21munin-run23:29:402
79319960,0cyclictest0-21swapper/000:15:080
339960,0migration/39650-21sh00:10:583
339960,0migration/329483-21sh21:52:413
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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