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2026-06-10 - 07:54
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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 Jun 10, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2691223826,0sleep20-21swapper/219:24:232
2600623627,0sleep30-21swapper/319:20:123
2665823525,0sleep10-21swapper/119:21:261
2667723228,0sleep00-21swapper/019:21:410
169970,0watchdog/10-21swapper/121:38:571
339960,0migration/332490-21fschecks_time23:50:043
339960,0migration/320352-21taskset23:24:433
339960,0migration/317823-21sh00:17:153
339960,0migration/316964-21munin-node00:00:033
339960,0migration/314580-21sh00:54:453
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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