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2026-07-01 - 05:04
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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 rack8slot2.osadl.org (updated Wed Jul 01, 2026 00:43:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
220713099173157,12cyclictest81-21hwrng00:33:111
220713099173157,12cyclictest81-21hwrng00:33:111
220713099155132,21cyclictest0-21swapper/122:00:171
22071299914722,42cyclictest2387242-21kworker/u16:18+xprtiod00:30:050
22071299914722,42cyclictest2387242-21kworker/u16:18+xprtiod00:30:050
220713099145130,11cyclictest81-21hwrng22:51:481
22071299914220,90cyclictest0-21swapper/022:40:540
22071299914220,90cyclictest0-21swapper/022:40:540
220713299138133,3cyclictest0-21swapper/322:25:163
220713299138133,3cyclictest0-21swapper/322:25:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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