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2026-04-19 - 08:12

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 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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack7slot3s.osadl.org (updated Sun Apr 19, 2026 00:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
534622640,1sleep00-21swapper/004:26:110
940621040,5sleep1639999cyclictest09:34:561
940621040,5sleep1639999cyclictest09:34:561
6398998682,3cyclictest7750irq/56-dwc_otg08:20:210
6398998318,46cyclictest23352-21sed07:15:460
6398998317,58cyclictest27289-21sed09:56:050
6398998317,58cyclictest27289-21sed09:56:050
6398998217,59cyclictest7685-21tail06:01:130
639899814,31cyclictest9960-21kworker/u8:208:05:570
6398998115,40cyclictest12933-21unixbench_multi04:46:150
6398998012,58cyclictest0-21swapper/009:00:530
6398998012,58cyclictest0-21swapper/009:00:530
6398997818,42cyclictest5082-21fschecks_time08:11:020
6398997817,47cyclictest13880-21aten_rbpower_en06:20:570
6398997813,51cyclictest23999-21sh06:37:450
6398997811,55cyclictest0-21swapper/004:36:010
6398997717,47cyclictest15339-21grep07:06:030
6398997716,51cyclictest30595-21taskset05:36:080
6398997712,61cyclictest25743-21fschecks_time08:36:020
6398997712,61cyclictest25743-21fschecks_time08:36:020
6398997617,36cyclictest6809-21awk09:31:080
6398997617,36cyclictest6809-21awk09:31:080
6398997616,48cyclictest8463-21ssh06:57:280
6398997616,48cyclictest8463-21ssh06:57:280
6398997613,44cyclictest32575-21latency_hist08:05:460
6398997523,38cyclictest21220-21/usr/sbin/munin05:11:030
6398997521,48cyclictest0-21swapper/005:45:590
6398997514,42cyclictest0-21swapper/007:25:490
6398997513,50cyclictest31645-21sh06:46:130
639899747,52cyclictest0-21swapper/008:35:460
6398997418,39cyclictest24674-21ssh07:55:590
6398997418,39cyclictest24674-21ssh07:55:590
6398997414,41cyclictest0-21swapper/009:55:370
6398997411,43cyclictest11148-21grep09:36:100
219902740,2sleep021989-21ssh09:11:000
6398997314,50cyclictest20492-21/usr/sbin/munin07:51:100
6398997313,48cyclictest14807-21ssh08:22:070
6398997313,41cyclictest0-21swapper/009:25:580
199712730,1sleep20-21swapper/209:46:372
6398997223,40cyclictest9196-21/usr/sbin/munin07:36:150
6398997217,40cyclictest28005-21runrttasks09:17:210
639899719,51cyclictest0-21swapper/008:49:530
6398997122,24cyclictest0-21swapper/007:45:570
6398997121,39cyclictest20935-21sh09:09:320
6398997116,38cyclictest11897-21runrttasks08:58:090
6398997115,45cyclictest0-21swapper/006:40:590
6398997114,47cyclictest19237-21ssh08:27:400
6398997112,43cyclictest5452-21sh06:54:400
6398997017,37cyclictest27086-21ssh07:20:100
6398997015,44cyclictest20245-21ssh09:47:070
6398997012,42cyclictest0-21swapper/007:21:010
6398997012,42cyclictest0-21swapper/007:21:010
6398997011,43cyclictest7486-21sh08:52:390
6398996917,37cyclictest32416-21taskset09:22:510
6398996912,47cyclictest18714-21timerwakeupswit06:31:140
6398996860,5cyclictest0-21swapper/005:30:580
6398996813,40cyclictest0-21swapper/005:41:400
221372680,3sleep122092-21ssh09:11:011
639899678,40cyclictest709-21kworker/u8:006:00:460
639899678,40cyclictest709-21kworker/u8:006:00:460
6398996718,42cyclictest10559-21latency04:41:060
6398996713,40cyclictest0-21swapper/007:31:320
6398996613,44cyclictest15940-21ssh07:45:360
6398996515,36cyclictest11330-21taskset07:01:060
639899642,46cyclictest0-21swapper/009:40:570
6398996421,34cyclictest24150-21chrt05:19:510
6398996421,34cyclictest24150-21chrt05:19:510
6398996415,35cyclictest0-21swapper/006:26:300
6398996411,41cyclictest0-21swapper/008:41:370
6401996322,22cyclictest2160-21/usr/sbin/munin09:26:002
639999635,23cyclictest7995-21ssh07:35:571
6398996315,37cyclictest19061-21awk05:05:560
6401996219,8cyclictest7950irq/56-dwc_otg_09:50:582
6398996213,29cyclictest25767-21seq05:22:330
639899617,42cyclictest0-21swapper/006:18:260
6398996112,32cyclictest0-21swapper/005:26:050
639899609,39cyclictest0-21swapper/004:35:120
639899608,45cyclictest0-21swapper/005:00:040
6398996013,9cyclictest0-21swapper/004:54:470
6398996010,40cyclictest0-21swapper/005:02:460
6398996010,34cyclictest0-21swapper/006:06:490
6401995821,11cyclictest30837-21/usr/sbin/munin05:36:112
6398995813,23cyclictest11480-21chrt06:12:080
6401995730,12cyclictest32135-21apt-get07:25:572
640199567,30cyclictest0-21swapper/205:30:582
6401995517,19cyclictest8808-21ssh09:33:522
6401995517,19cyclictest8808-21ssh09:33:522
640299548,10cyclictest7850irq/56-dwc_otg_07:35:573
6401995419,20cyclictest16403-21aten_rbpower_cu07:45:592
6401995417,21cyclictest16345-21sh08:24:562
6398995314,36cyclictest4199-21chrt05:52:480
6401995221,7cyclictest12756-21ls04:46:132
6401995216,21cyclictest22487-21rm07:14:372
6401995215,24cyclictest26520-21ssh07:57:152
6401995215,24cyclictest26520-21ssh07:57:152
6401995215,21cyclictest31063-21ssh08:41:352
6401995214,11cyclictest30104-21ssh07:23:012
6401995214,11cyclictest30104-21ssh07:23:012
640299513,10cyclictest7950irq/56-dwc_otg_04:40:583
640199517,28cyclictest486-21ssh08:05:522
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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