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2026-06-23 - 18:25
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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 rackdslot4.osadl.org (updated Tue Jun 23, 2026 12:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591206172,23phc2sys0-21swapper/307:06:373
158042205171,23sleep00-21swapper/007:07:270
158102200167,22sleep10-21swapper/107:07:321
137892200167,22sleep20-21swapper/207:05:082
1431921470,5sleep31630499cyclictest11:25:173
263142770,2sleep20-21swapper/209:40:122
138491610,1ptp4l401ktimersoftd/307:10:173
76892590,2sleep00-21swapper/007:55:240
316962550,2sleep30-21swapper/310:55:163
138491550,1ptp4l401ktimersoftd/310:29:173
252812530,2sleep10-21swapper/111:45:281
29772520,3sleep22980-21unixbench_multi07:45:282
1630299501,46cyclictest14701-21ps12:30:241
1630299501,46cyclictest14701-21ps12:30:241
16302994930,17cyclictest25-21ksoftirqd/112:17:371
1630499462,42cyclictest24301-21kworker/3:111:51:533
16302994639,4cyclictest15778-21sh08:15:011
16302994516,27cyclictest0-21swapper/109:50:241
16302994516,27cyclictest0-21swapper/109:50:231
16304994338,3cyclictest8539-21turbostat09:04:593
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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