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2024-04-18 - 03:06
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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 rack0slot6.osadl.org (updated Thu Apr 18, 2024 00:46:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26342779958233,44cyclictest0-21swapper/1321:06:435
26342709958059,520cyclictest0-21swapper/1121:54:423
26342779956041,29cyclictest0-21swapper/1321:01:595
26342779955333,519cyclictest0-21swapper/1321:14:525
26342649955332,520cyclictest0-21swapper/921:06:4215
26342739954847,0cyclictest0-21swapper/1222:19:444
26342709954812,535cyclictest0-21swapper/1122:36:213
26342779954725,520cyclictest0-21swapper/1320:48:425
26342649954695,443cyclictest2790628-21kworker/9:2+events23:19:2015
26342599954625,521cyclictest0-21swapper/723:08:2213
2634252995403,536cyclictest0-21swapper/519:58:5811
2634252995403,536cyclictest0-21swapper/519:58:5811
26342439953320,44cyclictest0-21swapper/222:02:568
26342839953226,505cyclictest0-21swapper/1400:02:426
263425999531531,0cyclictest0-21swapper/722:44:5513
26342839953012,518cyclictest0-21swapper/1420:19:206
2634247995264,0cyclictest0-21swapper/320:31:599
263427099525525,0cyclictest0-21swapper/1121:58:223
2634283995220,520cyclictest0-21swapper/1420:23:456
26342689952211,0cyclictest0-21swapper/1022:22:402
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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