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2026-07-13 - 15:14
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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 Mon Jul 13, 2026 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32133215316,99sleep032162-21munin-run06:57:060
323009911854,37cyclictest32271-21cyclictest10:57:262
322809911655,53cyclictest0-21swapper/008:02:590
32280991112,20cyclictest31610-21apt-get08:32:190
322809911051,53cyclictest13795-21idleruntime-cro11:52:060
322939910870,32cyclictest0-21swapper/108:57:461
322809910737,62cyclictest20993-21grep07:57:430
31175210711,65sleep231264-21/usr/sbin/munin06:52:402
323009910562,36cyclictest3404-21latency_hist07:07:112
323009910562,36cyclictest3404-21latency_hist07:07:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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