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2024-04-20 - 09:31
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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 Sat Apr 20, 2024 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
368905599600600,0cyclictest0-21swapper/221:25:588
36890889952728,0cyclictest0-21swapper/1323:31:365
3689096995209,43cyclictest0-21swapper/1523:27:597
3689076995186,25cyclictest0-21swapper/923:54:2215
36890659951719,497cyclictest0-21swapper/522:33:2111
36890969950821,83cyclictest0-21swapper/1520:01:587
36890969950624,482cyclictest0-21swapper/1522:35:247
36890969950614,491cyclictest0-21swapper/1500:00:017
36890969950518,486cyclictest0-21swapper/1523:56:367
36890969950248,14cyclictest0-21swapper/1521:58:007
36890889950210,26cyclictest0-21swapper/1319:19:015
36890619950119,482cyclictest0-21swapper/419:15:2110
36890969950010,489cyclictest0-21swapper/1500:09:217
36890869950017,482cyclictest0-21swapper/1200:25:594
36890719949811,486cyclictest0-21swapper/722:49:5913
3689061994988,489cyclictest0-21swapper/419:28:2110
368908399496495,1cyclictest3583567-21kworker/11:5+i915-unordered19:45:233
3689061994958,486cyclictest0-21swapper/421:51:3610
3689088994940,491cyclictest0-21swapper/1319:12:595
368908399494493,1cyclictest3841322-21kworker/11:2+i915-unordered22:42:593
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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