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2025-05-02 - 12:39

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, 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 50 highest latencies:
System rack4slot1s.osadl.org (updated Fri May 02, 2025 00:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
59472720,3sleep30-21swapper/322:00:463
59472720,3sleep30-21swapper/322:00:463
568099668,9cyclictest181rcu_preempt00:15:351
568099668,9cyclictest181rcu_preempt00:15:351
248012650,2sleep0171ktimers/000:15:460
248012650,2sleep0171ktimers/000:15:460
60812640,1sleep06241-21unixbench_multi22:00:480
60812640,1sleep06241-21unixbench_multi22:00:480
76492600,2sleep07652-21proc_pri23:30:480
76492600,2sleep07652-21proc_pri23:30:480
568099584,8cyclictest181rcu_preempt22:45:361
568099584,8cyclictest181rcu_preempt22:45:361
201272570,2sleep00-21swapper/000:05:370
201272570,2sleep00-21swapper/000:05:370
17432570,2sleep20-21swapper/221:50:402
17432570,2sleep20-21swapper/221:50:402
280582560,2sleep128063-21sort23:00:381
280582560,2sleep128063-21sort23:00:381
22462560,3sleep00-21swapper/023:15:480
22462560,3sleep00-21swapper/023:15:480
568099556,7cyclictest181rcu_preempt21:00:391
568099556,7cyclictest181rcu_preempt21:00:391
568099524,9cyclictest181rcu_preempt20:20:371
307142520,3sleep30-21swapper/300:30:483
307142520,3sleep30-21swapper/300:30:483
102172520,1sleep010240-21open_files19:20:450
102172520,1sleep010240-21open_files19:20:450
5679995137,10cyclictest12733-21apt-get22:20:350
5679995137,10cyclictest12733-21apt-get22:20:350
568099504,33cyclictest663-21runrttasks19:55:371
568099502,8cyclictest181rcu_preempt00:35:351
568099502,8cyclictest181rcu_preempt00:35:351
5679995033,11cyclictest17020-21apt-get19:40:430
5679995033,11cyclictest17020-21apt-get19:40:430
568099484,8cyclictest181rcu_preempt21:20:391
568099481,8cyclictest181rcu_preempt23:15:371
568099481,8cyclictest181rcu_preempt23:15:371
5679994839,5cyclictest24235-21apt-get21:25:390
5679994821,16cyclictest12920-21chrt19:29:290
5679994821,10cyclictest21842-21seq22:43:280
5679994821,10cyclictest21842-21seq22:43:280
5679994821,10cyclictest21842-21seq22:43:280
568099472,7cyclictest181rcu_preempt21:15:341
568099472,7cyclictest181rcu_preempt21:15:341
568099471,2cyclictest181rcu_preempt22:30:371
5679994734,10cyclictest22643-21apt-get19:55:370
5679994728,18cyclictest12513-21apt-get23:45:370
5679994728,18cyclictest12513-21apt-get23:45:370
5679994721,9cyclictest30726-21tail00:30:480
5679994721,9cyclictest30726-21tail00:30:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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