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2024-04-25 - 12:14
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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 Thu Apr 25, 2024 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38741025520,30sleep70-21swapper/719:08:327
38722024030,7sleep50-21swapper/519:05:495
387744993733,3cyclictest397423-21latency_hist19:13:464
38741823625,8sleep60-21swapper/619:08:396
387750993533,2cyclictest686878-21kworker/u16:4+events_unbound21:58:576
387750993431,2cyclictest804087-21kworker/u16:4+events_unbound23:29:046
38726623424,7sleep40-21swapper/419:06:294
387754993332,0cyclictest0-21swapper/720:39:107
387754993231,0cyclictest0-21swapper/723:05:377
387750993129,2cyclictest804087-21kworker/u16:4+flush-8:023:39:106
387750993129,2cyclictest775805-21kworker/u16:2+flush-8:022:49:136
387750993129,2cyclictest597848-21kworker/u16:2+events_unbound21:18:556
387750993129,2cyclictest412184-21kworker/u16:1+events_unbound19:49:156
387750993028,2cyclictest960245-21kworker/u16:0+flush-8:000:13:586
387750993028,2cyclictest686878-21kworker/u16:4+flush-8:022:33:586
387750993028,2cyclictest686878-21kworker/u16:4+flush-8:022:09:136
387750993028,2cyclictest511020-21kworker/u16:0+events_unbound21:39:156
387750992927,2cyclictest511021-21kworker/u16:3+flush-8:021:09:016
387750992924,2cyclictest726034-21kworker/u16:3+events_unbound22:29:036
387750992826,2cyclictest775805-21kworker/u16:2+flush-8:022:44:126
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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