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2021-09-28 - 08:56

Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz, Linux 5.10.52-rt47 (Profile)

Latency plot of system in rack #0, slot #3
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
Characteristics of the 20 highest latencies:
System rack0slot3.osadl.org (updated Tue Sep 28, 2021 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
124982371354,11sleep100-21swapper/1019:09:402
121842354349,3sleep60-21swapper/619:05:3412
123502352347,3sleep90-21swapper/919:07:4615
122192351345,4sleep40-21swapper/419:06:0510
123072350332,11sleep50-21swapper/519:07:1011
122712340323,11sleep80-21swapper/819:06:4214
123562339321,12sleep150-21swapper/1519:07:527
123552335318,11sleep140-21swapper/1419:07:526
124602334315,11sleep130-21swapper/1319:09:125
122622333315,12sleep00-21swapper/019:06:330
122882332315,11sleep70-21swapper/719:06:5713
123972331314,11sleep120-21swapper/1219:08:214
125082330314,11sleep30-21swapper/319:09:499
121972328312,11sleep10-21swapper/119:05:461
123042326309,10sleep20-21swapper/219:07:078
121902323305,11sleep110-21swapper/1119:05:403
1270099464,42cyclictest0-21swapper/519:22:4111
271412370,0sleep110-21swapper/1122:31:153
12700993717,20cyclictest0-21swapper/523:40:0811
12700993717,20cyclictest0-21swapper/523:40:0711
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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