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2024-11-22 - 10:38
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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 10 highest latencies:
System rackeslot6.osadl.org (updated Fri Nov 22, 2024 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
368708099138131,6cyclictest3777691-21kworker/u8:2+events_unbound00:04:031
368707999117106,8cyclictest3732534-21/usr/sbin/munin21:30:300
368707999116111,4cyclictest3738898-21kworker/u8:2+events_unbound22:00:240
368707999112102,8cyclictest3774055-21kworker/u8:1+flush-179:000:00:000
368708099110105,4cyclictest3777691-21kworker/u8:2+events_unbound00:05:251
36870809910897,4cyclictest3749794-21kworker/u8:2+events_unbound22:25:191
36870809910799,6cyclictest3755694-21kworker/u8:1+flush-179:022:50:271
36870809910398,4cyclictest3693543-21kworker/u8:0+events_unbound20:00:221
36870799910187,11cyclictest3776122-21apt-get23:50:090
3687080999994,4cyclictest3682419-21kworker/u8:0+events_unbound19:15:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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