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2026-06-22 - 10:25
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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 Mon Jun 22, 2026 00:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3233321240,6chrt31481-21/usr/sbin/munin21:05:351
3233321240,6chrt31481-21/usr/sbin/munin21:05:351
221119910713,18cyclictest0-21swapper/023:05:130
22111999812,47cyclictest0-21swapper/023:15:120
2192029715,38sleep00-21swapper/019:09:250
22111999064,13cyclictest14-21ksoftirqd/023:55:130
22111999062,18cyclictest14-21ksoftirqd/020:55:130
264762880,5chrt0-21swapper/122:20:241
22111998865,12cyclictest14-21ksoftirqd/020:35:210
22111998658,18cyclictest14-21ksoftirqd/023:20:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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