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2024-11-22 - 16:36
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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 rackeslot5.osadl.org (updated Fri Nov 22, 2024 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29527993533,1cyclictest609-21dbus-daemon11:40:013
2952799300,29cyclictest626-21gdbus09:50:003
2952199300,29cyclictest4347-21apt-get07:25:111
2952199300,29cyclictest0-21swapper/112:20:001
2952799290,28cyclictest0-21swapper/311:50:003
2952799290,28cyclictest0-21swapper/310:05:093
2952299290,28cyclictest18103-21apt-get10:15:122
2952299290,28cyclictest0-21swapper/209:30:142
2952299290,28cyclictest0-21swapper/209:00:112
2952299290,1cyclictest28094-21cron08:15:002
29521992927,1cyclictest5575-21perf09:45:001
29521992927,1cyclictest22534-21cron10:25:001
29521992927,1cyclictest13813-21munin-run07:45:011
29521992926,2cyclictest16908-21cron12:30:001
2951899290,28cyclictest28378-21apt-get08:15:130
2951899290,28cyclictest27557-21perf10:35:010
2951899290,1cyclictest11136-21apt-get10:00:120
29527992828,0cyclictest0-21swapper/308:20:143
2952799280,1cyclictest0-21swapper/312:35:133
2952799280,0cyclictest18715-21apt-get07:55:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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