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2024-07-27 - 03:59
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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 rackcslot4.osadl.org (updated Fri Jul 26, 2024 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40236672273195,28sleep00-21swapper/007:06:530
40236042256181,60sleep10-21swapper/107:06:141
173382590,5sleep00-21swapper/012:18:320
40752242570,4sleep00-21swapper/009:12:290
4024074995614,23cyclictest28994-21apt-get12:35:101
4024074995514,22cyclictest4084460-21apt-get09:25:131
402407499549,11cyclictest21511-21munin-run12:25:001
4024074995311,13cyclictest4040641-21/usr/sbin/munin07:50:011
4024074995210,13cyclictest4124564-21dpkg10:20:021
40341942510,3sleep14032934-21/usr/sbin/munin07:30:281
4024074995113,12cyclictest4153791-21apt-get11:00:131
4024074995110,12cyclictest4157709-21apt-get11:05:141
4024074995016,13cyclictest4031489-21cat07:25:181
402407099508,23cyclictest4080853-21apt-get09:20:130
4024074994910,21cyclictest4091758-21apt-get09:35:111
4024074994910,13cyclictest4150122-21apt-get10:55:101
402407099499,21cyclictest21745-21apt-get12:25:110
402407099499,21cyclictest21745-21apt-get12:25:110
4024074994812,20cyclictest4128182-21apt-get10:25:101
4024074994811,11cyclictest4050961-21apt-get08:15:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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