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2025-10-29 - 09:02

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #8

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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  Congatec
Click here to display the system's profile data.
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.
Unexpectedly long latencies may be caused by SMIs
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 rackeslot8s.osadl.org (updated Wed Oct 29, 2025 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
244582699754748,5cyclictest2491468-21kworker/3:0+events19:59:503
244581899749745,3cyclictest2548040-21kworker/2:1+events20:36:372
244582699746740,5cyclictest2491468-21kworker/3:0+events21:00:223
244582699744740,3cyclictest2603852-21kworker/3:1+events21:23:293
244581899744740,3cyclictest2548040-21kworker/2:1+events20:30:552
244582699743738,4cyclictest2491468-21kworker/3:0+events20:50:223
244582699743736,6cyclictest2815658-21turbostat00:09:553
244582699741736,4cyclictest2778263-21turbostat23:39:553
244581199741735,5cyclictest2407093-21kworker/1:2+events21:17:001
244581899739735,3cyclictest2722200-21kworker/2:2+events00:08:592
244581899739735,3cyclictest2722200-21kworker/2:2+events00:01:172
244581199739731,6cyclictest2407093-21kworker/1:2+events22:15:211
244581199739731,6cyclictest2407093-21kworker/1:2+events22:15:211
244582699737733,3cyclictest2452103-21turbostat19:19:563
244582699737723,8cyclictest2491468-21kworker/3:0+events20:20:213
244581199736728,6cyclictest2407093-21kworker/1:2+events19:15:221
244582699734728,5cyclictest2622754-21turbostat21:34:553
244581199734730,3cyclictest2407093-21kworker/1:2+events22:42:501
244582699733730,2cyclictest2603852-21kworker/3:1+events00:29:243
244582699733730,2cyclictest2603852-21kworker/3:1+events00:29:233
244582699732726,5cyclictest2466914-21turbostat19:29:553
244582699730727,2cyclictest2603852-21kworker/3:1+events21:42:123
244582699727720,6cyclictest2603852-21kworker/3:1+events23:45:203
244581199726723,2cyclictest2407093-21kworker/1:2+events22:14:151
244582699725722,2cyclictest2603852-21kworker/3:1+events23:16:373
244582699725722,2cyclictest2603852-21kworker/3:1+events21:54:333
244582699725721,3cyclictest2603852-21kworker/3:1+events22:45:223
244582699724720,3cyclictest2603852-21kworker/3:1+events23:01:263
244582699724720,3cyclictest2603852-21kworker/3:1+events22:59:103
244581199724719,4cyclictest2407093-21kworker/1:2+events22:00:211
244582699722719,2cyclictest2603852-21kworker/3:1+events23:14:223
244582699722719,2cyclictest2603852-21kworker/3:1+events00:23:033
244582699722718,3cyclictest2603852-21kworker/3:1+events23:58:293
244582699721718,2cyclictest2491468-21kworker/3:0+events20:56:493
244582699721717,3cyclictest1827525-21kworker/3:1+events19:33:053
244582699720715,4cyclictest1827525-21kworker/3:1+events19:40:203
244581199720717,2cyclictest2407093-21kworker/1:2+events19:12:191
244582699719716,2cyclictest2491468-21kworker/3:0+events20:42:553
244582699719716,2cyclictest2491468-21kworker/3:0+events20:14:313
244582699719716,2cyclictest2491468-21kworker/3:0+events20:14:303
244582699719715,3cyclictest2603852-21kworker/3:1+events00:33:143
244582699719714,4cyclictest2603852-21kworker/3:1+events23:40:213
244582699718715,2cyclictest2603852-21kworker/3:1+events21:45:203
244582699718714,3cyclictest2491468-21kworker/3:0+events20:28:273
244582699717714,2cyclictest2603852-21kworker/3:1+events23:06:283
244582699717714,2cyclictest2603852-21kworker/3:1+events21:36:253
244582699717714,2cyclictest2603852-21kworker/3:1+events00:36:043
244582699717713,3cyclictest2603852-21kworker/3:1+events22:50:223
244582699717713,3cyclictest2491468-21kworker/3:0+events20:01:383
244582699716712,3cyclictest2603852-21kworker/3:1+events23:51:063
244582699716712,3cyclictest2491468-21kworker/3:0+events21:10:223
244582699716712,3cyclictest2491468-21kworker/3:0+events20:19:533
244582699716712,3cyclictest2491468-21kworker/3:0+events20:07:513
244582699716712,3cyclictest1827525-21kworker/3:1+events19:38:023
244581199716713,2cyclictest2407093-21kworker/1:2+events22:38:271
244581199716713,2cyclictest2407093-21kworker/1:2+events21:57:091
244582699715710,4cyclictest2603852-21kworker/3:1+events23:31:303
244582699715710,3cyclictest2603852-21kworker/3:1+events21:28:033
244582699715710,3cyclictest2491468-21kworker/3:0+events21:08:393
244582699714710,3cyclictest2603852-21kworker/3:1+events23:27:553
244582699714710,3cyclictest2603852-21kworker/3:1+events00:10:443
244582699714710,3cyclictest1827525-21kworker/3:1+events19:23:123
244582699714709,4cyclictest2603852-21kworker/3:1+events00:16:463
244582699713709,3cyclictest2491468-21kworker/3:0+events19:52:343
244582699713708,4cyclictest1827525-21kworker/3:1+events19:45:203
244581199712709,2cyclictest2407093-21kworker/1:2+events22:28:121
244582699711707,3cyclictest2603852-21kworker/3:1+events23:22:163
244581199710706,3cyclictest2597951-21turbostat21:14:561
244581199709706,2cyclictest2407093-21kworker/1:2+events22:31:381
244581199708705,2cyclictest2407093-21kworker/1:2+events22:08:351
244581199694691,2cyclictest2407093-21kworker/1:2+events22:22:331
244582699693687,5cyclictest2566660-21turbostat20:49:563
244581199687683,3cyclictest2647624-21turbostat21:54:551
244580499687683,3cyclictest2560425-21turbostat20:44:550
244580499681675,4cyclictest2566553-21kworker/0:2+events20:47:290
244582699666661,4cyclictest2709682-21turbostat22:44:553
2445811996600,657cyclictest2579010-21runrttasks20:54:531
244581899656653,2cyclictest2541782-21turbostat20:29:552
244582699641636,4cyclictest2554224-21turbostat20:39:553
244581899623619,3cyclictest2803119-21turbostat23:59:552
244582699610606,3cyclictest2604124-21turbostat21:19:563
25531482300,1sleep00-21swapper/020:30:200
2445826992721,4cyclictest2709664-21cron22:40:003
2445818992117,3cyclictest2834203-21cron00:20:002
2445818992117,3cyclictest2750524-21kthreadcore23:10:202
2445811992117,3cyclictest0-21swapper/121:40:001
2445811992016,2cyclictest0-21swapper/100:00:001
2445811992012,1cyclictest0-21swapper/123:45:001
2445818991914,4cyclictest2709705-21sendmail22:40:002
2445818991913,4cyclictest2473109-21cron19:30:002
2445818991815,2cyclictest2481030-21kthreadcore19:35:172
2445818991814,2cyclictest0-21swapper/223:34:592
2445818991813,3cyclictest506-21in:imuxsock19:15:012
2445811991816,1cyclictest2759602-21cron23:20:001
244581899176,9cyclictest2592231-21uniq21:05:152
2445818991715,1cyclictest2445791-21cyclictest19:50:012
2445818991713,3cyclictest3763191-21systemd-journal21:05:012
2445804991715,1cyclictest0-21swapper/020:10:000
2445804991714,2cyclictest2778615-21cpuspeed_turbos23:35:120
2445804991711,4cyclictest3763191-21systemd-journal19:15:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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