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2025-09-15 - 16:35
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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 50 highest latencies:
System rack0slot5.osadl.org (updated Mon Sep 15, 2025 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
348866099535535,0cyclictest0-21swapper/720:00:5613
348868499505476,29cyclictest0-21swapper/1219:43:564
348868499495494,1cyclictest3654623-21kworker/12:2+i915-unordered22:35:564
34886369949215,60cyclictest0-21swapper/121:44:381
348868799479478,1cyclictest0-21swapper/1321:57:565
348868499479478,1cyclictest3699587-21kworker/12:2+i915-unordered23:27:564
348868799478477,1cyclictest0-21swapper/1321:43:565
3488687994750,475cyclictest0-21swapper/1300:34:555
348866099475473,2cyclictest0-21swapper/720:07:5613
34886569946617,30cyclictest0-21swapper/623:19:1812
34886569946617,29cyclictest0-21swapper/622:38:1812
34886569946515,29cyclictest0-21swapper/621:52:2012
34886529946518,30cyclictest0-21swapper/521:30:5611
34886369946216,29cyclictest0-21swapper/123:24:551
348869299460455,4cyclictest1811-21snmpd19:56:096
348865099458456,2cyclictest3518127-21kworker/4:0+i915-unordered19:43:5610
34886509945710,444cyclictest0-21swapper/423:09:5510
348867499451451,0cyclictest77250irq/159-i91519:48:562
3488660994509,440cyclictest3505978-21sleep19:31:5113
3488660994509,440cyclictest3505978-21sleep19:31:5113
348868499449446,2cyclictest3549647-21kworker/u64:6+events_unbound22:12:564
348868499449446,2cyclictest3549647-21kworker/u64:6+events_unbound22:12:564
3488652994490,29cyclictest0-21swapper/522:26:3911
3488650994493,29cyclictest0-21swapper/422:29:5610
3488652994480,30cyclictest0-21swapper/500:33:1711
3488652994470,30cyclictest0-21swapper/522:50:5511
34886459944726,421cyclictest0-21swapper/320:09:399
34886529944625,417cyclictest0-21swapper/523:14:3911
34886529944623,422cyclictest0-21swapper/522:15:1911
34886529944623,422cyclictest0-21swapper/522:15:1911
34886959944524,420cyclictest0-21swapper/1519:49:397
34886959944523,419cyclictest0-21swapper/1521:40:387
34886609944522,422cyclictest0-21swapper/721:56:5113
34886529944524,419cyclictest0-21swapper/522:45:1711
34886529944524,419cyclictest0-21swapper/520:46:1811
34886529944523,419cyclictest0-21swapper/522:01:1911
348865099445415,30cyclictest0-21swapper/422:35:5610
34886959944423,418cyclictest0-21swapper/1522:50:177
34886959944421,420cyclictest0-21swapper/1520:59:177
34886529944424,418cyclictest0-21swapper/523:23:1811
34886529944423,419cyclictest0-21swapper/523:05:4011
34886529944423,419cyclictest0-21swapper/500:25:1811
348864599444441,2cyclictest3673829-21kworker/u64:3+events_unbound23:05:569
348869599443440,2cyclictest3527641-21kworker/15:0+pm19:56:097
34886959944324,419cyclictest0-21swapper/1519:19:427
34886799944323,417cyclictest0-21swapper/1119:23:563
34886799944323,417cyclictest0-21swapper/1119:23:563
34886529944325,418cyclictest0-21swapper/520:34:5611
34886529944324,417cyclictest0-21swapper/522:03:4111
34886529944323,419cyclictest0-21swapper/519:50:1911
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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