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2024-09-20 - 00:01
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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 Thu Sep 19, 2024 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
265399300,29cyclictest15192-21apt-get12:10:133
265399300,29cyclictest0-21swapper/312:15:123
2647993028,1cyclictest26550-21awk12:35:012
2647993028,1cyclictest0-21swapper/212:30:012
264599300,2cyclictest21963-21sh07:50:001
264599300,29cyclictest20174-21apt-get08:55:101
2653992927,1cyclictest26544-21cron12:35:003
265399290,28cyclictest25396-21apt-get10:15:103
265399290,28cyclictest0-21swapper/310:10:013
2647992927,1cyclictest0-21swapper/211:35:012
264799290,28cyclictest8807-21apt-get09:40:122
264799290,28cyclictest14841-21apt-get07:35:132
264599290,28cyclictest0-21swapper/110:00:001
264499290,28cyclictest22247-21apt-get07:50:120
264499290,1cyclictest17225-21cron12:15:010
2653992826,1cyclictest31575-21perf09:20:003
265399280,1cyclictest23697-21munin-run11:20:013
265399280,1cyclictest0-21swapper/308:50:113
265399280,0cyclictest7867-21apt-get07:20:103
265399280,0cyclictest0-21swapper/309:40:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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