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2025-07-10 - 12:27

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

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 or here to proceed to next system.
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 rack7slot3s.osadl.org (updated Thu Jul 10, 2025 00:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2147221740,1sleep00-21swapper/000:10:300
7649910121,65cyclictest11144-21unixbench_singl21:05:300
7649910121,65cyclictest11144-21unixbench_singl21:05:300
764999628,39cyclictest19072-21cron21:20:010
764999226,47cyclictest0-21swapper/021:40:130
764999224,51cyclictest4025-21unixbench_multi00:30:320
764999028,44cyclictest0-21swapper/022:00:170
764998926,45cyclictest26423-21fschecks_count20:20:220
764998926,45cyclictest26423-21fschecks_count20:20:220
764998822,51cyclictest26322-21ssh00:17:180
764998821,45cyclictest0-21swapper/019:25:150
764998724,53cyclictest31531-21/usr/sbin/munin00:25:140
764998624,48cyclictest19959-21/usr/sbin/munin21:20:220
764998624,43cyclictest29840-21aten_rbpower_en23:40:170
764998524,52cyclictest25312-21ssh21:26:590
764998422,44cyclictest0-21swapper/023:11:340
764998419,13cyclictest2403-21unixbench_multi23:45:340
764998331,33cyclictest31092-21ssh22:16:520
764998324,43cyclictest25589-21rm23:35:010
764998324,42cyclictest13400-21rm21:54:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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