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2024-12-26 - 13:18
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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 10 highest latencies:
System rack3slot6.osadl.org (updated Thu Dec 26, 2024 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
462521080,5sleep04628-21grep19:30:350
2787929319,27sleep00-21swapper/019:07:180
28323997038,26cyclictest14-21ksoftirqd/022:58:180
2833099695,40cyclictest8814-21/usr/sbin/munin19:45:121
28330996939,15cyclictest16234-21apt-get21:40:111
2772226819,39sleep10-21swapper/119:05:381
28330996733,24cyclictest14059-21apt-get20:00:141
28330996636,22cyclictest22826-21apt-get20:25:131
28330996634,16cyclictest15944-21apt-get23:30:091
28330996537,15cyclictest13586-21apt-get23:20:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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