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2019-07-22 - 07:33

Intel(R) Core(TM) i3-4360 CPU @ 3.70GHz, Linux 4.18.7-rt5 (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
Characteristics of the 20 highest latencies:
System rack0slot4.osadl.org (updated Fri Oct 13, 2017 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24173211164,0sleep10-21swapper/119:09:171
2399229453,0sleep20-21swapper/219:06:592
2389329255,0sleep30-21swapper/319:05:433
2389028067,0sleep00-21swapper/019:05:390
2427599640,0cyclictest46-21ksoftirqd/300:10:303
2427599640,0cyclictest3861-21kworker/u8:022:19:333
2427599640,0cyclictest2674-21kworker/u8:000:05:223
2427599640,0cyclictest21220-21kworker/u8:023:28:103
2427599640,0cyclictest0-21swapper/322:25:013
24275996363,0cyclictest0-21swapper/322:51:183
2427599630,0cyclictest26977-21kworker/u8:121:35:313
2427599630,0cyclictest0-21swapper/322:43:473
2427599630,0cyclictest0-21swapper/322:01:083
2427599630,0cyclictest0-21swapper/300:25:503
24273996363,0cyclictest28773-21kworker/1:219:23:051
24272996363,0cyclictest28655-21kworker/0:220:59:590
24275996262,0cyclictest0-21swapper/321:34:513
24275996261,0cyclictest12077-21kworker/u8:123:03:563
24275996261,0cyclictest0-21swapper/322:31:093
2427599620,0cyclictest21220-21kworker/u8:023:17:553
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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