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2025-12-28 - 05:56

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

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 highest latencies:
System rack2slot7s.osadl.org (updated Sat Dec 27, 2025 19:55:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2487885999882,11cyclictest3292855-21sort18:09:561
2487886996354,6cyclictest3291581-21sh18:09:532
2487884996143,15cyclictest3291270-21rm18:09:520
2487886995642,11cyclictest2937377-21Run18:03:522
2487886995547,5cyclictest3313104-21wc18:10:442
2487886995547,5cyclictest3313104-21wc18:10:442
2487884995445,4cyclictest0-21swapper/017:39:470
2487886995245,3cyclictest0-21swapper/217:50:022
2487886995042,5cyclictest2748504-21multi.sh17:41:362
2487886994936,10cyclictest2710265-21if_eth017:39:422
2487885994941,5cyclictest3361459-21rm18:12:391
2487885994941,5cyclictest3361459-21rm18:12:391
2487885994637,5cyclictest2735066-21sh17:41:021
2487885994636,6cyclictest2796908-21execl17:49:411
2487886994537,5cyclictest564-21dbus-daemon17:20:012
2487884994534,9cyclictest2796908-21execl17:49:490
2487884994430,4cyclictest3303906-21rm18:10:230
2487884994430,4cyclictest3303906-21rm18:10:230
2487886994334,5cyclictest2799567-21timerwakeupswit17:55:012
2487886994332,7cyclictest0-21swapper/218:19:472
2487884994236,4cyclictest2737219-21sh17:41:070
2487884994233,5cyclictest151ktimers/017:29:470
2487885994031,6cyclictest3163852-21spawn18:04:151
2487886993928,8cyclictest2638304-21aten2.4-expect17:34:382
2487885993929,6cyclictest2798377-21execl17:50:571
2487884993925,10cyclictest2799988-21fstime17:57:350
248788699381,27cyclictest2492818-21fstime17:24:502
2487884993828,7cyclictest2799729-21unixbench_singl17:55:020
2487885993729,5cyclictest369-21systemd-journal17:15:011
2487884993732,3cyclictest2674124-21tail17:34:590
2487886993529,3cyclictest0-21swapper/217:15:002
2487885993527,5cyclictest2801154-21Run17:59:581
2487885993527,5cyclictest2714668-21od17:40:011
248788599351,31cyclictest2494764-21pipe17:29:471
2487885993426,5cyclictest3376203-21cron18:35:011
2487884993429,3cyclictest2806665-21spawn18:02:500
248788699337,16cyclictest1168-21mta-sts-daemon17:57:012
2487885993326,4cyclictest2647408-21spawn17:34:431
2487885993325,5cyclictest3373304-21munin-plugin-st18:25:001
2487885993323,5cyclictest0-21swapper/117:25:011
2487884993321,9cyclictest3372669-21needreboot18:24:450
2487886993223,5cyclictest3376203-21cron18:35:012
2487886993222,7cyclictest0-21swapper/218:29:502
2487885993225,4cyclictest3373847-21fschecks_time18:29:421
2487885993225,4cyclictest0-21swapper/118:40:011
2487885993222,7cyclictest563-21avahi-daemon18:19:581
248788699302,22cyclictest577-21mta-sts-daemon18:39:512
2487886993019,8cyclictest3373296-21idleruntime-cro18:25:002
2487884993024,4cyclictest3294560-21kworker/u8:27-xprtiod18:20:000
2487884993019,8cyclictest2489301-21head17:09:530
2487884993019,8cyclictest2489301-21head17:09:530
2487886992822,3cyclictest0-21swapper/217:30:012
2487884992722,2cyclictest0-21swapper/018:40:010
2487885992617,6cyclictest1181433-21cups-browsed17:08:351
2487885992617,6cyclictest1181433-21cups-browsed17:08:351
2487884992621,3cyclictest151ktimers/018:29:510
2487884992619,4cyclictest2493956-21unixbench_multi17:24:570
2487886992516,4cyclictest0-21swapper/217:09:382
2487886992516,4cyclictest0-21swapper/217:09:382
2487884992520,2cyclictest0-21swapper/017:15:000
2487884992513,8cyclictest12450irq/32-eth018:34:510
248788499239,12cyclictest2492489-21idleruntime-cro17:20:010
248788599211,15cyclictest2492032-21ps17:19:531
248788799194,8cyclictest0-21swapper/317:49:553
2487886991913,3cyclictest0-21swapper/217:05:012
248788799184,7cyclictest0-21swapper/317:39:493
248788799183,8cyclictest0-21swapper/318:04:493
248788799182,10cyclictest0-21swapper/317:55:583
248788799175,7cyclictest0-21swapper/318:09:503
248788799172,10cyclictest0-21swapper/317:41:513
248788499177,7cyclictest564-21dbus-daemon17:05:010
248788799161,8cyclictest0-21swapper/317:29:513
248788599161,11cyclictest1-21systemd17:05:011
248788799154,7cyclictest0-21swapper/318:10:063
248788799154,7cyclictest0-21swapper/318:10:063
248788799151,8cyclictest0-21swapper/317:34:473
248788799142,6cyclictest0-21swapper/317:54:563
248788799141,7cyclictest0-21swapper/317:14:483
248788799131,7cyclictest0-21swapper/318:19:473
248788799131,5cyclictest0-21swapper/318:39:473
248788799131,5cyclictest0-21swapper/317:19:473
248788799122,7cyclictest0-21swapper/317:24:463
248788799122,7cyclictest0-21swapper/317:10:013
248788799122,7cyclictest0-21swapper/317:10:013
248788799121,6cyclictest0-21swapper/318:34:483
248788799112,6cyclictest0-21swapper/318:25:003
248788799112,5cyclictest0-21swapper/318:29:493
24878879991,4cyclictest0-21swapper/317:05:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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