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2026-09-11 - 13:11
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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 Sep 11, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3068424341,0sleep20-21swapper/219:29:352
3080223728,0sleep10-21swapper/119:30:581
3067722824,0sleep00-21swapper/019:29:290
3061622723,0sleep30-21swapper/319:28:473
8305060,0irq/26-0000:00:13429-21awk21:12:273
339960,0migration/36665-21sh22:24:293
339960,0migration/35154-21sh22:05:233
339960,0migration/331985-21fschecks_time20:17:393
339960,0migration/330113-21munin-node20:12:463
339960,0migration/330043-21kthreadcore21:42:473
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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