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2026-03-31 - 05:04
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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 10 highest latencies:
System rackeslot3.osadl.org (updated Tue Mar 31, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2392568997340,32cyclictest2484478-21kworker/1:322:20:131
2392568996461,2cyclictest0-21swapper/123:01:401
2392568996343,18cyclictest2399341-21kworker/1:119:30:141
2392568996259,2cyclictest0-21swapper/121:22:581
2392568996145,15cyclictest2405524-21kworker/1:219:55:151
2392568996142,17cyclictest2514485-21kworker/1:122:55:161
2392568996142,17cyclictest2514485-21kworker/1:122:55:161
2392568996043,16cyclictest2425580-21kworker/1:320:54:591
2392568996042,17cyclictest2581039-21kworker/1:000:20:151
2392568995944,14cyclictest2544995-21kworker/1:223:35:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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