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2026-05-02 - 19:40
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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
Characteristics of the 10 highest latencies:
System rackcslot4.osadl.org (updated Sat May 02, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
312147723730,7sleep1251rcuc/107:05:221
31223172267206,47sleep00-21swapper/007:05:430
328653221420,3sleep10-21swapper/111:40:251
179699640,3rtkit-daemon1795-21rtkit-daemon09:32:510
32174462500,3sleep03216905-21apt-get10:10:020
31253942500,6sleep1251rcuc/107:15:041
33180182420,2sleep00-21swapper/012:23:350
179699410,5rtkit-daemon0-21swapper/009:44:380
179699390,23rtkit-daemon3250526-21chrt10:52:550
312284199380,4cyclictest3178829-21sendmail09:20:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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