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2024-11-22 - 10:10
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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 rackeslot5.osadl.org (updated Fri Nov 22, 2024 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2003599310,30cyclictest10912-21sendmail20:00:010
20045993028,1cyclictest27262-21apt20:34:593
20045993028,1cyclictest20492-21apt-get23:50:093
2004599300,29cyclictest4217-21apt-get19:45:143
20042993027,2cyclictest9701-21idleruntime-cro22:15:002
2003599300,29cyclictest303-21systemd-journal19:20:010
20045992927,1cyclictest609-21dbus-daemon22:20:003
20045992927,1cyclictest4592-21apt-get00:25:023
20045992926,2cyclictest303-21systemd-journal22:10:003
2004299290,28cyclictest7781-21apt-get00:30:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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