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2023-09-25 - 12:29

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 
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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 Mon Sep 25, 2023 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
548683210666,17sleep00-21swapper/019:09:520
548641210175,20sleep20-21swapper/219:09:222
548562210069,19sleep10-21swapper/119:08:211
54849129974,19sleep30-21swapper/319:07:283
548862996362,1cyclictest1036-21snmpd19:40:361
548867996160,1cyclictest582084-21sensors20:25:262
548867996160,1cyclictest0-21swapper/223:31:152
548867996153,4cyclictest755926-21sensors00:15:302
548862996059,1cyclictest1036-21snmpd23:16:131
548869995857,1cyclictest0-21swapper/321:55:283
548867995856,1cyclictest649487-21kworker/2:022:35:392
548867995856,1cyclictest649487-21kworker/2:022:35:392
548862995857,1cyclictest0-21swapper/122:15:271
548858995857,1cyclictest709888-21sensors23:20:330
54886299570,57cyclictest0-21swapper/121:05:311
54886299570,1cyclictest0-21swapper/119:15:301
54885899570,56cyclictest0-21swapper/019:45:280
548869995654,1cyclictest1036-21snmpd00:01:193
548869995554,1cyclictest626190-21sensors21:40:273
548862995554,1cyclictest557031-21sensors19:25:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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