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2024-04-16 - 16:21
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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 Tue Apr 16, 2024 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37394482264179,28sleep00-21swapper/007:06:010
37395512256182,59sleep10-21swapper/107:07:091
373994899125119,4cyclictest3731128-21kworker/u8:307:36:241
37765762600,4sleep03776020-21/usr/sbin/munin08:40:320
159199560,4rtkit-daemon1590-21rtkit-daemon07:57:201
159199540,4rtkit-daemon1590-21rtkit-daemon11:42:420
159199520,4rtkit-daemon1590-21rtkit-daemon10:36:030
159199520,4rtkit-daemon1590-21rtkit-daemon10:24:091
159199500,4rtkit-daemon1590-21rtkit-daemon07:43:531
159199500,3rtkit-daemon1590-21rtkit-daemon12:06:401
159199500,3rtkit-daemon1590-21rtkit-daemon08:34:101
3739948994913,17cyclictest3804119-21chrt09:31:491
39014982480,7sleep00-21swapper/011:50:300
3739948994811,11cyclictest3865471-21apt-get11:00:101
159199480,3rtkit-daemon1590-21rtkit-daemon08:22:210
3739948994715,14cyclictest3871722-21chrt11:07:511
3739948994715,14cyclictest3855981-21ntp_offset10:45:201
3739948994712,20cyclictest3906956-21apt-get12:00:121
159199470,4rtkit-daemon1590-21rtkit-daemon10:57:531
3739948994611,19cyclictest3903454-21apt-get11:55:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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