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2026-03-30 - 09:46
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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 rack0slot5.osadl.org (updated Mon Mar 30, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41498949954718,528cyclictest0-21swapper/1223:11:374
41498949954025,514cyclictest0-21swapper/1223:05:374
414986299518516,2cyclictest142002-21kworker/4:1+i915-unordered23:11:3710
41499079951313,499cyclictest0-21swapper/1520:18:377
41498899951387,425cyclictest9384-21kworker/11:1+i915-unordered20:21:373
414986299511508,2cyclictest142002-21kworker/4:1+i915-unordered23:05:3710
414987099510509,1cyclictest17527-21kworker/6:1+i915-unordered20:50:3712
414987099510509,1cyclictest17527-21kworker/6:1+i915-unordered20:50:3712
4149907995046,498cyclictest0-21swapper/1523:02:377
414988999494492,2cyclictest57638-21kworker/11:0+i915-unordered21:30:373
414988999493491,2cyclictest29226-21kworker/11:0+i915-unordered20:41:373
414988999493491,2cyclictest29226-21kworker/11:0+i915-unordered20:41:373
414988999491489,1cyclictest4145527-21kworker/11:0+i915-unordered19:10:383
414988999490489,1cyclictest4174787-21kworker/11:0+i915-unordered19:37:373
4149881994819,471cyclictest0-21swapper/919:47:3715
41498899947232,439cyclictest0-21swapper/1123:58:373
41498899947131,439cyclictest0-21swapper/1123:05:373
414987499471471,0cyclictest129920-21kworker/7:2+i915-unordered23:02:3713
414985199468466,2cyclictest4175744-21kworker/1:2+i915-unordered19:47:371
414987799465464,1cyclictest57429-21kworker/8:2+i915-unordered21:32:3714
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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