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2025-12-21 - 14:40
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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 20 highest latencies:
System rackdslot3.osadl.org (updated Sun Dec 21, 2025 00:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
246982203170,22sleep30-21swapper/319:06:393
247002202169,22sleep00-21swapper/019:06:390
246192201168,22sleep20-21swapper/219:05:382
246182201168,22sleep10-21swapper/119:05:371
268021570,5sleep02525899cyclictest21:45:130
1394918362,11phc2sys0-21swapper/319:10:003
2525999640,25cyclictest6004-21/usr/sbin/munin23:00:251
2525999621,59cyclictest0-21swapper/120:44:531
2525999620,25cyclictest12353-21cat23:10:271
129752600,2sleep00-21swapper/022:05:220
129752600,2sleep00-21swapper/022:05:220
89972590,2sleep30-21swapper/323:05:203
2526199551,52cyclictest2664-21kworker/3:221:50:333
25260995522,7cyclictest33-21ksoftirqd/221:40:002
25260995225,2cyclictest33-21ksoftirqd/219:30:152
25260995220,3cyclictest33-21ksoftirqd/222:00:012
25260995220,3cyclictest33-21ksoftirqd/221:15:252
134391520,6getstats2526199cyclictest23:52:213
25261995145,3cyclictest207-21systemd-journal00:10:003
25260995121,3cyclictest33-21ksoftirqd/220:05:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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