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2024-11-22 - 16:35
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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 Fri Nov 22, 2024 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36862202229175,43sleep60-21swapper/607:08:446
36841342228170,19sleep70-21swapper/707:06:367
36862922226171,18sleep40-21swapper/407:09:474
36840642219188,19sleep50-21swapper/507:05:385
36841392212181,19sleep30-21swapper/307:06:403
36862612211184,17sleep20-21swapper/207:09:212
36861662210181,18sleep00-21swapper/007:07:580
36863102207175,21sleep10-21swapper/107:10:001
368652299579,24cyclictest0-21swapper/509:27:035
3686524993532,2cyclictest3703250-21sh07:40:016
368650799320,31cyclictest3796959-21debian-sa110:35:011
3686524993127,3cyclictest1609929-21systemd-journal08:55:016
3686524993125,2cyclictest0-21swapper/609:00:016
3686522993130,1cyclictest681ktimers/508:56:515
368652299310,3cyclictest3799649-21turbostat.cron10:40:015
368651899310,30cyclictest1609929-21systemd-journal07:45:014
3686528993027,2cyclictest3818762-21sh11:15:027
368652899300,29cyclictest3714589-21apt-get08:01:507
368652499300,29cyclictest3860236-21apt-get12:31:556
368652299300,29cyclictest3774633-21sh09:55:015
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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