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2026-07-04 - 06:59
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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 20 highest latencies:
System rackeslot2.osadl.org (updated Sat Jul 04, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
95752321610,2sleep30-21swapper/321:34:553
118853221140,2sleep30-21swapper/300:10:013
10794762960,4sleep11079306-21ssh22:59:451
9234942270,2sleep30-21swapper/321:14:463
773378992622,2cyclictest836314-21sh20:00:001
773379992522,1cyclictest0-21swapper/222:40:012
773378992522,2cyclictest943493-21grep21:25:021
773377992511,5cyclictest1074338-21kthreadcore22:54:510
773378992421,2cyclictest988025-21grep21:55:021
773378992219,2cyclictest660-21dbus-daemon00:25:011
773378992218,3cyclictest973172-21munin-run21:45:001
773377992213,7cyclictest0-21swapper/000:30:020
773378992119,1cyclictest1151400-21grep23:45:021
773378992117,2cyclictest0-21swapper/123:55:031
773377992114,6cyclictest0-21swapper/022:25:020
77337899201,3cyclictest897331-21munin-run20:50:011
773377992014,5cyclictest660-21dbus-daemon20:15:010
773377992014,5cyclictest1232785-21apt-get00:40:020
773377992013,6cyclictest997768-21fschecks_time22:04:480
773377992010,6cyclictest0-21swapper/022:29:510
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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