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2025-08-30 - 00:57

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 Fri Aug 29, 2025 12:45:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3070199141135,5cyclictest3-21ksoftirqd/009:56:040
3073599135134,1cyclictest0-21swapper/510:41:075
30747991300,2cyclictest0-21swapper/711:08:297
3074099127125,1cyclictest3674-21chk_conn_tcp09:46:496
3074099127125,1cyclictest3674-21chk_conn_tcp09:46:496
3071199127126,0cyclictest29-21ksoftirqd/208:21:472
3070199127124,2cyclictest0-21swapper/009:26:520
3074799126124,1cyclictest0-21swapper/707:15:467
3072899126124,1cyclictest0-21swapper/409:56:044
3072299126125,0cyclictest37-21ksoftirqd/312:19:103
3070199126122,3cyclictest0-21swapper/010:09:080
30747991250,124cyclictest0-21swapper/707:58:087
3071199125125,0cyclictest29-21ksoftirqd/210:47:142
3071199125124,0cyclictest29-21ksoftirqd/211:18:162
3070199125123,1cyclictest3-21ksoftirqd/007:53:250
3072299124123,0cyclictest37-21ksoftirqd/307:18:013
3070199124123,0cyclictest3-21ksoftirqd/011:50:560
30747991230,122cyclictest0-21swapper/710:37:227
3074099123122,1cyclictest0-21swapper/610:45:306
30740991230,1cyclictest0-21swapper/608:14:396
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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