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2025-04-02 - 04:19
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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 rack8slot4.osadl.org (updated Wed Apr 02, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35989712235180,17sleep50-21swapper/519:07:355
35968792224168,17sleep70-21swapper/719:05:207
35989872222170,41sleep30-21swapper/319:07:493
35989402221189,20sleep10-21swapper/119:07:061
35990012216189,17sleep60-21swapper/619:08:006
35989572216186,19sleep00-21swapper/019:07:210
35969232216185,20sleep40-21swapper/419:05:574
35990242214169,15sleep20-21swapper/219:08:202
3599355997119,24cyclictest0-21swapper/723:33:497
36372712550,0sleep60-21swapper/620:21:356
359934199310,3cyclictest3630032-21latency_hist20:05:014
359934199310,30cyclictest3639867-21turbostat.cron20:30:004
3599340993127,3cyclictest3619012-21sh19:45:013
359934099310,30cyclictest3726373-21idleruntime-cro23:35:013
359934099310,29cyclictest3645239-21latency_hist20:40:003
359933799310,30cyclictest3706025-21sh22:50:012
3599335993128,2cyclictest3599754-21apt-get19:11:351
3599330993127,3cyclictest3610935-21sh19:30:010
359935199300,29cyclictest3616310-21cron19:40:016
359935199300,29cyclictest0-21swapper/620:50:006
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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