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2025-02-09 - 08:17
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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 Sun Feb 09, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36856632237184,42sleep10-21swapper/119:07:201
36857812236174,20sleep50-21swapper/519:09:015
36857732221186,22sleep70-21swapper/719:08:557
36858162220166,18sleep20-21swapper/219:09:302
36857992220167,41sleep30-21swapper/319:09:153
36856572220188,20sleep40-21swapper/419:07:154
36836682217187,19sleep00-21swapper/019:06:310
36835822211178,21sleep60-21swapper/619:05:166
368605899320,30cyclictest3689171-21gdbus19:15:014
368604999310,1cyclictest0-21swapper/200:21:412
3686047993127,3cyclictest3829131-21latency_hist00:00:011
368606999300,29cyclictest3799415-21sh22:55:007
368606999300,29cyclictest0-21swapper/723:31:367
368606799300,2cyclictest3822738-21sh23:45:016
368606299300,29cyclictest496438-21systemd-journal20:00:015
368606299300,29cyclictest3688626-21apt19:15:015
368605899300,2cyclictest3770022-21apt-config21:50:014
3686053993028,1cyclictest0-21swapper/323:56:423
368605399300,2cyclictest3746894-21apt21:00:013
368605399300,29cyclictest3813943-21awk23:25:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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