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2025-11-19 - 01:23
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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 rack1slot8.osadl.org (updated Tue Nov 18, 2025 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30612856838,12sleep10-21swapper/107:07:271
3350996135,600cyclictest0-21swapper/007:12:200
335199402291,69cyclictest0-21swapper/107:12:201
1343121070,4sleep013430-21grep10:55:270
216899920,11rtkit-daemon0-21swapper/109:38:541
3350998913,60cyclictest0-21swapper/007:31:590
335099875,21cyclictest0-21swapper/009:23:590
3350998561,10cyclictest0-21swapper/009:54:590
216899850,3rtkit-daemon15565-21ssh11:55:161
335099845,26cyclictest0-21swapper/012:33:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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