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2026-09-20 - 22:32
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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 rack5slot2.osadl.org (updated Sun Sep 20, 2026 12:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
297292197183,10sleep10-21swapper/107:07:391
297042187148,14sleep30-21swapper/307:07:223
295792176158,13sleep00-21swapper/007:05:420
29755211294,13sleep20-21swapper/207:08:012
193932540,0sleep00-21swapper/011:16:590
112432430,0sleep10-21swapper/112:35:151
113772380,0sleep10-21swapper/109:51:011
18263290,0sleep20-21swapper/209:38:412
300969982,3cyclictest10701-21awk07:35:000
300969971,3cyclictest3298-21perf07:20:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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