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2026-05-10 - 18:58
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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 Sun May 10, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
732424636,0sleep30-21swapper/307:17:313
1422123723,0sleep00-21swapper/007:22:120
1409123627,0sleep20-21swapper/207:20:422
1386023223,0sleep10-21swapper/107:18:011
339960,0migration/38426-21munin-node09:27:403
339960,0migration/3836-21sh09:24:473
339960,0migration/34380-21sh11:00:193
339960,0migration/331142-21sh11:32:393
339960,0migration/317135-21sh10:30:163
339960,0migration/315992-21munin-node08:52:353
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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