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2025-05-05 - 00:03

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #1

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 rack0slot1s.osadl.org (updated Sun May 04, 2025 12:45:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2676399136136,0cyclictest21-21ksoftirqd/111:13:481
26789991330,2cyclictest0-21swapper/711:19:107
2678999132130,1cyclictest0-21swapper/710:59:557
26779991310,130cyclictest0-21swapper/512:06:465
2678999130128,1cyclictest0-21swapper/711:04:387
26785991300,129cyclictest0-21swapper/610:54:316
2677599130129,1cyclictest0-21swapper/412:35:154
2677499130130,0cyclictest37-21ksoftirqd/312:15:293
2677499130128,1cyclictest37-21ksoftirqd/308:59:173
2675499130128,1cyclictest3-21ksoftirqd/012:35:150
2678599129127,1cyclictest0-21swapper/607:27:096
2677599129127,1cyclictest0-21swapper/411:11:154
2678999128125,2cyclictest0-21swapper/711:14:557
2678599128127,1cyclictest0-21swapper/611:11:466
2678599128125,2cyclictest0-21swapper/612:33:286
2677999128127,1cyclictest0-21swapper/512:33:005
26779991280,127cyclictest0-21swapper/511:02:495
2677599128126,2cyclictest0-21swapper/410:06:564
2677499128128,0cyclictest37-21ksoftirqd/308:01:213
2678999127126,1cyclictest0-21swapper/711:28:547
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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