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2022-07-01 - 01:40

x86 Intel Core i3-4330T @3000 MHz, Linux 3.18.11-rt7 (Profile)

Latency plot of system in rack #9, 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
Characteristics of the 10 highest latencies:
System rack9slot6.osadl.org (updated Thu Jun 30, 2022 12:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
237982137126sleep30-21swapper/307:05:063
256732123112sleep10-21swapper/107:08:061
257782112101sleep20-21swapper/207:09:272
25558211181sleep00-21swapper/007:06:350
26115993534cyclictest0-21swapper/211:00:132
26113993432cyclictest0-21swapper/007:40:150
26115993331cyclictest0-21swapper/211:40:152
26113993317cyclictest0-21swapper/010:05:240
26113992617cyclictest0-21swapper/012:35:190
26115992422cyclictest0-21swapper/210:15:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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