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2025-07-13 - 10:01

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 Jul 13, 2025 00:45:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
399499133130,1cyclictest0-21swapper/321:53:273
400899129127,1cyclictest11769-21chk_conn_tcp00:23:175
4008991290,128cyclictest0-21swapper/521:50:355
401999128126,1cyclictest0-21swapper/700:37:037
4015991280,2cyclictest0-21swapper/619:11:596
400899127126,1cyclictest0-21swapper/500:39:225
400899126124,1cyclictest0-21swapper/519:48:365
4008991260,125cyclictest24154-21ssh21:29:285
399099126120,5cyclictest29-21ksoftirqd/222:07:322
401999125123,1cyclictest0-21swapper/722:08:257
401999125121,3cyclictest69-21ksoftirqd/720:45:417
4015991250,124cyclictest0-21swapper/623:37:076
400899125124,1cyclictest0-21swapper/521:22:015
400899125124,1cyclictest0-21swapper/520:42:055
398399125123,1cyclictest21-21ksoftirqd/100:16:481
3977991250,124cyclictest0-21swapper/020:41:120
4019991240,2cyclictest0-21swapper/721:51:377
400299124122,1cyclictest0-21swapper/423:43:504
399499124123,1cyclictest37-21ksoftirqd/319:39:003
398399124124,0cyclictest21-21ksoftirqd/100:39:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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