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2021-10-24 - 01:59

Intel(R) Core(TM) i7 CPU X 990 @ 3.47GHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #c, slot #1
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 rackcslot1.osadl.org (updated Fri Oct 15, 2021 12:48:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
395499990,89rtkit-daemon0-21swapper/507:06:347
1697328171,7sleep110-21swapper/1107:06:253
1692227262,7sleep20-21swapper/207:05:404
1472827150,6sleep100-21swapper/1007:05:112
1632227061,6sleep70-21swapper/707:05:339
1708726960,6sleep30-21swapper/307:08:055
1717426754,9sleep00-21swapper/007:09:150
1699426544,7sleep60-21swapper/607:06:458
1693026550,12sleep80-21swapper/807:05:4610
1718326354,6sleep90-21swapper/907:09:2311
202902620,1sleep90-21swapper/908:59:0111
1705726050,7sleep10-21swapper/107:07:391
1692425950,6sleep40-21swapper/407:05:426
209282510,1sleep00-21swapper/012:00:480
38632370,1sleep50-21swapper/511:43:157
1771899294,13cyclictest0-21swapper/1111:45:003
1771299254,14cyclictest0-21swapper/1010:50:002
1768999244,14cyclictest0-21swapper/610:50:008
1771299233,14cyclictest0-21swapper/1011:35:002
1769599221,15cyclictest0-21swapper/710:35:009
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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