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2022-06-30 - 23:45

x86 Intel Core i9-9900K @3600 MHz, Linux 5.15.49-rt47 (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 10 highest latencies:
System rack0slot6.osadl.org (updated Thu Jun 30, 2022 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6736082397391,4sleep40-21swapper/419:05:3510
6736082397391,4sleep40-21swapper/419:05:3410
6747382353334,11sleep130-21swapper/1319:09:445
6747382353334,11sleep130-21swapper/1319:09:445
6746602343322,13sleep90-21swapper/919:09:2515
6746602343322,13sleep90-21swapper/919:09:2415
6736182343320,14sleep70-21swapper/719:05:3713
6736182343320,14sleep70-21swapper/719:05:3713
6742262342320,15sleep150-21swapper/1519:07:537
6742262342320,15sleep150-21swapper/1519:07:537
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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