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2023-02-07 - 19:20

x86 Intel Core i5-8365UE @1600 MHz, Linux 6.0.0-rt11 (Profile)

Latency plot of system in rack #e, slot #2
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 -Sp90 -i200 -h400 -q done
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 rackeslot2.osadl.org (updated Tue Oct 11, 2022 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2806839902320,1cyclictest0-21swapper/209:05:002
2806839902219,1cyclictest0-21swapper/207:50:002
2806839902119,1cyclictest0-21swapper/211:50:022
2806838902115,2cyclictest11systemd07:30:011
2806838901915,3cyclictest3325682-21apt-get12:20:011
2806838901915,2cyclictest3230730-21systemd-run11:00:021
2806839901816,1cyclictest0-21swapper/208:15:022
2806838901815,2cyclictest3348764-21systemd-run12:40:011
2806838901814,3cyclictest2906777-21irq-smp_affinit08:06:431
2806837901815,2cyclictest0-21swapper/010:40:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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