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2023-12-08 - 00:42
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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 rackeslot3 (updated Thu Dec 07, 2023 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134040999660,63cyclictest0-21swapper/111:49:591
1340409996561,2cyclictest0-21swapper/108:40:171
1340409996558,4cyclictest1522462-21munin-plugin-st12:05:001
1340409996544,19cyclictest783390-1kworker/1:2H09:29:591
1340409996461,2cyclictest0-21swapper/111:25:521
1340409996461,2cyclictest0-21swapper/107:40:111
1340409996438,25cyclictest1422916-21kworker/1:110:05:011
134040999640,62cyclictest0-21swapper/111:06:051
134040999640,1cyclictest0-21swapper/107:17:061
1340409996361,1cyclictest0-21swapper/108:05:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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