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2026-09-07 - 15:58
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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 rack0slot2.osadl.org (updated Mon Sep 07, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6357521010,1sleep763577-21sh11:24:357
40423992980,1sleep74042401-21cut09:59:327
367995425746,8sleep50-21swapper/507:06:395
36794872443,30sleep70-21swapper/707:04:487
368008624332,8sleep60-21swapper/607:08:326
368003724331,8sleep40-21swapper/407:07:504
3680417994037,2cyclictest4101464-21kworker/u16:3+events_unbound10:59:295
3680418993937,2cyclictest17128-21kworker/u16:2+events_unbound12:17:056
3680417993937,2cyclictest3907092-21kworker/u16:1+events_unbound09:13:585
3680419993834,3cyclictest126-21kswapd011:06:307
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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