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2025-11-29 - 20:44
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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 Sat Nov 29, 2025 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
166891999650,3cyclictest0-21swapper/109:23:551
1668919996145,15cyclictest1711274-21kworker/1:209:25:141
1668919996057,2cyclictest0-21swapper/111:39:321
1668919996042,16cyclictest1675812-21kworker/1:107:30:141
1668919996042,16cyclictest1675812-21kworker/1:107:30:141
1668919995841,16cyclictest1692570-21kworker/1:208:40:001
1668919995840,17cyclictest1667266-21kworker/1:207:15:011
1668919995839,18cyclictest1711274-21kworker/1:209:40:141
166891999580,1cyclictest0-21swapper/108:18:321
1668919995743,14cyclictest1667266-21kworker/1:207:24:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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