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2026-08-25 - 15:19

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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.
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 rack7slot7s.osadl.org (updated Tue Aug 25, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2585129365,9sleep00-21swapper/007:05:090
2584429263,9sleep30-21swapper/307:05:043
2776728874,10sleep20-21swapper/207:07:162
2764628669,13sleep10-21swapper/107:05:431
172162600,0sleep30-21swapper/312:20:283
71292470,0sleep10-21swapper/110:18:561
28074992727,0cyclictest0-21swapper/310:22:443
2806899270,1cyclictest0-21swapper/110:52:231
2807499252,22cyclictest0-21swapper/309:13:533
2806899250,4cyclictest0-21swapper/110:35:011
28074992423,1cyclictest0-21swapper/309:17:573
2806899240,0cyclictest0-21swapper/109:36:101
2807499220,19cyclictest0-21swapper/310:15:143
2807199220,19cyclictest0-21swapper/209:20:512
2806899221,18cyclictest0-21swapper/112:20:221
2806899220,1cyclictest0-21swapper/110:01:171
28074992117,3cyclictest12968-21kworker/3:009:22:423
2807499210,18cyclictest0-21swapper/311:34:193
2806499210,2cyclictest0-21swapper/012:02:210
2806899203,11cyclictest38150irq/131-snd_hda07:15:141
2806899202,9cyclictest0-21swapper/108:05:141
2806899200,3cyclictest0-21swapper/111:36:301
28074991918,1cyclictest0-21swapper/309:45:133
2807199190,18cyclictest0-21swapper/209:51:122
28068991914,5cyclictest38150irq/131-snd_hda11:58:491
28068991914,2cyclictest0-21swapper/108:20:111
2806899190,1cyclictest0-21swapper/112:39:561
2806899190,0cyclictest0-21swapper/112:31:181
92882180,0sleep10-21swapper/109:21:261
2807499182,15cyclictest0-21swapper/312:05:153
28071991817,1cyclictest0-21swapper/209:58:122
2807199180,17cyclictest0-21swapper/212:10:222
28068991817,1cyclictest0-21swapper/111:10:241
28068991815,2cyclictest0-21swapper/107:40:201
2807499170,1cyclictest0-21swapper/311:48:153
2807499170,16cyclictest0-21swapper/309:44:143
28071991712,2cyclictest0-21swapper/211:47:182
2807199170,1cyclictest0-21swapper/209:15:132
2806899175,8cyclictest0-21swapper/111:40:141
2806899171,1cyclictest7584-21munin-run07:35:001
2806499177,7cyclictest477-21rs:main0
2806499176,7cyclictest13-21ksoftirqd/011:53:380
2806499174,1cyclictest0-21swapper/011:55:130
28064991716,1cyclictest0-21swapper/012:17:160
28064991712,3cyclictest9740-21ls10:00:260
2806499170,16cyclictest0-21swapper/010:52:350
28074991615,1cyclictest0-21swapper/311:22:003
28074991614,1cyclictest0-21swapper/312:16:023
28074991611,3cyclictest484-21NetworkManager11:53:433
2807199162,12cyclictest49-21kcompactd010:34:012
28068991616,0cyclictest0-21swapper/110:22:441
28068991615,1cyclictest0-21swapper/110:28:591
28068991615,1cyclictest0-21swapper/107:10:201
28068991612,4cyclictest25-21ksoftirqd/108:35:121
2806899160,16cyclictest0-21swapper/111:30:341
28064991612,3cyclictest20869-21diskmemload11:04:150
2807199150,1cyclictest0-21swapper/210:51:162
2806899150,14cyclictest0-21swapper/112:26:371
2806499154,6cyclictest17311-21munin-run07:55:000
2806499151,3cyclictest0-21swapper/007:41:550
28064991512,2cyclictest10357-21sh11:00:000
2806499150,14cyclictest0-21swapper/011:09:300
2807499146,4cyclictest225-21systemd-journal07:55:003
28074991410,2cyclictest8471-21sed08:40:253
28074991410,2cyclictest7455-21wc11:55:253
28074991410,2cyclictest13318-21ssh11:40:153
2807499140,2cyclictest0-21swapper/310:56:433
2807199148,5cyclictest1026-21ssh09:35:422
2807199143,10cyclictest20869-21diskmemload09:10:492
2807199142,3cyclictest20869-21diskmemload11:15:052
28071991411,2cyclictest10837-21grep10:20:242
2807199140,13cyclictest1421-21sed07:20:172
2806899140,13cyclictest0-21swapper/111:20:141
2806499149,3cyclictest32299-21wc09:35:190
28064991410,3cyclictest13767-21ssh11:20:270
2806499140,12cyclictest20195-21grep10:45:250
2806499140,0cyclictest0-21swapper/008:10:130
2807499139,3cyclictest3516-21grep07:25:153
2807499139,3cyclictest19386-21sed07:55:263
2807499139,2cyclictest18796-21grep10:45:143
2807499139,2cyclictest11328-21cron08:50:003
2807499138,3cyclictest29055-21cut07:10:243
28074991313,0cyclictest0-21swapper/309:25:263
28074991310,2cyclictest8890-21head12:35:173
28074991310,2cyclictest3501-21grep10:35:263
28074991310,2cyclictest27354-21basename08:15:143
28074991310,2cyclictest17143-21sed09:00:183
28074991310,2cyclictest17143-21sed09:00:183
28074991310,2cyclictest15621-21grep08:55:263
28074991310,2cyclictest14917-21cron07:50:003
2807199139,3cyclictest5123-21tr11:35:142
2807199139,3cyclictest20274-21tr08:00:122
2807199137,3cyclictest32-21ksoftirqd/210:10:482
28071991310,2cyclictest9240-21ls07:35:212
28071991310,2cyclictest30536-21grep11:50:172
28071991310,2cyclictest26491-21cat08:10:252
28071991310,2cyclictest16075-21cron09:00:012
2806899138,4cyclictest788-21egrep07:20:141
28068991312,1cyclictest0-21swapper/109:17:181
28068991310,2cyclictest736-21wc09:55:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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