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2026-04-01 - 14:56
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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 rackbslot7.osadl.org (updated Wed Apr 01, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21161211421,50sleep10-21swapper/106:59:171
21161211421,50sleep10-21swapper/106:59:171
22805991093,68cyclictest2113-21apt-get10:04:211
22805999242,13cyclictest181rcu_preempt10:29:411
22789999165,18cyclictest14441-21kworker/u19:2-rpciod12:29:380
22789999117,37cyclictest15-21ksoftirqd/009:35:130
22789999117,37cyclictest15-21ksoftirqd/009:35:130
22789999117,37cyclictest15-21ksoftirqd/009:35:130
22816999037,14cyclictest0-21swapper/209:16:212
2280599876,49cyclictest29554-21apt-get10:49:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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