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OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #0

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 r0s0s.osadl.org (updated Fri Jan 23, 2026 00:46:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27186002297278,12sleep60-21swapper/619:09:296
27185532293257,28sleep40-21swapper/419:08:484
27185992291273,11sleep50-21swapper/519:09:295
27184932290270,13sleep00-21swapper/019:07:540
27186252288268,13sleep20-21swapper/219:09:502
27185232287268,12sleep30-21swapper/319:08:213
27184312286267,12sleep70-21swapper/719:07:067
27183462285266,12sleep10-21swapper/119:05:551
271911399350,34cyclictest0-21swapper/321:50:233
2719111993434,0cyclictest0-21swapper/122:12:511
2719117993330,2cyclictest449069-21snmpd23:55:127
2719117993330,2cyclictest449069-21snmpd19:49:177
2719115993330,2cyclictest449069-21snmpd23:18:585
2719115993330,2cyclictest449069-21snmpd19:12:525
2719115993330,2cyclictest449069-21snmpd00:31:045
2719115993330,2cyclictest449069-21snmpd00:16:455
271911599330,30cyclictest0-21swapper/520:18:065
2719114993330,2cyclictest449069-21snmpd19:35:114
271911499330,30cyclictest0-21swapper/422:30:034
271911499330,30cyclictest0-21swapper/422:30:034
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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