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2026-04-06 - 05:49
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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 Mon Apr 06, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3257424132,0sleep20-21swapper/219:17:132
3261223624,0sleep00-21swapper/019:17:430
3260823525,0sleep10-21swapper/119:17:401
3256523324,0sleep30-21swapper/319:17:063
373991010,0cyclictest0-21swapper/221:20:262
8305060,0irq/26-0000:00:6379-21awk22:49:302
3739960,0cyclictest0-21swapper/223:23:282
3689960,0cyclictest0-21swapper/122:16:331
339960,0migration/34774-21sh21:31:313
339960,0migration/33635-21sh23:42:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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