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2021-09-27 - 05:35

Intel(R) Core(TM) i3-4360 CPU @ 3.70GHz, Linux 5.10.1-rt20 (Profile)

Latency plot of system in rack #0, slot #4
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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack0slot4.osadl.org (updated Mon Sep 27, 2021 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3192174211567,18sleep20-21swapper/219:09:482
3191996210668,18sleep10-21swapper/119:08:271
3191819210472,19sleep00-21swapper/019:07:060
3192168210372,19sleep30-21swapper/319:09:453
34037392970,0sleep00-21swapper/023:36:040
3192374997219,32cyclictest0-21swapper/223:57:432
3192374997123,28cyclictest0-21swapper/220:17:432
3192374997120,30cyclictest3446538-21ssh00:17:432
3192374996964,2cyclictest25-21ksoftirqd/221:46:222
3192374996922,27cyclictest0-21swapper/222:22:422
3192374996810,30cyclictest0-21swapper/219:32:432
319237499680,64cyclictest3259192-21systemd-userwor21:21:172
3192374996762,2cyclictest3264168-21systemd-userwor21:25:022
3192374996762,2cyclictest3213893-21systemd-userwor19:57:402
319237499671,63cyclictest3242095-21systemd-userwor20:56:122
319237499669,31cyclictest0-21swapper/220:52:422
3192374996661,2cyclictest3223297-21systemd-userwor20:14:232
319237499660,63cyclictest3452947-21systemd-userwor00:29:022
319237499660,63cyclictest3278501-21systemd-userwor21:38:012
33768382650,0sleep10-21swapper/123:10:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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