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2024-07-27 - 03:47
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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 rack3slot6.osadl.org (updated Sat Jul 27, 2024 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
794321230,4chrt7941-21df23:45:170
1048821180,4chrt10483-21unixbench_singl23:50:330
205772900,4chrt20112-21apt-get00:20:140
374499828,62cyclictest3822-21apt-get19:10:120
374499827,63cyclictest22355-21apt-get00:25:110
374499807,62cyclictest24694-21apt-get20:05:160
374499797,61cyclictest3686-21apt-get22:05:150
374499796,62cyclictest3060-21apt-get20:35:110
374499787,60cyclictest22900-21apt-get21:30:160
374499787,59cyclictest31915-21apt-get20:25:120
374499786,61cyclictest1270-21apt-get20:30:130
374499777,60cyclictest7906-21apt-get19:20:120
374499777,58cyclictest22010-21apt-get22:55:150
374499777,58cyclictest16339-21apt-get22:40:110
374499773,69cyclictest21149-21/usr/sbin/munin22:50:310
268682770,4chrt26847-21apt-get21:40:190
128602770,5chrt12861-21sendmail00:00:000
374499768,57cyclictest6096-21apt-get19:15:130
374499757,57cyclictest26532-21apt-get20:10:110
374499757,57cyclictest19003-21apt-get19:50:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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