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2024-11-23 - 17:11

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, slot #7

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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Click here to display the system's profile data.
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 20 highest latencies:
System rackfslot7s.osadl.org (updated Sat Nov 23, 2024 00:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
39053412201174,23sleep30-21swapper/319:08:333
39051552178147,27sleep20-21swapper/219:06:082
39054412141106,28sleep10-21swapper/119:09:471
39054162138111,22sleep00-21swapper/019:09:310
39231622950,1sleep23923165-21grep20:00:192
3905696997370,2cyclictest3988364-21kworker/u8:2+events_unbound00:15:021
3905699996864,3cyclictest3976864-21kworker/u8:1+flush-259:022:50:002
3905696996563,2cyclictest3913760-21kworker/u8:3+events_unbound21:55:011
3905696996256,4cyclictest3963686-21apt-get22:10:011
3905694996260,2cyclictest3988364-21kworker/u8:2+events_unbound23:52:540
3905694996260,2cyclictest3913760-21kworker/u8:3+events_unbound22:40:180
3905696996058,2cyclictest4006107-21kworker/u8:0+events_unbound00:39:591
3905696995957,2cyclictest3987525-21kworker/u8:3+flush-259:023:35:011
3905696995654,2cyclictest3908774-21kworker/u8:1+flush-259:021:30:201
3905694995654,2cyclictest3913760-21kworker/u8:3+events_unbound20:15:190
3905696995553,2cyclictest3976864-21kworker/u8:1+events_unbound23:10:011
3905696995452,1cyclictest3917078-21kworker/u8:2+flush-259:019:54:551
3905694995352,1cyclictest3908774-21kworker/u8:1+events_unbound20:25:180
3905694995351,2cyclictest3974202-21kworker/u8:2+flush-259:023:05:010
3905694994846,2cyclictest3908774-21kworker/u8:1+events_unbound21:30:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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