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2025-12-13 - 14:17

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 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.
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 Sat Dec 13, 2025 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31797519912320,1228cyclictest35507642sleep300:05:013
31797519911601,1156cyclictest33004162sleep320:44:563
3179751999850,982cyclictest3413266-21sleep22:15:013
3179751993810,369cyclictest3463155-21turbostat22:59:563
3179751993550,351cyclictest3179650-21turbostat19:14:553
3179751991815,1cyclictest0-21swapper/320:45:123
317975199171,12cyclictest3544335-21taskset00:00:003
317975199171,12cyclictest3443398-21taskset22:35:183
317975199166,8cyclictest3238114-21turbostat19:59:563
317975199165,8cyclictest3287968-21turbostat20:35:003
3179751991613,1cyclictest0-21swapper/321:40:223
317975199161,12cyclictest3331912-21taskset21:09:573
3179751991513,1cyclictest0-21swapper/323:30:363
3179751991513,1cyclictest0-21swapper/323:23:313
3179751991513,1cyclictest0-21swapper/322:29:013
3179751991513,1cyclictest0-21swapper/320:50:143
3179751991513,0cyclictest0-21swapper/323:49:593
3179751991512,1cyclictest0-21swapper/321:50:013
3179751991512,1cyclictest0-21swapper/320:01:183
317975199151,11cyclictest3494326-21turbostat23:20:003
317975199151,11cyclictest3346144-21taskset21:20:143
317975199151,11cyclictest3200399-21taskset19:24:563
317975199151,10cyclictest3281151-21taskset20:25:223
317975199141,9cyclictest3450963-21taskset22:45:083
317975199141,9cyclictest32196282sleep319:40:113
3179751991413,0cyclictest0-21swapper/320:57:193
3179751991413,0cyclictest0-21swapper/300:39:183
3179751991412,1cyclictest0-21swapper/323:00:073
3179751991412,1cyclictest0-21swapper/319:52:073
3179751991412,1cyclictest0-21swapper/319:52:073
3179751991411,1cyclictest0-21swapper/323:50:173
3179751991411,1cyclictest0-21swapper/323:05:473
3179751991411,1cyclictest0-21swapper/322:05:173
3179751991411,1cyclictest0-21swapper/320:36:383
3179751991411,1cyclictest0-21swapper/320:17:143
3179751991411,1cyclictest0-21swapper/320:05:533
317975199141,10cyclictest3460587-21taskset22:50:123
317975199141,10cyclictest3363557-21taskset21:35:123
317975199141,10cyclictest3343867-21taskset21:15:223
317975199141,10cyclictest3319692-21taskset21:00:113
317975199135,6cyclictest3363008-21taskset21:33:453
317975199131,9cyclictest3577725-21taskset00:25:123
317975199131,9cyclictest3568532-21taskset00:15:153
317975199131,9cyclictest3544580-21taskset00:00:083
317975199131,9cyclictest3487735-21taskset23:10:253
317975199131,9cyclictest3257072-21taskset20:10:043
317975199131,8cyclictest34447122sleep322:40:093
3179751991312,0cyclictest0-21swapper/323:42:153
3179751991312,0cyclictest0-21swapper/322:21:023
3179751991312,0cyclictest0-21swapper/322:21:013
3179751991311,1cyclictest0-21swapper/323:37:323
3179751991311,1cyclictest0-21swapper/322:00:133
3179751991311,1cyclictest0-21swapper/319:16:203
317975199131,10cyclictest3356818-21taskset21:29:313
317975199131,10cyclictest3337405-21taskset21:10:203
3179751991311,0cyclictest0-21swapper/320:22:433
3179751991310,1cyclictest0-21swapper/323:25:463
3179751991310,1cyclictest0-21swapper/319:45:233
317975199130,10cyclictest3206082-21chrt19:25:193
34949782120,1sleep13495448-21irqcore23:20:161
34784832124,2sleep2431ktimers/223:05:152
32383532120,3sleep03238386-21apt-get19:55:100
317975199124,6cyclictest3574950-21taskset00:20:193
317975199121,9cyclictest3587837-21chrt00:30:263
3179751991210,1cyclictest0-21swapper/322:15:223
3179751991210,1cyclictest0-21swapper/322:15:223
3179751991210,1cyclictest0-21swapper/319:35:303
317975199120,9cyclictest3560628-21chrt00:10:133
317975199120,9cyclictest3432219-21taskset22:30:063
317975199120,9cyclictest3382057-21taskset21:50:033
317975199120,5cyclictest0-21swapper/319:30:173
31796152120,7sleep13179676-21munin-run19:10:001
301798120,4rtkit-daemon636-21snmpd22:00:021
35507732110,2sleep20-21swapper/200:05:092
35257792111,2sleep00-21swapper/023:45:070
34825102111,2sleep20-21swapper/223:10:132
33633732111,6sleep13363395-21apt-get21:35:121
32198812110,5sleep23220080-21if_eno119:40:142
31799592110,8sleep03180108-21df_inode19:10:120
317975199110,9cyclictest3394281-21taskset21:59:523
35310032100,7sleep23531135-21sed23:45:172
34655442104,3sleep23467727-21kthreadcore22:55:142
33004202101,6sleep23300443-21turbostat20:45:012
32006522101,6sleep03200746-21dpkg19:25:020
301798100,6rtkit-daemon317-21systemd-udevd22:09:331
3544544291,4sleep23544577-21apt-get00:00:082
3525815290,2sleep13525959-21df23:45:081
3450927292,4sleep23450960-21apt-get22:45:092
3313410290,4sleep23312947-21apt-get20:55:022
3218319291,5sleep03218480-21ntpq19:35:190
30179890,6rtkit-daemon492-21gmain20:04:051
30179890,5rtkit-daemon3425991-21/usr/sbin/munin22:25:101
30179890,5rtkit-daemon3414054-21irqcore22:15:121
30179890,5rtkit-daemon3414054-21irqcore22:15:111
30179890,5rtkit-daemon3362420-21python321:30:211
30179890,5rtkit-daemon3207664-21ps19:30:151
30179890,5rtkit-daemon317-21systemd-udevd22:31:341
30179890,4rtkit-daemon3552241-21uname00:05:141
30179890,4rtkit-daemon3534177-21cat23:50:131
30179890,4rtkit-daemon3388324-21apt-get21:55:081
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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