You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2021-06-17 - 18:55

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 Thu Jun 17, 2021 00:43:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1698353211372,19sleep10-21swapper/119:08:131
1698225210970,18sleep00-21swapper/019:06:360
1698201210675,18sleep30-21swapper/319:06:193
1698290210462,16sleep20-21swapper/219:07:262
1698702997411,32cyclictest0-21swapper/023:47:140
169870299719,30cyclictest0-21swapper/000:32:140
1698711996561,3cyclictest2129-21gnome-shell22:12:582
1698716996463,1cyclictest1824780-21kworker/3:022:29:593
1698711996461,3cyclictest1706879-21sensors19:25:282
1698702996462,1cyclictest1698161-21kworker/0:120:25:200
169870299640,63cyclictest0-21swapper/022:40:250
1698711996361,2cyclictest1831710-21sensors22:30:312
169870299638,29cyclictest0-21swapper/000:07:140
1698702996362,1cyclictest1698161-21kworker/0:120:20:230
1698702996361,1cyclictest2129-21gnome-shell22:04:580
1698702996361,1cyclictest2129-21gnome-shell21:14:590
1698716996261,1cyclictest0-21swapper/322:31:583
1698716996260,1cyclictest2129-21gnome-shell00:22:583
169871699620,61cyclictest0-21swapper/323:34:583
1698707996261,1cyclictest2129-21gnome-shell23:34:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional