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2023-09-23 - 16:03
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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 20 highest latencies:
System rack0slot6.osadl.org (updated Sat Sep 23, 2023 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34279399416416,0cyclictest0-21swapper/520:38:0111
34279399416416,0cyclictest0-21swapper/520:38:0011
34279599399397,2cyclictest450307-21kworker/u32:021:55:0012
34278899382382,0cyclictest0-21swapper/420:37:0110
34278899382382,0cyclictest0-21swapper/420:37:0010
3424742379359,13sleep00-21swapper/019:09:440
3423562374353,14sleep80-21swapper/819:07:5914
3422872370350,13sleep100-21swapper/1019:06:572
3423092366345,14sleep150-21swapper/1519:07:187
3421742361320,14sleep50-21swapper/519:05:3111
3406792361355,4sleep110-21swapper/1119:05:213
3418872354334,13sleep40-21swapper/419:05:3010
3422112349330,13sleep70-21swapper/719:05:4913
3394042348327,14sleep10-21swapper/119:05:111
3404322347330,11sleep90-21swapper/919:05:1915
3394052347327,13sleep20-21swapper/219:05:128
3394002347327,13sleep140-21swapper/1419:05:086
3423972346303,14sleep120-21swapper/1219:08:354
3421932341320,14sleep60-21swapper/619:05:3212
3422612340319,15sleep30-21swapper/319:06:349
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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