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2022-07-03 - 04:53

x86 Intel Celeron N3350 @1100 MHz, Linux 5.15.32-rt39 (Profile)

Latency plot of system in rack #6, slot #4
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by a total of 26434 SMIs that occured during the measurement.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 --smi -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 10 highest latencies:
System rack6slot4.osadl.org (updated Sun Jul 03, 2022 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1234799346343,2cyclictest25951-21kworker/0:023:31:050
1234799344341,2cyclictest17653-21kworker/0:222:24:280
1234799341338,2cyclictest8395-21kworker/0:120:40:130
1234799341338,2cyclictest25951-21kworker/0:023:37:130
1234799339336,2cyclictest19009-21kworker/0:119:22:220
1234799337334,2cyclictest26700-21kworker/0:000:03:140
1234799335332,2cyclictest8395-21kworker/0:120:33:410
1234799335332,2cyclictest20468-21kworker/0:100:38:400
1234799335332,2cyclictest11805-21kworker/0:020:36:510
1234799333330,2cyclictest30182-21kworker/0:022:43:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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