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2026-01-07 - 15:18
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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 rack3slot6.osadl.org (updated Wed Jan 07, 2026 12:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
294052920,5chrt29298-21/usr/sbin/munin08:05:141
871499896,68cyclictest8797-21apt-get07:10:150
8714998914,60cyclictest0-21swapper/011:25:140
871499886,66cyclictest27568-21apt-get08:00:140
8714998815,60cyclictest0-21swapper/012:30:140
8714998716,57cyclictest0-21swapper/009:00:120
8714998715,61cyclictest0-21swapper/009:40:150
8714998714,68cyclictest19352-31find07:36:270
8714998714,61cyclictest0-21swapper/008:45:110
871499866,69cyclictest18226-21apt-get09:05:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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