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2025-09-19 - 02:52

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 Sep 19, 2025 00:45:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1789599136135,1cyclictest29-21ksoftirqd/222:18:082
1792299134131,2cyclictest0-21swapper/722:03:087
17922991280,1cyclictest0-21swapper/720:56:387
17908991280,127cyclictest0-21swapper/423:26:344
17908991270,126cyclictest0-21swapper/421:46:554
1789599127126,0cyclictest29-21ksoftirqd/219:36:292
1789599127120,6cyclictest29-21ksoftirqd/221:27:132
1788499127125,1cyclictest3-21ksoftirqd/023:45:380
1792299126125,1cyclictest0-21swapper/722:16:297
1790199126123,2cyclictest37-21ksoftirqd/322:11:473
1792299125120,4cyclictest12750-21chk_conn_tcp23:53:487
1790899125123,1cyclictest0-21swapper/419:51:354
1790899125123,1cyclictest0-21swapper/419:19:174
1789599125121,3cyclictest29-21ksoftirqd/221:42:212
1789599125121,3cyclictest29-21ksoftirqd/221:42:202
1792299124122,1cyclictest1658-21chk_conn_tcp22:58:037
1788499124124,0cyclictest3-21ksoftirqd/023:44:090
1790899122121,1cyclictest0-21swapper/420:07:164
1792299121119,1cyclictest0-21swapper/721:29:127
1790199119118,0cyclictest37-21ksoftirqd/322:55:353
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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