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2024-06-20 - 05:17

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #7

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.
Unexpectedly long latencies may be caused by SMIs
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 rack0slot7s.osadl.org (updated Thu Jun 20, 2024 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2578482211670,20sleep10-21swapper/119:05:391
2578790211473,33sleep30-21swapper/319:09:343
2577401210273,21sleep20-21swapper/219:05:162
2578697210072,20sleep00-21swapper/019:08:230
257899299688,41cyclictest0-21swapper/021:54:340
257899999280,4cyclictest0-21swapper/221:49:592
257899299270,3cyclictest0-21swapper/022:24:090
257899299270,25cyclictest2647088-21ntpq21:55:210
257899999250,25cyclictest0-21swapper/223:17:112
257899999250,16cyclictest0-21swapper/219:37:582
2578992992511,13cyclictest0-21swapper/021:33:240
257899299250,25cyclictest0-21swapper/023:07:590
257899299250,1cyclictest0-21swapper/020:21:200
2578999992111,10cyclictest0-21swapper/220:05:202
257899999206,14cyclictest0-21swapper/222:34:552
257899299202,16cyclictest2657795-21kworker/0:0+kacpid22:57:350
257899299190,4cyclictest0-21swapper/021:25:280
2578999991812,6cyclictest0-21swapper/223:25:182
257899999180,3cyclictest0-21swapper/222:00:292
257899299188,5cyclictest0-21swapper/023:26:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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