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2025-12-13 - 13:00
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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 Dec 13, 2025 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2216816995046,3cyclictest2313287-21kworker/1:300:15:101
2216816994944,4cyclictest2265953-21kworker/1:022:00:101
2216816994944,4cyclictest2265953-21kworker/1:021:55:111
2216816994940,8cyclictest2276737-21kworker/1:122:20:121
2216821994845,2cyclictest279-1kworker/2:3H19:14:012
2216816994642,3cyclictest2265953-21kworker/1:022:05:121
2216816994637,8cyclictest2297383-21kworker/1:323:30:101
2216816994637,7cyclictest2239236-21kworker/1:020:25:131
2216816994636,9cyclictest2229989-21kworker/1:020:00:151
2216821994540,3cyclictest279-1kworker/2:3H20:07:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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