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2026-05-06 - 10:55
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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 Wed May 06, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
70232202169,22sleep20-21swapper/219:09:052
69962202169,22sleep00-21swapper/019:08:430
68202202169,22sleep30-21swapper/319:07:093
70172197162,23sleep10-21swapper/119:09:001
2433521700,5sleep1738799cyclictest00:10:251
62562650,6sleep1738799cyclictest22:25:271
139391630,0ptp4l401ktimersoftd/321:55:113
270542610,7sleep3738999cyclictest20:55:243
7388995713,15cyclictest20199-21/usr/sbin/munin00:05:152
137642570,2sleep00-21swapper/020:30:140
7386994842,3cyclictest4093-21cron22:25:000
139391450,1ptp4l0-21swapper/322:52:493
139391420,0ptp4l401ktimersoftd/319:25:233
738899410,3cyclictest12721-21taskset23:48:292
57898410,2rtkit-daemon0-21swapper/121:05:391
139391410,1ptp4l0-21swapper/319:47:153
139391410,1ptp4l0-21swapper/319:47:153
139391410,0ptp4l401ktimersoftd/322:15:293
7389994028,9cyclictest41-21ksoftirqd/323:12:493
7387994035,3cyclictest25-21ksoftirqd/121:39:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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