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2024-06-25 - 11:33
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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 rack4slot6.osadl.org (updated Tue Jun 25, 2024 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14588521180,115pltrace0-21swapper/219:09:512
11800521120,104pltrace0-21swapper/619:08:136
11800521060,98pltrace0-21swapper/519:06:265
11800521010,52pltrace0-21swapper/719:05:157
1180052990,89pltrace0-21swapper/119:05:161
1180052980,94pltrace0-21swapper/319:05:153
1445727141,10sleep40-21swapper/419:07:344
1453725945,10sleep00-21swapper/019:08:430
1206252340,5pltrace0-21swapper/721:00:127
1606152270,4pltrace0-21swapper/722:05:107
1483799251,16cyclictest0-21swapper/020:16:500
1485399200,2cyclictest0-21swapper/422:33:164
2215752190,3pltrace0-21swapper/720:20:267
2102852190,11pltrace0-21swapper/500:14:005
596052180,13pltrace6402-21/usr/sbin/munin22:45:205
261452180,13pltrace4199-21latency19:45:192
704552170,3pltrace0-21swapper/723:46:367
648652170,0pltrace0-21swapper/720:53:277
1884652170,12pltrace54-21ksoftirqd/422:10:454
1486599171,8cyclictest0-21swapper/720:27:477
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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