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2025-09-19 - 07:19
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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 Sep 19, 2025 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1626056997441,31cyclictest1635519-1kworker/1:0H21:30:001
1626056997239,31cyclictest1681355-21kworker/1:122:00:001
1626056997142,27cyclictest1631374-21kworker/1:119:35:151
1626056996841,25cyclictest1714707-21kworker/1:000:15:001
1626057996448,3cyclictest3572569-1kworker/2:1H21:20:142
1626056996461,2cyclictest0-21swapper/120:14:471
1626056996432,30cyclictest1653230-21kworker/1:120:45:151
1626056996432,30cyclictest1635519-1kworker/1:0H23:45:011
1626056996342,20cyclictest1693332-21kworker/1:223:05:161
1626057996246,3cyclictest3572569-1kworker/2:1H19:55:172
1626056996243,18cyclictest1644865-21kworker/1:120:05:181
1626056996143,16cyclictest1659984-21kworker/1:221:15:171
1626056996043,15cyclictest1423251-1kworker/1:1H19:32:111
1626056996042,17cyclictest1423251-1kworker/1:1H19:25:151
1626056996041,18cyclictest1724154-1kworker/1:1H00:25:001
1626056995944,14cyclictest1635519-1kworker/1:0H19:50:131
1626056995943,15cyclictest1693332-21kworker/1:222:55:161
1626056995943,15cyclictest1693332-21kworker/1:222:55:151
1626056995843,14cyclictest1714707-21kworker/1:000:15:181
1626056995843,14cyclictest1704951-21kworker/1:123:31:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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