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2024-09-16 - 00:44

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 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 rack0slot1s.osadl.org (updated Sun Sep 15, 2024 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
866899117116,0cyclictest21-21ksoftirqd/112:15:571
868599111110,1cyclictest0-21swapper/411:39:144
869299107105,1cyclictest0-21swapper/512:15:575
868599104103,1cyclictest0-21swapper/411:16:334
8662998282,0cyclictest3-21ksoftirqd/011:39:140
8662997676,0cyclictest3-21ksoftirqd/011:16:330
8668997373,0cyclictest21-21ksoftirqd/112:28:331
8692996362,1cyclictest0-21swapper/512:28:335
8679996259,3cyclictest1725250irq/36-eth1-rx-11:35:193
8697995352,1cyclictest0-21swapper/607:48:176
8675995353,0cyclictest29-21ksoftirqd/207:48:172
815724424,17sleep50-21swapper/507:05:515
711224120,17sleep20-21swapper/207:05:172
8685993938,0cyclictest1725250irq/36-eth1-rx-09:22:054
824023413,18sleep00-21swapper/007:07:000
812323412,18sleep30-21swapper/307:05:263
632623411,18sleep60-21swapper/607:05:136
631823413,18sleep70-21swapper/707:05:067
814523313,17sleep40-21swapper/407:05:434
707923312,17sleep10-21swapper/107:05:151
8668992524,0cyclictest21-21ksoftirqd/112:02:391
866299183,9cyclictest0-21swapper/012:09:340
869799170,2cyclictest0-21swapper/610:01:366
868599170,2cyclictest0-21swapper/411:40:364
866299172,9cyclictest0-21swapper/010:38:210
866299172,12cyclictest0-21swapper/011:08:090
866299172,11cyclictest0-21swapper/011:59:340
866299172,10cyclictest0-21swapper/007:24:080
866299171,9cyclictest0-21swapper/012:03:460
866299171,9cyclictest0-21swapper/009:13:590
866299171,15cyclictest0-21swapper/010:45:170
866299167,8cyclictest0-21swapper/011:45:590
866299165,10cyclictest0-21swapper/011:34:330
866299165,10cyclictest0-21swapper/010:11:430
866299163,8cyclictest0-21swapper/010:41:010
866299163,2cyclictest0-21swapper/008:04:400
866299163,12cyclictest0-21swapper/009:21:370
866299161,9cyclictest0-21swapper/012:11:360
866299161,9cyclictest0-21swapper/010:29:370
866299161,9cyclictest0-21swapper/009:18:010
866299161,12cyclictest0-21swapper/010:52:430
8692991513,1cyclictest0-21swapper/512:02:395
868599150,13cyclictest0-21swapper/412:21:524
868599150,12cyclictest0-21swapper/410:54:364
866299155,8cyclictest0-21swapper/011:13:030
866299155,8cyclictest0-21swapper/010:03:410
866299155,8cyclictest0-21swapper/009:31:050
866299154,8cyclictest0-21swapper/009:50:410
866299154,8cyclictest0-21swapper/009:50:410
866299154,7cyclictest0-21swapper/012:20:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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