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2026-06-19 - 17:10
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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 Fri Jun 19, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
215789799640,62cyclictest2243956-21fschecks_count10:05:141
2157900996240,11cyclictest3697951-1kworker/2:0H10:55:012
2157897996159,1cyclictest0-21swapper/107:14:491
2157897996159,1cyclictest0-21swapper/107:14:491
2157897996058,1cyclictest0-21swapper/108:55:321
2157897996058,1cyclictest0-21swapper/108:55:321
2157897996043,15cyclictest2196913-1kworker/1:2H11:10:131
2157897996041,18cyclictest2172676-21kworker/1:008:00:211
2157897995944,14cyclictest2309809-21kworker/1:311:24:181
2157897995944,14cyclictest2229286-21kworker/1:009:54:371
2157897995943,15cyclictest2348286-21kworker/1:212:25:061
2157897995943,15cyclictest2277644-21kworker/1:010:54:391
2157900995842,13cyclictest3697951-1kworker/2:0H08:20:152
2157897995856,1cyclictest0-21swapper/109:00:241
2157897995843,14cyclictest2348286-21kworker/1:212:35:081
2157897995843,14cyclictest2342545-21kworker/1:312:09:551
2157897995843,14cyclictest2335631-21kworker/1:112:00:011
2157897995843,14cyclictest2320611-21kworker/1:011:50:141
2157897995843,14cyclictest2302869-21kworker/1:211:25:201
2157897995843,14cyclictest2229286-21kworker/1:009:49:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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