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2026-05-01 - 18:20
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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 rackfslot7.osadl.org (updated Fri May 01, 2026 12:46:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3477252996748,1cyclictest601ktimers/409:16:114
3477252995756,1cyclictest601ktimers/409:21:414
3477252995636,19cyclictest1-21systemd11:35:114
3477252995633,19cyclictest0-21swapper/409:35:334
3477252995615,40cyclictest3540552-21hostname09:05:134
3477252995534,20cyclictest3597509-21latency_hist10:50:004
3477252995533,19cyclictest601ktimers/410:43:134
3477252995533,19cyclictest0-21swapper/412:12:294
3477252995519,36cyclictest0-21swapper/411:07:234
3477252995516,38cyclictest3644141-21cron12:19:554
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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