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2026-10-22 - 19:47
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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 rackcslot4.osadl.org (updated Thu Oct 22, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21903442325284,26sleep00-21swapper/007:06:190
21903932299264,20sleep10-21swapper/107:06:511
23180582570,4sleep10-21swapper/111:03:591
22124832560,3sleep00-21swapper/008:00:230
22131922550,1sleep12213187-21sh08:05:001
23230162530,5sleep12322222-21/usr/sbin/munin11:10:221
136599530,3rtkit-daemon1364-21rtkit-daemon10:30:321
136599500,3rtkit-daemon0-21swapper/110:05:391
22695202480,4sleep00-21swapper/009:50:240
136599450,4rtkit-daemon1364-21rtkit-daemon08:24:411
219081599390,8cyclictest2239856-21diskmemload11:35:201
136599390,6rtkit-daemon2308016-21ssh10:48:530
136599390,4rtkit-daemon1364-21rtkit-daemon10:49:531
136599380,5rtkit-daemon1364-21rtkit-daemon10:25:190
219081599377,9cyclictest26-21ksoftirqd/108:40:201
136599370,3rtkit-daemon0-21swapper/110:50:220
219081599363,22cyclictest26-21ksoftirqd/108:30:021
2190815993616,9cyclictest26-21ksoftirqd/111:45:021
136599360,3rtkit-daemon0-21swapper/109:56:031
219081599356,10cyclictest26-21ksoftirqd/112:30:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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