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2026-07-04 - 03:09
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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 rackfslot7.osadl.org (updated Fri Jul 03, 2026 12:46:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3289369991070,105cyclictest0-21swapper/407:45:134
3289369997738,1cyclictest875-21mta-sts-daemon11:05:224
3289369997618,39cyclictest3366396-21chrt09:30:104
3289369997315,39cyclictest3453899-21grep12:05:264
3289369997315,39cyclictest3384257-21awk10:00:204
328936999668,39cyclictest3470924-21latency_hist12:40:024
3289369996124,19cyclictest990544-21munin-node08:19:544
3289369996018,19cyclictest3391308-21munin-run10:15:024
3289369995719,19cyclictest3397982-21memory10:25:224
3289369995616,39cyclictest3291142-21awk07:10:244
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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