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2022-01-16 - 10:59

Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz, 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 20 highest latencies:
System rack0slot3.osadl.org (updated Sun Jan 16, 2022 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40875132414373,31sleep100-21swapper/102
40875972412333,31sleep140-21swapper/146
40875742407328,35sleep110-21swapper/113
40875512403324,31sleep50-21swapper/511
40873422401321,70sleep40-21swapper/410
40876142389340,39sleep120-21swapper/124
40875322388342,36sleep90-21swapper/915
40875182387336,39sleep130-21swapper/135
40874542386337,39sleep60-21swapper/612
40876582383336,36sleep70-21swapper/713
40874502383304,31sleep30-21swapper/39
40875002380335,35sleep150-21swapper/157
40874562379334,35sleep80-21swapper/814
40875452378334,34sleep00-21swapper/00
40874062377339,28sleep20-21swapper/28
40874052377328,39sleep10-21swapper/11
40890802590,2sleep30-21swapper/39
1428522570,2sleep110-21swapper/113
408804599482,22cyclictest0-21swapper/814
408803999437,12cyclictest0-21swapper/511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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