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2026-08-08 - 11:52
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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 Sat Aug 08, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19076993627,8cyclictest0-21swapper/320:10:123
19071993028,1cyclictest0-21swapper/223:20:022
1906799300,29cyclictest9549-21awk22:15:011
1906799300,29cyclictest21358-21cron19:15:011
1906699300,29cyclictest168272sleep022:30:110
19076992927,1cyclictest621-21dbus-daemon23:20:013
1907699290,29cyclictest0-21swapper/322:30:113
1907699290,28cyclictest24791-21apt-get23:55:023
1907699290,28cyclictest0-21swapper/323:35:123
1907699290,28cyclictest0-21swapper/319:10:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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