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2024-11-25 - 14:43

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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  Phytec
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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

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 10 highest latencies:
System rackbslot5s.osadl.org (updated Mon Nov 25, 2024 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
838335995953,4cyclictest843721-21kworker/u8:0+events_unbound19:55:431
838343995650,4cyclictest916522-21kworker/u8:3+events_unbound23:11:103
838335995344,5cyclictest847386-21debian-sa119:35:001
838343995245,5cyclictest843721-21kworker/u8:0+events_unbound20:30:463
838343995245,5cyclictest843721-21kworker/u8:0+events_unbound20:30:463
838333995042,5cyclictest946352-21munin-plugin-st00:25:000
838343994936,10cyclictest391ktimers/320:15:143
838340994836,8cyclictest863042-21apt-config20:20:012
838333994836,8cyclictest916660-21sh22:55:010
838333994737,7cyclictest885088-21grep21:20:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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