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2022-05-29 - 14:10

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 Sun May 29, 2022 12:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
80969818620,1850rtkit-daemon6576-21kerneloops07:05:451
17519910301021,7cyclictest6576-21kerneloops10:55:032
17519910271019,6cyclictest6576-21kerneloops07:20:012
175199999988,9cyclictest6576-21kerneloops12:34:292
175099999990,7cyclictest6576-21kerneloops07:35:271
175099998991,5cyclictest6576-21kerneloops10:39:141
175299997990,5cyclictest6576-21kerneloops09:13:183
175199997988,7cyclictest6576-21kerneloops11:06:192
175099997990,5cyclictest6576-21kerneloops11:30:301
175099997990,5cyclictest6576-21kerneloops09:40:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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