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2026-04-30 - 22:21
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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 50 highest latencies:
System rackeslot2.osadl.org (updated Thu Apr 30, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
378652921030,2sleep30-21swapper/309:55:373
36622872280,2sleep0171ktimers/008:25:000
3565457992516,4cyclictest0-21swapper/109:45:381
3565456992522,2cyclictest3803985-21unin-run10:10:010
3565457992421,2cyclictest1326-21systemd-logind12:30:001
39520012230,2sleep30-21swapper/311:45:363
383433398230,5rtkit-daemon3851704-21mta-sts-daemon12:21:381
37587952230,2sleep13758726-21ssh09:40:001
3565458992320,2cyclictest0-21swapper/208:10:022
3565457992316,6cyclictest1-21systemd09:20:011
3565456992320,2cyclictest3571795-21missed_timers07:15:010
3565456992320,2cyclictest3571795-21missed_timers07:15:010
3565456992320,2cyclictest1290-21dbus-daemon09:15:000
356545899221,4cyclictest0-21swapper/208:50:012
3565457992219,2cyclictest3781472-21systemd09:55:011
3565457992219,2cyclictest1290-21dbus-daemon12:05:001
3565456992219,2cyclictest3952751-21ntpd10:14:130
3565456992219,2cyclictest3729023-21grep09:20:020
3565456992212,5cyclictest0-21swapper/011:55:020
38730952210,2sleep30-21swapper/310:55:023
3565458992118,1cyclictest0-21swapper/210:44:322
3565458992113,6cyclictest0-21swapper/209:39:552
3565458992113,1cyclictest0-21swapper/211:10:002
3565457992114,3cyclictest3799796-21kthreadcore10:05:521
3565456992113,1cyclictest3993836-21ssh12:15:250
3565456992110,6cyclictest0-21swapper/010:55:020
2649191210,1ptp4l0-21swapper/310:25:303
37368952200,2sleep20-21swapper/209:25:302
3565458992017,1cyclictest0-21swapper/211:45:002
3565458992014,4cyclictest0-21swapper/212:35:012
3565458992013,3cyclictest0-21swapper/210:40:012
356545799201,7cyclictest3606043-21apt-get07:40:291
3565457992013,3cyclictest3732226-21kthreadcore09:20:431
3565457992013,3cyclictest0-21swapper/111:50:021
3565457992011,3cyclictest0-21swapper/112:10:291
356545699209,6cyclictest0-21swapper/010:55:290
3565456992017,2cyclictest3694368-21idleruntime-cro08:55:000
3565456992017,2cyclictest1290-21dbus-daemon08:00:010
3565456992010,6cyclictest3934557-21irqcore11:35:350
3565456992010,2cyclictest4001688-21ssh12:20:260
383433398190,3rtkit-daemon3851704-21mta-sts-daemon08:44:500
3565458991917,1cyclictest0-21swapper/212:00:022
3565458991916,1cyclictest0-21swapper/209:35:002
3565458991915,2cyclictest0-21swapper/212:20:402
3565458991912,1cyclictest0-21swapper/210:20:012
3565458991911,1cyclictest0-21swapper/207:45:002
356545899190,5cyclictest0-21swapper/211:20:012
3565457991916,2cyclictest3721424-21latency_hist09:15:021
3565457991913,2cyclictest17350irq/127-ahci[0000:00:17.0]10:25:001
3565456991915,3cyclictest1-21systemd11:20:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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