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2026-06-27 - 01:42
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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 Fri Jun 26, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4940215312,114sleep00-21swapper/006:54:260
4546210710,66sleep14030-21apt-get06:53:411
6035999648,9cyclictest181rcu_preempt09:38:412
45992967,58sleep24648-21/usr/sbin/munin06:54:112
6014999373,12cyclictest277-21dbus-daemon10:28:160
6025999157,15cyclictest181rcu_preempt09:06:481
6025999157,15cyclictest181rcu_preempt09:06:481
6025998838,8cyclictest0-21swapper/111:51:421
601499887,37cyclictest15-21ksoftirqd/011:41:040
6035998659,18cyclictest1353-21idleruntime-cro08:23:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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