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2025-11-04 - 23:42

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 Tue Nov 04, 2025 12:45:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12500991300,2cyclictest0-21swapper/712:24:417
1249499129128,1cyclictest0-21swapper/611:08:556
1250099128125,2cyclictest0-21swapper/707:10:237
1249499128127,1cyclictest0-21swapper/607:55:456
1249499128126,1cyclictest0-21swapper/612:31:396
1249499128126,1cyclictest0-21swapper/612:31:396
1248799128126,1cyclictest0-21swapper/510:41:245
1250099127125,1cyclictest0-21swapper/709:57:507
12487991270,126cyclictest0-21swapper/510:47:595
1245799127125,1cyclictest3-21ksoftirqd/012:18:360
12500991260,1cyclictest0-21swapper/709:33:587
1249499126125,1cyclictest0-21swapper/607:48:276
12494991260,1cyclictest0-21swapper/612:00:026
1246599126126,0cyclictest21-21ksoftirqd/109:33:331
1245799126125,0cyclictest3-21ksoftirqd/011:50:420
1249499125123,2cyclictest0-21swapper/610:07:096
1249499125123,1cyclictest0-21swapper/612:19:396
12487991250,1cyclictest22325-21chk_conn_tcp07:30:525
1248299125124,1cyclictest0-21swapper/411:27:404
1246599125125,0cyclictest21-21ksoftirqd/111:27:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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