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2025-11-26 - 10:05

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 Wed Nov 26, 2025 00:45:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2246699130128,1cyclictest0-21swapper/723:42:527
2246699130125,5cyclictest0-21swapper/723:50:137
22449991280,127cyclictest0-21swapper/423:13:034
2243299128127,0cyclictest21-21ksoftirqd/119:19:261
2246699127126,1cyclictest0-21swapper/719:45:097
2246699127122,4cyclictest0-21swapper/722:32:557
2244999127124,2cyclictest0-21swapper/423:32:474
2244499127125,1cyclictest37-21ksoftirqd/320:09:293
22466991260,125cyclictest0-21swapper/720:36:397
2246299126125,1cyclictest0-21swapper/622:48:576
2246299126124,1cyclictest0-21swapper/622:14:586
2246299126124,1cyclictest0-21swapper/619:19:586
22455991260,1cyclictest0-21swapper/522:55:565
22455991260,1cyclictest0-21swapper/519:53:495
2244499126125,0cyclictest37-21ksoftirqd/319:48:473
2246699125123,1cyclictest0-21swapper/722:21:487
2246699125123,1cyclictest0-21swapper/720:06:517
22466991250,124cyclictest0-21swapper/723:49:197
22466991250,124cyclictest0-21swapper/721:40:257
2243899125124,0cyclictest29-21ksoftirqd/222:21:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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