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2025-12-11 - 06:06
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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 rackbslot7.osadl.org (updated Thu Dec 11, 2025 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2656625850,8sleep30-21swapper/319:08:123
2509121539,25sleep00-21swapper/019:03:290
26548991233,81cyclictest1497-21apt-get21:08:450
26548991182,27cyclictest27584-21/usr/sbin/munin23:43:400
26548991179,75cyclictest0-21swapper/022:38:110
265489911436,64cyclictest0-21swapper/000:23:200
26548991142,25cyclictest11566-21ssh00:13:060
25286211311,71sleep225292-21/usr/sbin/munin19:04:042
26548991123,28cyclictest10763-21latency_hist19:58:110
26548991112,25cyclictest4687-21ssh23:59:490
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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