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2026-03-12 - 17:07
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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 Thu Mar 12, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1884199300,2cyclictest6792-21cron10:10:002
18839993028,1cyclictest25476-21awk10:50:010
1884399290,1cyclictest20284-21sh09:30:013
1884399290,1cyclictest20284-21sh09:30:013
1884199290,28cyclictest32744-21apt-get11:05:122
18840992927,1cyclictest3982-21apt-get07:45:121
1884099290,28cyclictest11480-21munin-run10:20:011
1883999290,28cyclictest0-21swapper/012:05:020
1883999290,28cyclictest0-21swapper/010:00:110
1883999290,28cyclictest0-21swapper/009:25:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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