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2021-10-24 - 02:15

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 Fri Oct 15, 2021 00:46:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32428702138118,18sleep40-21swapper/419:05:274
32434642108104,2sleep50-21swapper/519:07:375
212099970,45rtkit-daemon0-21swapper/719:08:477
3243854999018,38cyclictest0-21swapper/719:14:287
3243854998516,36cyclictest0-21swapper/721:09:297
3243813998516,38cyclictest0-21swapper/200:14:292
3243799998416,36cyclictest0-21swapper/022:04:290
3243854998314,35cyclictest0-21swapper/723:59:287
3243839998315,39cyclictest0-21swapper/519:39:295
3243799998316,37cyclictest0-21swapper/023:49:280
3243839998216,37cyclictest0-21swapper/523:14:285
3243839998115,36cyclictest0-21swapper/520:59:295
3243799998116,36cyclictest0-21swapper/000:34:280
3243799998015,37cyclictest0-21swapper/022:29:290
3243799998015,35cyclictest0-21swapper/020:44:280
324124927737,33sleep20-21swapper/219:05:092
324359027637,13sleep00-21swapper/019:09:250
34432002750,0sleep20-21swapper/223:05:242
34323882730,0sleep30-21swapper/322:55:143
33204342730,1sleep335-21ksoftirqd/321:16:393
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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