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2022-05-28 - 15:14

x86 Intel Core i9-9900K @3600 MHz, Linux 5.15.13-rt26 (Profile)

Latency plot of system in rack #0, slot #6
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 -q
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 May 28, 2022 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8723772403382,14sleep130-21swapper/1319:06:365
8723862362325,30sleep40-21swapper/419:06:4410
8724842359320,14sleep110-21swapper/1119:08:113
8724882358320,13sleep150-21swapper/1519:08:157
8725692352331,14sleep70-21swapper/719:09:2713
8725492352314,13sleep50-21swapper/519:09:0911
8725002351331,13sleep100-21swapper/1019:08:262
8724992351331,13sleep90-21swapper/919:08:2515
8723672351330,14sleep60-21swapper/619:06:2912
8723412348328,13sleep140-21swapper/1419:06:066
8725022346326,13sleep120-21swapper/1219:08:274
8725152345325,13sleep80-21swapper/819:08:4014
8724192345319,19sleep10-21swapper/119:07:131
8725812344323,14sleep20-21swapper/219:09:398
8723472343323,13sleep30-21swapper/319:06:119
8723272341321,13sleep00-21swapper/019:05:510
87293999315315,0cyclictest0-21swapper/1422:04:596
872935993070,307cyclictest0-21swapper/1319:41:585
872935993070,307cyclictest0-21swapper/1319:16:585
872935993070,1cyclictest0-21swapper/1319:27:595
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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