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2026-03-09 - 16:47
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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 Mon Mar 09, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19778993028,1cyclictest0-21swapper/307:20:003
1977899300,29cyclictest8873-21plymouth11:20:003
19776993027,2cyclictest25891-21cron08:30:002
1977899290,28cyclictest0-21swapper/310:15:123
1977699290,1cyclictest0-21swapper/207:45:012
19775992927,2cyclictest10650-21taskset10:15:121
1977599290,28cyclictest4762-21apt-get12:20:131
1977599290,28cyclictest20272-21apt-get10:35:111
1977599290,28cyclictest0-21swapper/108:00:141
1977599290,1cyclictest0-21swapper/111:25:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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