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2024-11-22 - 06:24

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #6

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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackeslot6s.osadl.org (updated Fri Nov 22, 2024 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
541342998818,64cyclictest553719-21/usr/sbin/munin20:20:193
54133999851,60cyclictest563828-21rm21:20:011
541339998040,35cyclictest568815-21munin-plugin-st21:50:001
541336997936,39cyclictest0-21swapper/019:15:010
54133699754,16cyclictest569600-21unixbench_singl21:50:300
541339997030,36cyclictest542226-21apt-key19:15:011
54134099683,10cyclictest546636-21grep19:35:272
541340996827,9cyclictest0-21swapper/223:00:192
541339996718,40cyclictest0-21swapper/119:15:291
541340996631,5cyclictest0-21swapper/223:30:332
541339996632,30cyclictest0-21swapper/122:35:001
541339996619,39cyclictest0-21swapper/120:30:281
54133999659,45cyclictest0-21swapper/120:45:271
541339996427,32cyclictest0-21swapper/120:00:301
541340996318,12cyclictest0-21swapper/219:15:022
541339996335,21cyclictest0-21swapper/100:20:011
541339996326,33cyclictest0-21swapper/123:10:261
541339996326,33cyclictest0-21swapper/123:10:261
541339996319,36cyclictest0-21swapper/122:25:271
541339996316,38cyclictest0-21swapper/100:00:271
541340996227,8cyclictest556885-21sendmail20:40:002
541339996225,31cyclictest0-21swapper/100:25:291
541339996222,35cyclictest0-21swapper/123:25:281
541340996133,4cyclictest569649-21cron21:55:002
541340996128,4cyclictest0-21swapper/222:40:282
541340996127,5cyclictest0-21swapper/221:25:292
541340996127,5cyclictest0-21swapper/221:25:292
541339996136,21cyclictest0-21swapper/119:40:001
541339996113,39cyclictest0-21swapper/121:00:281
541340996025,11cyclictest0-21swapper/219:20:272
541339996031,24cyclictest0-21swapper/120:15:301
541339996026,29cyclictest0-21swapper/121:50:301
541339996014,39cyclictest0-21swapper/100:10:331
541339995922,33cyclictest0-21swapper/119:50:291
541339995922,32cyclictest0-21swapper/123:20:291
541339995919,35cyclictest0-21swapper/122:40:261
541339995911,39cyclictest0-21swapper/122:55:021
541336995912,39cyclictest0-21swapper/023:55:190
541339995821,30cyclictest0-21swapper/122:55:261
541339995821,29cyclictest0-21swapper/120:50:291
541339995819,30cyclictest0-21swapper/122:35:221
541339995813,35cyclictest0-21swapper/100:30:301
541340995730,6cyclictest558516-21grep20:45:272
541339995723,26cyclictest0-21swapper/121:35:251
541339995719,31cyclictest0-21swapper/120:55:261
541339995713,4cyclictest168350irq/127-8000000.ethernet-tx123:35:121
541340995523,10cyclictest0-21swapper/222:45:282
541339995522,28cyclictest0-21swapper/119:40:311
541339995522,28cyclictest0-21swapper/119:40:311
54133999552,16cyclictest580952-21apt-get23:00:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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