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2026-09-02 - 11:38
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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackeslot3.osadl.org (updated Wed Sep 02, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
159529899661,2cyclictest0-21swapper/119:36:461
159529899651,63cyclictest0-21swapper/119:53:031
159529899650,12cyclictest1807176-21fschecks_count00:20:141
1595298996341,20cyclictest1662169-21kworker/1:121:55:151
159529899630,1cyclictest0-21swapper/120:00:571
1595298996259,2cyclictest0-21swapper/123:42:331
1595298996241,19cyclictest1651413-21kworker/1:121:30:141
1595298996145,15cyclictest1195930-1kworker/1:2H19:20:141
1595298996139,20cyclictest1685378-21kworker/1:122:20:081
1595298996044,15cyclictest1195930-1kworker/1:2H20:51:021
1595298996042,17cyclictest1764722-21kworker/1:023:35:131
1595298995944,14cyclictest1625287-21kworker/1:221:10:151
1595298995943,15cyclictest1695066-21kworker/1:022:25:181
1595298995942,16cyclictest1662169-21kworker/1:121:45:071
1595298995942,16cyclictest1609837-21kworker/1:019:55:181
1595298995942,16cyclictest1195930-1kworker/1:2H00:06:581
1595298995941,17cyclictest1595130-21kworker/1:019:10:161
159529899590,57cyclictest0-21swapper/123:05:421
1595298995843,14cyclictest1745335-21kworker/1:223:15:001
1595298995843,14cyclictest1714910-21kworker/1:122:50:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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