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2025-11-05 - 00:03
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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 Tue Nov 04, 2025 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16407212712,84sleep116439-21munin-run07:08:511
16540991253,90cyclictest10981-21apt-get11:44:061
16540991162,95cyclictest29463-21apt-get11:19:191
16540991103,69cyclictest19349-21apt-get11:59:051
165369910843,19cyclictest0-21swapper/009:39:020
165369910843,19cyclictest0-21swapper/009:39:020
165369910542,18cyclictest19617-21/usr/sbin/munin08:54:260
165369910542,18cyclictest19617-21/usr/sbin/munin08:54:260
165369910443,24cyclictest24401-21unixbench_multi10:09:280
165369910443,24cyclictest24401-21unixbench_multi10:09:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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