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2026-06-27 - 16:01
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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 10 highest latencies:
System rackdslot1.osadl.org (updated Sat Jun 27, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2863821720,6sleep11558399cyclictest12:15:191
2745221710,3sleep31558599cyclictest07:35:153
788621330,5sleep31558599cyclictest10:20:193
134491670,4ptp4l2260-21apt-get10:10:122
15583996613,12cyclictest10713-21chrt08:07:351
1558399617,11cyclictest15626-21grep07:10:151
15583996117,41cyclictest19533-21/usr/sbin/munin11:55:211
175252600,5sleep20-21swapper/209:30:232
1558399596,10cyclictest28475-21tr07:35:271
134491590,3ptp4l0-21swapper/112:25:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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