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2023-02-08 - 05:25

x86 Intel Core i3-2350M @2300 MHz, Linux 4.18.7-rt5 (Profile)

Latency plot of system in rack #6, slot #8
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 rack6slot8.osadl.org (updated Wed Feb 08, 2023 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271319910241014,8cyclictest6576-21kerneloops22:20:000
271339910211011,8cyclictest6576-21kerneloops00:07:152
271349910201011,7cyclictest6576-21kerneloops00:05:323
271349910191012,5cyclictest6576-21kerneloops20:26:533
271329910191011,6cyclictest6576-21kerneloops19:46:221
271329910191010,7cyclictest6576-21kerneloops21:20:191
271319910191005,12cyclictest6576-21kerneloops21:36:320
271319910191005,12cyclictest6576-21kerneloops21:36:310
271349910171009,6cyclictest6576-21kerneloops23:08:373
271349910171009,6cyclictest6576-21kerneloops23:08:363
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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