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2026-03-10 - 03:55
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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackeslot3.osadl.org (updated Tue Mar 10, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3502458996550,4cyclictest695910-1kworker/0:1H21:35:160
3502462996146,14cyclictest3534429-21kworker/1:221:10:171
3502462996057,2cyclictest0-21swapper/119:53:181
3502462996043,16cyclictest3659054-21kworker/1:323:40:141
3502462996043,16cyclictest3612923-21kworker/1:322:40:121
3502462996043,16cyclictest3604524-21kworker/1:122:27:301
3502462996043,16cyclictest3567778-21kworker/1:122:07:261
3502462996043,16cyclictest3534429-21kworker/1:221:04:541
3502462996043,16cyclictest3534429-21kworker/1:220:55:011
3502462995943,15cyclictest3594369-21kworker/1:022:37:291
3502462995943,15cyclictest3562090-21kworker/1:021:45:011
3502462995943,15cyclictest3516307-21kworker/1:319:58:191
3502462995943,15cyclictest3481508-1kworker/1:0H19:30:141
3502462995942,16cyclictest3562090-21kworker/1:021:40:311
3502462995942,16cyclictest3526972-21kworker/1:120:28:521
3502462995941,17cyclictest3612923-21kworker/1:322:50:141
3502462995941,16cyclictest3626767-21kworker/1:122:55:141
3502462995940,18cyclictest3663977-21kworker/1:023:45:141
3502462995939,18cyclictest3687190-21kworker/1:000:05:161
3502462995842,15cyclictest3600199-21kworker/1:322:23:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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