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2026-08-17 - 21:05
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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 Mon Aug 17, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
189455821290,2sleep30-21swapper/311:25:023
197676721010,3sleep10-21swapper/112:20:111
16131082980,2sleep11613102-21awk08:05:011
20034892950,2sleep30-21swapper/312:35:203
1549182992421,2cyclictest1752336-21sh09:50:011
1549181992421,2cyclictest1745070-21sh09:45:020
3240591231,4phc2sys0-21swapper/309:04:513
3240591231,4phc2sys0-21swapper/309:04:513
1549183992316,3cyclictest0-21swapper/208:09:522
1549181992314,8cyclictest1720611-21unixbench_singl09:25:220
1549182992216,2cyclictest69250irq/121-eno110:20:141
1549181992213,5cyclictest1834376-21runrttasks10:44:050
1549182992119,1cyclictest501rcuop/211:48:021
1549182992118,2cyclictest664-21dbus-daemon12:20:021
1549182992118,2cyclictest1564340-21idleruntime-cro07:25:001
1549182992117,3cyclictest1738519-21gltestperf09:40:151
154918199218,7cyclictest0-21swapper/010:34:530
1549181992118,2cyclictest1812639-21munin-plugin-st10:30:010
1549181992115,5cyclictest0-21swapper/008:25:030
1549183992017,1cyclictest0-21swapper/211:20:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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