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2026-03-14 - 19:20

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 Sat Mar 14, 2026 12:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3166525580,5sleep0101ktimersoftd/007:05:300
1859621100,2sleep00-21swapper/010:35:040
326479910854,9cyclictest7850irq/56-dwc_otg_12:20:150
3264799997,72cyclictest0-21swapper/007:55:180
3264799982,69cyclictest366-21fschecks_time12:10:200
3264799981,79cyclictest0-21swapper/010:15:150
3264799962,74cyclictest20528-21timerwakeupswit11:15:300
3264799961,83cyclictest8635-21ls11:40:290
3264799961,79cyclictest6536-21fschecks_count10:20:200
3264799961,77cyclictest20556-21ssh09:20:240
3264799961,76cyclictest13017-21ssh09:50:130
3264799941,82cyclictest15286-21apt-config09:15:040
32647999241,9cyclictest7750irq/56-dwc_otg10:55:160
32647999126,48cyclictest7750irq/56-dwc_otg09:25:310
3264799911,78cyclictest29276-21/usr/sbin/munin12:05:280
3264799901,74cyclictest13528-21rm10:28:380
3264799891,80cyclictest29549-21sh11:26:360
3264799891,76cyclictest17843-21seq11:51:330
3264799891,75cyclictest0-21swapper/007:40:220
3264799891,72cyclictest20845-21rm10:36:550
3264799881,69cyclictest0-21swapper/011:32:060
3264799881,68cyclictest14850-21ssh11:09:560
3264799871,70cyclictest27005-21ssh10:45:130
3264799871,68cyclictest18079-21ssh12:30:490
3264799871,67cyclictest29781-21ls08:30:240
3264799871,65cyclictest15760-21cut09:15:170
3264799861,71cyclictest6200-21ssh12:16:470
3264799861,70cyclictest3720-21taskset09:39:150
3264799861,70cyclictest15124-21ssh12:27:590
3264799861,35cyclictest1486-21grep08:40:310
3264799851,72cyclictest30141-21ssh09:31:090
3264799851,71cyclictest0-21swapper/008:24:550
3264799851,70cyclictest15482-21/usr/sbin/munin11:10:170
3264799851,69cyclictest0-21swapper/011:46:040
3264799851,68cyclictest25256-21ssh10:42:250
3264799841,71cyclictest0-21swapper/011:01:430
3264799841,69cyclictest0-21swapper/007:14:370
3264799841,68cyclictest23290-21taskset08:11:540
3264799841,60cyclictest21631-21awk12:35:290
3264799841,43cyclictest0-21swapper/007:35:030
3264799831,71cyclictest0-21swapper/011:59:560
3264799821,68cyclictest0-21swapper/009:47:270
3264799821,66cyclictest15345-21chrt07:50:240
3264799821,64cyclictest6654-21ssh09:41:560
3264799821,62cyclictest3987-21/usr/sbin/munin08:50:300
3264799821,62cyclictest3987-21/usr/sbin/munin08:50:300
32647998120,39cyclictest25049-21sh10:04:110
3264799811,66cyclictest0-21swapper/008:35:170
3264799811,61cyclictest0-21swapper/010:06:390
3264799811,49cyclictest3483-21apt-get11:35:160
3264799811,49cyclictest3483-21apt-get11:35:160
3264799802,66cyclictest0-21swapper/007:35:270
3264799801,70cyclictest0-21swapper/011:21:020
3264799801,64cyclictest5430-21latency_hist07:25:050
3264799801,61cyclictest0-21swapper/010:50:320
3264799792,67cyclictest0-21swapper/008:20:030
3264799791,66cyclictest0-21swapper/007:19:320
3264799791,64cyclictest21667-21runrttasks08:09:160
3264799791,64cyclictest21667-21runrttasks08:09:160
32647997827,11cyclictest0-21swapper/009:55:160
3264799782,52cyclictest0-21swapper/007:29:570
3264799781,66cyclictest0-21swapper/009:07:170
3264799771,66cyclictest0-21swapper/010:14:540
3264799771,61cyclictest0-21swapper/008:48:220
3264799771,57cyclictest0-21swapper/007:45:330
3264799761,64cyclictest24456-21ls12:00:200
3264799761,57cyclictest0-21swapper/008:03:590
3264799761,35cyclictest28991-21munin-run08:30:030
3264799751,61cyclictest6126-21grep08:55:200
3264799701,55cyclictest0-21swapper/009:04:360
321112660,2sleep30-21swapper/307:06:423
312812660,3sleep121-21rcuc/109:33:091
100372660,2sleep20-21swapper/212:21:142
157392630,2sleep229-21rcuc/212:29:072
182182580,4sleep218219-21rt-features09:55:292
152252570,2sleep30-21swapper/310:30:243
3264899554,20cyclictest0-21swapper/107:15:151
249932530,2sleep20-21swapper/211:20:482
3265099503,31cyclictest7850irq/56-dwc_otg_12:25:223
3265099493,26cyclictest0-21swapper/308:25:153
3265099448,24cyclictest0-21swapper/310:50:173
32648994413,6cyclictest20970-21ssh09:20:301
3264999432,10cyclictest11506-21fschecks_time11:05:222
3264899434,5cyclictest7850irq/56-dwc_otg_11:15:131
3265099424,23cyclictest0-21swapper/308:55:163
3265099424,21cyclictest27630-21/usr/sbin/munin11:25:193
3264899429,5cyclictest7750irq/56-dwc_otg10:45:041
32648994219,8cyclictest7850irq/56-dwc_otg_07:30:261
32648994214,3cyclictest0-21swapper/109:18:541
107832420,4sleep315918-21kworker/3:012:22:363
3265099411,25cyclictest0-21swapper/312:15:153
3265099411,25cyclictest0-21swapper/309:35:193
32649994110,12cyclictest1053950wget10:25:172
3264899415,6cyclictest24376-21cut12:00:191
32648994122,4cyclictest4030-21wget08:50:161
32648994122,4cyclictest4030-21wget08:50:161
32650994025,6cyclictest5835-21rm09:40:323
3265099401,29cyclictest0-21swapper/308:20:223
3265099401,24cyclictest0-21swapper/310:00:103
3264999407,25cyclictest0-21swapper/207:50:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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