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2023-09-25 - 15:09
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rack5slot2.osadl.org (updated Mon Sep 25, 2023 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
173352188171,12sleep00-21swapper/007:07:140
173512187171,11sleep10-21swapper/107:07:271
172712176160,11sleep30-21swapper/307:06:263
174522167149,13sleep20-21swapper/207:08:462
322412450,0sleep20-21swapper/210:00:362
250542450,0sleep20-21swapper/209:56:192
242392100,0sleep10-21swapper/111:37:031
12143290,0sleep20-21swapper/208:00:212
177339980,4cyclictest19323-21munin-run11:55:000
177339971,3cyclictest13766-21perf09:10:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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