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2026-07-11 - 13:53
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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 Sat Jul 11, 2026 00:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
253025410,15sleep30-21swapper/318:52:383
253025410,15sleep30-21swapper/318:52:383
39979912453,64cyclictest300-21rs:main0
40099912129,41cyclictest0-21swapper/223:17:312
3997991203,71cyclictest0-21swapper/021:02:290
3997991132,27cyclictest30465-21ssh23:17:360
3997991123,29cyclictest12251-21ssh23:41:470
3997991113,24cyclictest4238-21/usr/sbin/munin22:32:550
3997991092,26cyclictest28814-21ssh00:07:540
3997991092,26cyclictest28814-21ssh00:07:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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