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2022-05-26 - 18:50

x86 Intel Core i3-2100T @2500 MHz, Linux 4.14.28-rt23 (Profile)

Latency plot of system in rack #0, slot #0
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rack0slot0.osadl.org (updated Thu May 26, 2022 12:45:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2896921430,0sleep10-21swapper/110:08:261
2114521420,4sleep22548399cyclictest10:13:162
2114521420,4sleep22548399cyclictest10:13:162
641521300,0sleep46416-21sshd10:23:044
641521300,0sleep46416-21sshd10:23:044
3242921120,0sleep10-21swapper/111:12:141
49722840,0sleep60-21swapper/609:25:196
39332820,1sleep10-21swapper/111:04:201
300672820,1sleep10-21swapper/110:14:031
300672820,1sleep10-21swapper/110:14:031
257512810,1sleep50-21swapper/512:36:585
22392810,1sleep022578-21kworker/0:111:17:580
177152790,0sleep30-21swapper/309:42:473
6052780,0sleep10-21swapper/112:32:051
324522770,0sleep70-21swapper/709:27:367
291592770,0sleep70-21swapper/711:09:157
185542770,0sleep40-21swapper/410:54:304
89122760,2sleep51013-21runrttasks09:42:015
251242760,0sleep50-21swapper/511:55:385
217142760,1sleep121711-21sshd09:12:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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