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2026-03-11 - 15:58

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 Wed Mar 11, 2026 12:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16002991118,64cyclictest0-21swapper/008:10:150
160029910726,36cyclictest0-21swapper/008:00:150
160029910726,36cyclictest0-21swapper/008:00:150
52972930,5sleep31600599cyclictest12:35:243
5482890,2sleep00-21swapper/009:15:500
168022880,2sleep30-21swapper/312:10:203
263602850,2sleep30-21swapper/311:42:343
16004998211,18cyclictest7950irq/56-dwc_otg_10:25:072
1600299823,64cyclictest0-21swapper/007:10:040
16004998112,57cyclictest16537-21fschecks_time08:40:192
16002997814,61cyclictest15249-21sh10:50:180
16002997814,61cyclictest15249-21sh10:50:180
74782770,2sleep30-21swapper/309:25:023
48722770,2sleep20-21swapper/211:16:122
48722770,2sleep20-21swapper/211:16:122
1600299778,56cyclictest26891-21modprobe09:10:020
16002997717,38cyclictest24671-21/usr/sbin/munin11:40:240
1600399762,57cyclictest3628-21/usr/sbin/munin08:05:161
16002997615,48cyclictest3275-21aten_rbpower_en11:15:180
16002997615,48cyclictest3275-21aten_rbpower_en11:15:180
16002997614,49cyclictest21401-21sed09:40:250
248752750,2sleep10-21swapper/112:20:161
172882750,5sleep11600399cyclictest10:14:121
1600499753,11cyclictest0-21swapper/207:10:042
1600299753,46cyclictest12718-21/usr/sbin/munin12:05:200
8582730,3sleep337-21rcuc/310:32:583
8582730,3sleep337-21rcuc/310:32:583
1600299732,53cyclictest0-21swapper/011:50:160
16002997321,49cyclictest19761-21apt-get11:35:120
1600399721,39cyclictest19757-21awk11:35:121
154712720,2sleep10-21swapper/109:34:181
294882710,1sleep00-21swapper/010:28:320
1600299716,44cyclictest7413-21tr11:20:160
16002997116,11cyclictest10932-21grep10:05:300
16004997023,7cyclictest7850irq/56-dwc_otg_10:30:122
16004997023,7cyclictest7850irq/56-dwc_otg_10:30:122
16002997047,5cyclictest0-21swapper/010:45:140
16002997014,47cyclictest16580-21ssh09:35:170
1600399694,41cyclictest17995-21/usr/sbin/munin08:45:301
1600399694,41cyclictest17995-21/usr/sbin/munin08:45:301
1600299699,56cyclictest24449-21grep07:30:280
16002996910,23cyclictest14355-21ssh09:32:210
1600299688,47cyclictest0-21swapper/009:13:160
1600299688,43cyclictest0-21swapper/012:35:260
1600299686,59cyclictest26082-21http10:25:010
16002996817,37cyclictest4020-21sh10:36:090
16002996813,52cyclictest0-21swapper/010:03:000
1600499673,11cyclictest0-21swapper/207:15:122
1600299679,47cyclictest0-21swapper/012:17:100
1600299674,54cyclictest0-21swapper/012:00:020
16002996712,41cyclictest11225-21ssh09:29:200
16002996712,41cyclictest11225-21ssh09:29:200
16002996711,53cyclictest21550-21ssh10:19:230
1600399661,52cyclictest0-21swapper/112:08:471
1600399661,40cyclictest26863-21/usr/sbin/munin10:25:191
1600299668,43cyclictest0-21swapper/011:12:530
1600299667,51cyclictest0-21swapper/009:20:190
16002996612,36cyclictest0-21swapper/010:55:300
1600399653,56cyclictest0-21swapper/107:10:041
1600399651,55cyclictest6740-21ssh09:23:561
1600399651,48cyclictest16202-21apt-get08:40:121
1600399651,39cyclictest22127-21missed_timers07:25:251
1600399651,35cyclictest7750irq/56-dwc_otg12:25:181
1600299659,44cyclictest0-21swapper/010:11:200
1600299656,49cyclictest30253-21runrttasks07:49:120
1600299652,42cyclictest0-21swapper/011:30:130
16002996512,41cyclictest24963-21/usr/sbin/munin09:45:250
16002996512,41cyclictest24963-21/usr/sbin/munin09:45:250
20032640,1sleep10-21swapper/111:52:101
1600399641,43cyclictest7970-21ssh12:00:041
1600399641,42cyclictest19329-21ssh11:34:511
1600399641,39cyclictest16556-21ssh09:35:161
1600299647,22cyclictest0-21swapper/008:25:140
1600299645,46cyclictest0-21swapper/010:30:160
1600299645,46cyclictest0-21swapper/010:30:160
16002996418,39cyclictest8988-21ssh12:00:260
16002996417,28cyclictest17995-21/usr/sbin/munin08:45:310
16002996417,28cyclictest17995-21/usr/sbin/munin08:45:310
16002996411,32cyclictest28739-21apt-get12:25:120
16002996410,44cyclictest25610-21mii-tool07:35:210
16002996410,41cyclictest16182-21chrt08:40:070
1600499635,5cyclictest7950irq/56-dwc_otg_09:35:262
1600499633,10cyclictest7950irq/56-dwc_otg_09:10:212
1600399633,39cyclictest531-21ssh09:54:421
1600399631,53cyclictest29927-21ssh09:12:551
1600399631,36cyclictest2029-21ssh12:31:041
1600399631,34cyclictest11445-21ssh09:29:421
1600399631,34cyclictest11445-21ssh09:29:421
1600499624,10cyclictest0-21swapper/211:53:012
1600399621,46cyclictest22050-21/usr/sbin/munin09:40:321
1600399621,44cyclictest25160-21ssh11:01:451
1600299624,48cyclictest0-21swapper/009:50:250
16002996211,38cyclictest24714-21chrt09:01:530
16004996117,41cyclictest5031-21if_wlan012:35:202
1600399611,50cyclictest2276-21ssh09:18:471
1600399611,42cyclictest24058-21ntp_states07:30:241
1600399611,41cyclictest7942-21rm10:02:431
1600299619,36cyclictest0-21swapper/008:05:150
1600299616,44cyclictest0-21swapper/011:48:160
1600299616,44cyclictest0-21swapper/011:48:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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