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2024-09-14 - 15:29
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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 rack0slot2.osadl.org (updated Sat Sep 14, 2024 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36492422425,31sleep70-21swapper/706:57:197
364937424131,7sleep50-21swapper/506:59:105
364912823423,8sleep40-21swapper/406:55:404
364968899330,1cyclictest0-21swapper/711:04:347
364009423321,8sleep60-21swapper/606:54:146
3649686993128,2cyclictest4130298-21kworker/u16:4+flush-8:011:25:226
3649688992927,1cyclictest0-21swapper/711:26:077
3649678992826,2cyclictest3711502-21kworker/u16:2+events_unbound07:29:104
3649686992624,2cyclictest3732933-21kworker/u16:1+flush-8:007:49:056
3649686992523,2cyclictest4062223-21kworker/u16:0+flush-8:010:44:066
3649682992521,3cyclictest4193879-21latency_hist11:34:105
3649682992521,3cyclictest3896663-21latency_hist09:04:115
3649682992521,3cyclictest3629871-21kworker/u16:5+events_unbound07:04:155
39177892240,1chrt0-21swapper/709:14:267
364968899242,14cyclictest0-21swapper/711:01:427
3649686992422,2cyclictest4062223-21kworker/u16:0+flush-8:011:39:066
3649686992422,2cyclictest3808002-21kworker/u16:1+flush-8:008:54:356
3649686992321,2cyclictest3663503-21kworker/u16:3+events_unbound07:04:366
3649688992221,0cyclictest0-21swapper/708:19:257
3649686992119,2cyclictest3926175-21kworker/u16:3+flush-8:009:44:276
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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