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2026-05-08 - 07:24

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 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.

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 100 highest latencies:
System rackeslot6s.osadl.org (updated Fri May 08, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1237409998844,41cyclictest1246945-21munin-plugin-st20:05:013
123740399791,35cyclictest231ktimers/121:50:191
123740299632,57cyclictest0-21swapper/021:35:130
1237405996235,7cyclictest0-21swapper/221:35:282
123740299607,16cyclictest15-21rcuc/021:55:010
1237402995949,6cyclictest0-21swapper/000:30:100
1237402995529,21cyclictest131ktimers/020:20:120
1237402995528,24cyclictest20650irq/252-8000000.ethernet20:05:240
1237402995513,25cyclictest12-21ksoftirqd/019:10:020
123740399531,31cyclictest0-21swapper/120:55:011
1237402995338,11cyclictest1246096-21sendmail20:00:000
1237402995332,15cyclictest167350irq/118-8000000.ethernet-tx019:15:040
1237402995326,23cyclictest1243471-21tail19:40:280
1237403995241,7cyclictest1273198-21sendmail22:39:591
1237402995222,24cyclictest0-21swapper/023:30:130
1237402995115,4cyclictest12-21ksoftirqd/000:10:000
1237402995023,20cyclictest20650irq/252-8000000.ethernet00:10:020
1237402994941,5cyclictest1269815-21munin-plugin-st22:20:010
1237402994928,13cyclictest131ktimers/023:05:120
1237403994841,4cyclictest1293738-21sendmail00:40:011
1237403994840,5cyclictest0-21swapper/121:45:011
1237403994834,10cyclictest0-21swapper/121:25:291
123740399481,26cyclictest0-21swapper/120:00:001
1237402994841,4cyclictest167350irq/118-8000000.ethernet-tx022:40:230
1237402994840,4cyclictest167350irq/118-8000000.ethernet-tx021:00:010
1237402994838,6cyclictest1274926-21unixbench_singl22:45:300
1237402994835,10cyclictest1283-21cron20:49:590
1237402994825,20cyclictest20650irq/252-8000000.ethernet22:30:260
1237402994824,21cyclictest20650irq/252-8000000.ethernet20:15:180
1237402994823,22cyclictest20650irq/252-8000000.ethernet20:35:280
1237402994823,22cyclictest20650irq/252-8000000.ethernet20:35:270
1237402994819,27cyclictest0-21swapper/023:00:240
1237403994736,7cyclictest0-21swapper/122:15:001
1237402994725,20cyclictest20650irq/252-8000000.ethernet21:15:240
1237402994725,19cyclictest20650irq/252-8000000.ethernet21:05:180
1237402994725,19cyclictest20650irq/252-8000000.ethernet20:55:000
1237402994724,20cyclictest20650irq/252-8000000.ethernet23:25:170
1237402994724,20cyclictest20650irq/252-8000000.ethernet19:30:000
1237402994723,21cyclictest20650irq/252-8000000.ethernet19:45:270
1237402994719,24cyclictest1270676-21wc22:25:010
1237403994636,7cyclictest1278343-21munin-plugin-st23:10:011
123740299462,6cyclictest1244659-21df19:50:160
1237402994626,13cyclictest131ktimers/022:05:110
1237402994624,20cyclictest20650irq/252-8000000.ethernet23:15:280
1237402994624,20cyclictest20650irq/252-8000000.ethernet23:15:280
1237402994624,19cyclictest20650irq/252-8000000.ethernet23:55:200
1237402994624,19cyclictest20650irq/252-8000000.ethernet20:40:270
1237402994624,19cyclictest20650irq/252-8000000.ethernet20:40:270
1237403994537,5cyclictest1242710-21latency_hist19:40:001
1237403994533,7cyclictest0-21swapper/121:35:291
1237403994532,8cyclictest0-21swapper/123:45:291
1237402994537,4cyclictest167350irq/118-8000000.ethernet-tx021:40:190
1237402994537,4cyclictest167350irq/118-8000000.ethernet-tx019:20:180
1237402994530,10cyclictest0-21swapper/023:00:010
1237402994524,19cyclictest20650irq/252-8000000.ethernet22:00:140
1237402994523,19cyclictest20650irq/252-8000000.ethernet21:20:170
1237402994523,19cyclictest20650irq/252-8000000.ethernet21:20:170
1237402994523,19cyclictest20650irq/252-8000000.ethernet00:20:270
1237402994521,22cyclictest0-21swapper/020:35:010
1237405994429,11cyclictest0-21swapper/221:20:002
1237403994431,8cyclictest0-21swapper/100:00:301
1237403994430,9cyclictest0-21swapper/121:30:301
1237403994427,12cyclictest0-21swapper/119:40:281
1237402994437,4cyclictest167350irq/118-8000000.ethernet-tx021:55:290
1237402994437,4cyclictest167350irq/118-8000000.ethernet-tx019:35:170
1237402994424,18cyclictest20650irq/252-8000000.ethernet21:10:160
1237402994422,17cyclictest131ktimers/000:15:120
1237402994421,21cyclictest0-21swapper/020:00:260
1237402994419,23cyclictest1283094-21if_eth123:35:230
1237402994419,23cyclictest0-21swapper/022:10:290
1237402994413,28cyclictest0-21swapper/023:10:270
1237405994330,8cyclictest0-21swapper/221:50:292
1237403994334,5cyclictest0-21swapper/121:10:261
1237403994332,7cyclictest0-21swapper/120:05:281
1237403994324,9cyclictest0-21swapper/123:35:021
1237402994323,18cyclictest20650irq/252-8000000.ethernet23:55:010
1237402994323,18cyclictest20650irq/252-8000000.ethernet23:55:010
1237402994322,19cyclictest20650irq/252-8000000.ethernet23:45:280
1237405994228,9cyclictest0-21swapper/219:40:272
1237405994228,10cyclictest0-21swapper/220:40:022
1237405994228,10cyclictest0-21swapper/220:40:022
123740599421,33cyclictest1256241-21unixbench_singl20:55:272
123740399428,30cyclictest231ktimers/121:10:011
1237403994232,6cyclictest1251895-21grep20:30:281
1237403994229,9cyclictest0-21swapper/100:30:291
1237403994224,10cyclictest0-21swapper/123:25:291
123740399421,22cyclictest0-21swapper/123:55:011
123740399421,22cyclictest0-21swapper/123:55:011
1237402994224,16cyclictest0-21swapper/022:25:270
1237402994224,16cyclictest0-21swapper/022:25:270
123740299422,38cyclictest0-21swapper/020:25:210
123740299422,38cyclictest0-21swapper/020:25:210
123740299421,36cyclictest0-21swapper/023:25:010
1237405994131,6cyclictest1270610-21grep22:20:282
1237405994126,9cyclictest0-21swapper/221:40:292
1237403994132,5cyclictest0-21swapper/123:40:001
1237403994130,8cyclictest0-21swapper/119:20:001
1237403994128,8cyclictest0-21swapper/122:45:011
1237403994126,8cyclictest0-21swapper/120:55:201
1237402994135,3cyclictest0-21swapper/021:30:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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