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2026-05-10 - 10:10
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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 20 highest latencies:
System rack0slot7.osadl.org (updated Sun May 10, 2026 00:46:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
245796399398397,1cyclictest137450irq/125-eno123:43:390
245799299301300,1cyclictest2460083-21kworker/u40:2+events_unbound19:54:2619
245799299289283,5cyclictest1741491-21Renderer22:36:1219
245798299288283,5cyclictest1741491-21Renderer23:07:5616
245798299288283,5cyclictest1741491-21Renderer00:27:1816
245797199288283,5cyclictest1741491-21Renderer23:04:2912
245796399288282,5cyclictest1741491-21Renderer22:45:460
245798899287283,4cyclictest1741491-21Renderer20:14:4818
245798899287283,3cyclictest1741491-21Renderer19:29:0618
245798899287281,5cyclictest1741491-21Renderer22:01:4818
245798899287281,5cyclictest1741491-21Renderer22:01:4818
245797899287282,5cyclictest1741491-21Renderer21:44:3215
245797899287281,5cyclictest1741491-21Renderer21:52:3115
245797699287282,5cyclictest1741491-21Renderer23:33:4614
245797699287282,5cyclictest1741491-21Renderer00:25:3414
245796399287283,3cyclictest1741491-21Renderer00:03:120
245799299286283,3cyclictest1741491-21Renderer21:55:2819
245799299286283,3cyclictest1741491-21Renderer21:55:2819
245799299286282,4cyclictest1741491-21Renderer20:39:4019
245799299286281,5cyclictest1741491-21Renderer20:58:3619
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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