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2025-12-10 - 10:56

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 Dec 10, 2025 00:45:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2081199129127,1cyclictest0-21swapper/519:27:175
2081199129126,2cyclictest0-21swapper/521:46:435
20817991280,127cyclictest0-21swapper/600:08:526
2081199126124,1cyclictest0-21swapper/520:34:465
2081199126124,1cyclictest0-21swapper/520:34:465
2079299126122,3cyclictest29-21ksoftirqd/219:48:402
2077599126125,0cyclictest3-21ksoftirqd/000:39:350
2079999125123,1cyclictest37-21ksoftirqd/320:28:033
2078699125124,0cyclictest21-21ksoftirqd/119:24:501
2081199124122,1cyclictest0-21swapper/522:49:395
2081199124122,1cyclictest0-21swapper/519:24:405
20811991240,1cyclictest0-21swapper/520:16:385
2080499124121,2cyclictest0-21swapper/420:42:124
2077599124123,0cyclictest3-21ksoftirqd/020:27:520
2081199123121,1cyclictest0-21swapper/521:22:045
2079299123122,0cyclictest29-21ksoftirqd/222:49:452
2081199122119,2cyclictest0-21swapper/522:31:295
2079999122121,0cyclictest37-21ksoftirqd/320:22:553
2079299122120,1cyclictest20529-21chk_conn_tcp20:16:432
2077599122121,1cyclictest0-21swapper/021:22:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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