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2024-04-26 - 02:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

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 100 highest latencies:
System rack7slot3s.osadl.org (updated Thu Apr 25, 2024 12:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
427322960,2sleep10-21swapper/107:07:471
5071991051,80cyclictest0-21swapper/012:07:280
180722990,5sleep3507499cyclictest11:22:313
180722990,5sleep3507499cyclictest11:22:313
507199941,44cyclictest0-21swapper/008:07:300
507199941,44cyclictest0-21swapper/008:07:300
5071999312,46cyclictest0-21swapper/008:02:340
507199872,48cyclictest27729-21sh09:27:300
109112860,2sleep10-21swapper/110:31:211
507199828,60cyclictest0-21swapper/007:57:330
507199821,62cyclictest0-21swapper/012:17:320
507199817,61cyclictest0-21swapper/012:02:250
507199814,23cyclictest0-21swapper/008:17:310
507199804,66cyclictest0-21swapper/010:07:310
5071998015,26cyclictest8050irq/56-dwc_otg_09:32:250
261252800,4sleep2507399cyclictest08:07:482
261252800,4sleep2507399cyclictest08:07:482
6292790,2sleep30-21swapper/308:27:453
507199791,58cyclictest0-21swapper/009:47:300
507199791,58cyclictest0-21swapper/009:47:300
229832790,4sleep122979-21ssh10:47:191
507199784,59cyclictest60-21kswapd012:32:250
507199784,57cyclictest13019-21grep10:32:500
507199777,46cyclictest4986-21basename11:47:190
507199775,52cyclictest7376-21grep08:47:350
319102760,2sleep3381ktimersoftd/312:22:213
507199759,54cyclictest0-21swapper/011:52:370
5071997514,20cyclictest8150irq/56-dwc_otg_10:42:300
191602750,2sleep10-21swapper/109:16:171
5072997433,13cyclictest24477-21ssh09:22:401
507199736,54cyclictest7077-21sh12:32:200
267782730,2sleep00-21swapper/012:14:580
267782730,2sleep00-21swapper/012:14:580
244462730,3sleep024409-21ssh09:22:400
5072997137,19cyclictest5551-21df11:47:361
507199716,54cyclictest0-21swapper/010:52:300
507199713,50cyclictest18170-21/usr/sbin/munin09:57:290
246322710,1sleep30-21swapper/310:06:193
67742700,2sleep00-21swapper/011:48:090
507199707,47cyclictest11004-21sed11:12:500
507199705,54cyclictest0-21swapper/009:07:310
507199702,56cyclictest0-21swapper/011:20:520
5071997010,46cyclictest19663-21cron09:17:180
507199694,52cyclictest6821-21cron08:47:190
50992680,8sleep1507299cyclictest07:12:281
5072996832,25cyclictest28562-21ssh10:11:361
507199688,42cyclictest5158-21latency_hist08:42:190
5072996731,17cyclictest19782-21ssh11:23:461
5072996731,17cyclictest19782-21ssh11:23:461
5072996627,12cyclictest15631-21ssh12:00:351
507199668,49cyclictest20853-21rm11:25:470
507199668,49cyclictest20853-21rm11:25:470
507199662,50cyclictest989-21sed08:27:490
5072996539,15cyclictest17907-21/usr/sbin/munin07:47:331
507199659,44cyclictest2865-21sh12:27:020
507199652,46cyclictest0-21swapper/010:22:350
507199644,51cyclictest11771-21grep12:37:420
507199642,47cyclictest0-21swapper/008:27:180
507199642,46cyclictest0-21swapper/011:27:400
507199641,53cyclictest0-21swapper/009:17:460
327352640,3sleep232728-21timerandwakeup09:32:492
5072996337,12cyclictest21646-21/usr/sbin/munin07:57:321
5072996326,15cyclictest15843-21diskmemload09:52:451
5072996326,14cyclictest28051-21rm11:34:011
507199632,50cyclictest0-21swapper/009:52:500
5071996312,30cyclictest0-21swapper/007:22:300
5071996312,30cyclictest0-21swapper/007:22:300
5072996232,16cyclictest15843-21diskmemload10:35:471
5072996229,18cyclictest15843-21diskmemload09:38:551
5072996226,17cyclictest6620-21ssh11:07:471
5071996215,43cyclictest101ktimersoftd/011:07:330
507199621,49cyclictest14515-21fschecks_time07:37:380
507199618,41cyclictest0-21swapper/010:40:530
507199617,42cyclictest0-21swapper/007:52:400
507199612,48cyclictest0-21swapper/011:37:440
507199612,46cyclictest13182-21ntpq09:03:100
507199612,46cyclictest0-21swapper/009:37:470
507199611,48cyclictest0-21swapper/007:17:380
507199611,44cyclictest2012-21/usr/sbin/munin11:02:400
5071996110,33cyclictest13276-21forks11:57:360
507199610,49cyclictest0-21swapper/009:01:240
507199610,49cyclictest0-21swapper/009:01:240
5072996035,16cyclictest13729-21ssh12:40:431
5072996026,14cyclictest11843-21ssh11:55:341
5072996023,9cyclictest8150irq/56-dwc_otg_08:02:511
5072996022,14cyclictest0-21swapper/107:27:251
507199609,37cyclictest29512-21ssh11:36:590
507199607,39cyclictest0-21swapper/010:47:520
5071996016,41cyclictest101ktimersoftd/010:27:290
507199601,44cyclictest10733-21aten_rbpower_vo07:27:350
507199601,43cyclictest7429-21ssh09:42:400
507199601,43cyclictest32131-21unixbench_multi10:57:480
5072995930,13cyclictest5013-21ssh11:47:191
5072995929,11cyclictest19464-21uptime09:57:511
507199599,40cyclictest0-21swapper/010:05:540
507199591,47cyclictest3165-21chrt08:37:000
5072995832,14cyclictest15843-21diskmemload11:39:421
5072995829,21cyclictest8076-21proc_pri12:32:481
507199587,35cyclictest0-21swapper/010:18:590
507199587,35cyclictest0-21swapper/010:18:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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