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2022-10-04 - 09:46

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 20 highest latencies:
System rack6slot4.osadl.org (updated Tue Oct 04, 2022 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2945499345342,2cyclictest29127-21kworker/0:122:19:590
2945499345342,2cyclictest22859-21kworker/0:122:38:500
2945499341338,2cyclictest12246-21kworker/0:223:01:580
2945499340337,2cyclictest16037-21kworker/0:100:34:450
2945499340337,2cyclictest16037-21kworker/0:100:06:160
2945499336333,2cyclictest28207-21kworker/0:023:20:060
2945499335332,2cyclictest31136-21kworker/0:119:27:220
2945499335332,2cyclictest22933-21kworker/0:221:56:580
2945499332329,2cyclictest22067-21kworker/0:020:23:280
2945499330327,2cyclictest17605-21kworker/0:120:17:520
2945499330327,2cyclictest16037-21kworker/0:100:12:040
2945499326323,2cyclictest10988-21kworker/0:019:51:160
2945499325322,2cyclictest5673-21kworker/0:121:17:320
2945499324321,2cyclictest24359-21kworker/0:223:50:520
2945499324321,2cyclictest24359-21kworker/0:223:50:510
2945499323320,2cyclictest22933-21kworker/0:222:07:280
2945499322319,2cyclictest22859-21kworker/0:123:06:300
2945499321318,2cyclictest5673-21kworker/0:121:10:580
2945499321318,2cyclictest28207-21kworker/0:023:43:160
2945499320317,2cyclictest31136-21kworker/0:119:19:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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