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2026-05-19 - 04:37
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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 May 19, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
387297099640,2cyclictest0-21swapper/100:17:291
3872970996341,20cyclictest4054041-21kworker/1:123:45:171
3872975996248,11cyclictest3655225-1kworker/3:2H23:00:153
3872970996043,16cyclictest3941990-21kworker/1:021:50:001
3872970996040,18cyclictest3977918-21kworker/1:122:35:141
3872970995942,16cyclictest3896258-21kworker/1:020:30:131
3872970995929,29cyclictest4004255-21kworker/1:122:55:161
3872970995929,29cyclictest3958395-21kworker/1:122:15:151
3872970995843,14cyclictest3983050-21kworker/1:022:30:151
3872970995843,14cyclictest3973073-21kworker/1:222:20:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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