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2023-06-04 - 22:58

x86 Intel Core i7-3632QM @2200 MHz, Linux 4.19.1-rt3 (Profile)

Latency plot of system in rack #6, 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
Characteristics of the 10 highest latencies:
System rack6slot3.osadl.org (updated Sun Jun 04, 2023 12:46:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2766427135,0sleep10-21swapper/107:09:151
2761026934,0sleep40-21swapper/407:08:294
2756926043,0sleep30-21swapper/307:07:573
2756425942,0sleep70-21swapper/707:07:527
2748725437,0sleep50-21swapper/507:06:475
2744125337,0sleep60-21swapper/607:06:076
2750025134,0sleep00-21swapper/007:06:570
2570525134,0sleep20-21swapper/207:05:072
471360,0ktimersoftd/40-21swapper/411:33:244
551350,0ktimersoftd/50-21swapper/511:33:255
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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