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2021-07-26 - 19:08

Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz, Linux 5.4.102-rt53 (Profile)

Latency plot of system in rack #c, 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 -h200 -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 rackcslot6.osadl.org (updated Mon Jul 26, 2021 00:46:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
70277625200,5sleep2271rcuc/219:05:182
81254921530,2sleep070433899cyclictest21:36:080
7019882136118,3sleep50-21swapper/519:05:145
70259221310,11sleep0101ksoftirqd/019:05:160
704358999117,41cyclictest0-21swapper/223:24:522
704338998517,38cyclictest0-21swapper/019:14:520
704338998115,36cyclictest0-21swapper/000:34:520
704338998111,39cyclictest0-21swapper/000:24:520
704363998017,36cyclictest0-21swapper/320:54:523
704363998016,35cyclictest0-21swapper/323:59:523
704363998016,35cyclictest0-21swapper/323:59:523
704363997816,36cyclictest0-21swapper/300:09:523
9646462760,1sleep549-21ksoftirqd/523:41:015
7237082760,1sleep656-21ksoftirqd/619:40:006
8373202730,0sleep2271rcuc/221:56:452
70384027345,14sleep70-21swapper/719:05:327
8846662720,0sleep10-21swapper/122:35:211
9439762710,0sleep20-21swapper/223:25:122
704338997115,9cyclictest0-21swapper/019:34:520
704363997019,36cyclictest0-21swapper/321:19:533
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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