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2026-05-15 - 03:51
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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 May 15, 2026 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2457299300,29cyclictest30995-21cron00:00:011
2457099300,29cyclictest27591-21cron21:34:590
2457799290,28cyclictest13374-21apt-get19:55:123
2457799290,28cyclictest0-21swapper/323:10:013
2457799290,28cyclictest0-21swapper/300:05:163
2457799290,1cyclictest13115-21munin-run19:55:003
24572992928,1cyclictest26115-21apt-get22:40:121
2457299290,28cyclictest29427-21awk20:30:011
2457299290,28cyclictest21697-21sendmail-msp23:40:021
2457299290,28cyclictest0-21swapper/123:00:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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