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2026-09-03 - 12:38
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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 Thu Sep 03, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2156990996559,3cyclictest2194812-21diskmemload22:10:171
215699099650,63cyclictest0-21swapper/100:36:291
2156990996343,18cyclictest2719758-1kworker/1:0H20:44:591
215699099630,61cyclictest0-21swapper/120:10:201
2156990996246,15cyclictest2216013-21kworker/1:021:45:141
2156990996143,16cyclictest2196758-21kworker/1:221:15:181
2156990996142,17cyclictest2188607-21kworker/1:021:05:131
2156990996141,19cyclictest2325128-21kworker/1:023:40:141
2156990996138,22cyclictest2158491-21kworker/1:119:30:131
2156996996043,14cyclictest3683655-1kworker/2:2H21:06:062
2156990996041,17cyclictest2334817-21kworker/1:123:50:141
2156990995942,16cyclictest2168831-21kworker/1:019:45:551
2156990995843,14cyclictest2355539-21kworker/1:200:12:241
2156990995843,14cyclictest2287769-21kworker/1:223:10:011
2156990995843,14cyclictest2265750-21kworker/1:022:46:251
2156990995843,14cyclictest2236544-21kworker/1:322:05:001
2156990995843,14cyclictest2165180-21kworker/1:019:35:521
2156990995842,15cyclictest2350123-21kworker/1:100:08:111
2156990995841,16cyclictest2334817-21kworker/1:123:45:141
2156990995841,16cyclictest2216013-21kworker/1:021:40:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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