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2022-07-01 - 01:37

x86 Intel Core i9-9900K @3600 MHz, Linux 5.15.2-rt19 (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
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rack0slot3.osadl.org (updated Fri Jul 01, 2022 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6206192359318,14sleep150-21swapper/1519:06:197
6207572356349,4sleep40-21swapper/419:08:1810
6206272355316,32sleep60-21swapper/619:06:2612
6208772353313,13sleep70-21swapper/719:09:4013
6208872348328,13sleep130-21swapper/1319:09:465
6174822347307,13sleep90-21swapper/919:05:0915
6207622346329,11sleep80-21swapper/819:08:2114
6208422345306,32sleep140-21swapper/1419:09:156
6207642342322,14sleep100-21swapper/1019:08:242
6205772340320,14sleep110-21swapper/1119:05:433
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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