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2026-04-15 - 14:28
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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 Wed Apr 15, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3194799300,29cyclictest621-21dbus-daemon19:55:013
31942993028,1cyclictest621-21dbus-daemon20:20:012
31933993028,1cyclictest8472-21munin-run21:45:020
31933993027,2cyclictest13743-21sh19:40:000
3193399300,29cyclictest20771-21sh19:55:010
3194299290,28cyclictest4165-21munin-run19:20:012
3194299290,28cyclictest0-21swapper/220:20:122
3194299290,1cyclictest22706-21apt-get23:25:022
3193899290,28cyclictest0-21swapper/120:55:121
3193399290,28cyclictest25934-21apt-get00:40:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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