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2026-07-11 - 03:16
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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 Jul 10, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8644993028,1cyclictest22553-21cron11:05:002
864499300,29cyclictest26712-21cron10:05:012
864499300,29cyclictest2103-21apt-get11:30:102
864499300,29cyclictest20440-21cron12:10:012
864499300,29cyclictest19124-21cron08:40:002
864099300,0cyclictest0-21swapper/110:25:111
863399300,29cyclictest28250-21apt-get07:50:120
8649992927,2cyclictest21489-21perf08:45:003
8649992927,1cyclictest9811-21cron08:20:013
864999290,28cyclictest0-21swapper/312:15:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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