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2026-09-03 - 19:22

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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 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
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rack3slot6s.osadl.org (updated Thu Sep 03, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20703210998,6sleep00-21swapper/007:06:250
20950210796,6sleep30-21swapper/307:09:353
20714210684,15sleep10-21swapper/107:06:341
20685210285,12sleep20-21swapper/207:06:102
162852330,1sleep30-21swapper/308:15:173
21019993026,2cyclictest32559-21kworker/u8:010:45:042
21021992926,2cyclictest25436-21kworker/u8:111:57:043
21021992926,2cyclictest2213-21kworker/u8:012:22:043
21015992926,2cyclictest7008-21kworker/u8:209:52:040
21021992825,2cyclictest522-21kworker/u8:210:40:043
21021992825,2cyclictest27527-21kworker/u8:109:19:043
21021992825,2cyclictest12952-21kworker/u8:110:02:043
21016992825,2cyclictest18416-21kworker/u8:211:34:041
21021992724,2cyclictest14859-21kworker/u8:012:03:043
21021992724,2cyclictest11033-21kworker/u8:011:12:043
21019992724,2cyclictest32559-21kworker/u8:010:42:042
21021992623,2cyclictest6814-21kworker/u8:111:22:043
21021992623,2cyclictest522-21kworker/u8:210:28:043
21021992623,2cyclictest522-21kworker/u8:210:28:043
21021992623,2cyclictest21477-21kworker/u8:112:13:043
21021992623,2cyclictest19097-21kworker/u8:010:14:043
21021992623,2cyclictest12570-21kworker/u8:011:28:043
21019992623,2cyclictest11033-21kworker/u8:010:58:042
21016992623,2cyclictest522-21kworker/u8:210:36:041
21015992623,2cyclictest12952-21kworker/u8:110:09:040
21021992522,2cyclictest2213-21kworker/u8:012:28:023
21021992522,2cyclictest21246-21kworker/u8:111:07:043
21019992522,2cyclictest2213-21kworker/u8:012:23:042
21019992522,2cyclictest16206-21ssh12:03:042
21019992522,2cyclictest12952-21kworker/u8:109:59:042
21016992522,2cyclictest11033-21kworker/u8:010:54:051
84912240,1sleep1221ktimersoftd/112:27:491
21021992421,2cyclictest5447-21kworker/u8:009:22:013
21021992421,2cyclictest522-21kworker/u8:210:38:023
21021992421,2cyclictest522-21kworker/u8:210:22:063
21021992421,2cyclictest522-21kworker/u8:210:22:053
21021992421,2cyclictest25436-21kworker/u8:111:52:043
21021992421,2cyclictest18121-21kworker/u8:209:38:043
21021992421,2cyclictest18121-21kworker/u8:209:27:043
21019992421,2cyclictest25355-21kworker/u8:009:31:042
21019992421,2cyclictest1788-21kworker/u8:109:43:042
21016992421,2cyclictest522-21kworker/u8:211:01:041
21016992421,2cyclictest27527-21kworker/u8:109:17:041
21016992421,2cyclictest25355-21kworker/u8:009:33:041
21015992421,2cyclictest25436-21kworker/u8:111:48:040
21015992421,2cyclictest18416-21kworker/u8:212:07:050
314842230,1sleep10-21swapper/107:35:121
21021992320,2cyclictest25355-21kworker/u8:009:32:053
21021992320,2cyclictest14859-21kworker/u8:012:05:043
21021992320,2cyclictest12952-21kworker/u8:110:05:043
21021992320,2cyclictest12952-21kworker/u8:109:58:053
21021992319,3cyclictest2213-21kworker/u8:012:37:043
21016992320,2cyclictest522-21kworker/u8:210:34:041
21016992320,2cyclictest28983-21kworker/u8:212:20:041
21016992320,2cyclictest25436-21kworker/u8:111:58:041
21016992320,2cyclictest18416-21kworker/u8:211:38:051
21016992320,2cyclictest1788-21kworker/u8:109:39:041
21016992320,2cyclictest14859-21kworker/u8:012:01:041
21015992320,2cyclictest28983-21kworker/u8:212:16:040
21015992320,2cyclictest25436-21kworker/u8:111:53:040
21021992219,2cyclictest522-21kworker/u8:210:50:053
21021992219,2cyclictest12570-21kworker/u8:011:30:043
21019992219,2cyclictest522-21kworker/u8:210:29:042
21019992219,2cyclictest522-21kworker/u8:210:29:042
21019992219,2cyclictest28983-21kworker/u8:212:38:042
21019992219,2cyclictest18121-21kworker/u8:209:26:052
21019992219,2cyclictest11033-21kworker/u8:011:18:012
21016992219,2cyclictest7008-21kworker/u8:209:47:051
21016992219,2cyclictest28983-21kworker/u8:212:32:051
21016992219,2cyclictest28983-21kworker/u8:212:19:041
21016992219,2cyclictest27527-21kworker/u8:109:20:041
21016992219,2cyclictest25424-21kworker/u8:007:22:011
21016992219,2cyclictest25355-21kworker/u8:009:44:011
21016992219,2cyclictest21477-21kworker/u8:112:09:041
21015992219,2cyclictest5521-21kworker/u8:110:52:050
21015992219,2cyclictest522-21kworker/u8:210:39:040
21021992118,2cyclictest6333-21kworker/u8:209:04:043
21021992118,2cyclictest25355-21kworker/u8:009:46:043
21021992118,2cyclictest2213-21kworker/u8:012:34:043
21021992118,2cyclictest18416-21kworker/u8:211:38:013
21021992118,2cyclictest1788-21kworker/u8:109:42:043
21021992118,2cyclictest14238-21kworker/u8:207:14:043
21021992118,2cyclictest11033-21kworker/u8:011:19:043
21019992118,2cyclictest6814-21kworker/u8:111:32:042
21019992118,2cyclictest522-21kworker/u8:211:02:062
21019992118,2cyclictest25355-21kworker/u8:009:49:052
21019992118,2cyclictest18416-21kworker/u8:212:08:042
21019992118,2cyclictest18416-21kworker/u8:211:44:042
21019992118,2cyclictest14238-21kworker/u8:207:10:042
2101999210,16cyclictest20637-21kworker/2:111:48:042
2101999210,10cyclictest0-21swapper/211:53:052
21016992118,2cyclictest522-21kworker/u8:210:56:051
21016992118,2cyclictest522-21kworker/u8:210:17:041
21016992118,2cyclictest28983-21kworker/u8:212:39:041
21016992118,2cyclictest26898-21kworker/u8:211:20:011
21016992118,2cyclictest25436-21kworker/u8:111:47:041
21016992118,2cyclictest21477-21kworker/u8:112:10:041
21016992118,2cyclictest21052-21kworker/u8:008:40:011
21016992118,2cyclictest12952-21kworker/u8:109:54:011
21015992118,2cyclictest5521-21kworker/u8:110:48:040
21021992017,2cyclictest522-21kworker/u8:210:30:043
21021992017,2cyclictest25436-21kworker/u8:111:46:043
21019992017,2cyclictest522-21kworker/u8:210:23:042
21019992017,2cyclictest522-21kworker/u8:210:23:042
21019992017,2cyclictest26898-21kworker/u8:211:10:042
21019992017,2cyclictest21246-21kworker/u8:111:05:042
21019992017,2cyclictest13799-21kworker/u8:110:33:042
21019992017,2cyclictest12570-21kworker/u8:011:27:052
2101999200,18cyclictest0-21swapper/209:52:042
21016992017,2cyclictest6333-21kworker/u8:208:16:041
21016992017,2cyclictest522-21kworker/u8:210:22:011
21016992017,2cyclictest522-21kworker/u8:210:22:011
21016992017,2cyclictest25424-21kworker/u8:007:46:051
21016992017,2cyclictest12952-21kworker/u8:109:56:041
21016992011,7cyclictest221ktimersoftd/110:28:051
21016992011,7cyclictest221ktimersoftd/110:28:041
2101699200,18cyclictest0-21swapper/111:13:041
21021991916,2cyclictest25424-21kworker/u8:008:11:043
21021991916,2cyclictest25424-21kworker/u8:008:08:053
21021991916,2cyclictest21052-21kworker/u8:008:36:043
2102199190,2cyclictest0-21swapper/311:01:043
2102199190,2cyclictest0-21swapper/310:18:053
21019991916,2cyclictest28983-21kworker/u8:212:31:042
21019991916,2cyclictest21477-21kworker/u8:112:11:042
21019991916,2cyclictest21052-21kworker/u8:008:35:042
21019991916,2cyclictest12952-21kworker/u8:110:04:042
21019991915,3cyclictest19097-21kworker/u8:010:11:042
2101999190,2cyclictest0-21swapper/210:52:042
2101999190,2cyclictest0-21swapper/210:39:042
21016991916,2cyclictest27527-21kworker/u8:109:14:041
21016991916,2cyclictest25424-21kworker/u8:008:06:041
2101699190,17cyclictest0-21swapper/111:28:041
2101699190,17cyclictest0-21swapper/109:27:041
21015991916,2cyclictest21246-21kworker/u8:111:04:040
21015991916,2cyclictest18416-21kworker/u8:211:40:050
21015991916,2cyclictest18121-21kworker/u8:209:37:050
21015991916,2cyclictest18121-21kworker/u8:209:23:040
21015991916,2cyclictest12952-21kworker/u8:110:00:020
2101599190,2cyclictest0-21swapper/010:42:040
21021991815,2cyclictest27527-21kworker/u8:109:12:043
21021991815,2cyclictest27527-21kworker/u8:109:06:043
21021991815,2cyclictest25424-21kworker/u8:007:56:013
21021991815,2cyclictest25424-21kworker/u8:007:46:013
21021991815,2cyclictest25424-21kworker/u8:007:21:043
21021991815,2cyclictest15514-21kworker/u8:108:22:013
2102199180,2cyclictest0-21swapper/312:18:043
2102199180,2cyclictest0-21swapper/308:40:013
21019991815,2cyclictest27527-21kworker/u8:109:10:042
2101999180,2cyclictest5426-21ssh11:20:052
2101999180,2cyclictest0-21swapper/211:58:042
21016991815,2cyclictest14238-21kworker/u8:207:26:041
21016991815,2cyclictest12952-21kworker/u8:110:07:041
2101699180,16cyclictest0-21swapper/110:02:041
21015991815,2cyclictest26898-21kworker/u8:211:09:040
21015991815,2cyclictest25355-21kworker/u8:009:48:040
21015991815,2cyclictest13799-21kworker/u8:110:32:040
2101599180,16cyclictest0-21swapper/009:43:040
21021991714,2cyclictest6333-21kworker/u8:208:45:043
21021991714,2cyclictest6333-21kworker/u8:207:52:043
21021991714,2cyclictest27527-21kworker/u8:108:51:043
21021991714,2cyclictest21052-21kworker/u8:008:33:053
21021991714,2cyclictest15514-21kworker/u8:108:25:043
21021991714,2cyclictest14238-21kworker/u8:207:19:053
21019991714,2cyclictest6333-21kworker/u8:208:44:042
21019991714,2cyclictest14238-21kworker/u8:207:29:042
2101999170,2cyclictest0-21swapper/211:36:012
2101999170,2cyclictest0-21swapper/209:23:052
21016991714,2cyclictest27527-21kworker/u8:109:08:011
21016991714,2cyclictest21052-21kworker/u8:008:38:041
21016991714,2cyclictest14238-21kworker/u8:207:32:051
21016991714,2cyclictest14238-21kworker/u8:207:18:041
2101699170,2cyclictest0-21swapper/111:52:041
2101699170,2cyclictest0-21swapper/111:42:041
2101699170,2cyclictest0-21swapper/110:13:051
21015991714,2cyclictest522-21kworker/u8:210:18:010
21015991714,2cyclictest25436-21kworker/u8:111:59:040
21015991714,2cyclictest2213-21kworker/u8:012:36:040
21015991714,2cyclictest18416-21kworker/u8:211:37:040
21015991714,2cyclictest14238-21kworker/u8:207:27:040
21015991714,2cyclictest11033-21kworker/u8:010:57:040
21021991613,2cyclictest6333-21kworker/u8:208:58:043
2102199160,2cyclictest0-21swapper/310:55:043
21019991613,2cyclictest25424-21kworker/u8:007:56:052
21019991613,2cyclictest2213-21kworker/u8:012:25:042
21016991613,2cyclictest6333-21kworker/u8:209:03:041
21016991613,2cyclictest6333-21kworker/u8:208:48:021
21016991613,2cyclictest6333-21kworker/u8:208:04:041
21016991613,2cyclictest21052-21kworker/u8:008:31:041
21015991613,2cyclictest6333-21kworker/u8:209:00:040
21015991613,2cyclictest26898-21kworker/u8:211:17:050
21015991613,2cyclictest25424-21kworker/u8:008:14:040
21015991613,2cyclictest25424-21kworker/u8:008:05:040
21015991613,2cyclictest2213-21kworker/u8:012:33:040
21015991613,2cyclictest2213-21kworker/u8:012:28:050
21015991613,2cyclictest21052-21kworker/u8:008:40:050
21015991613,2cyclictest19097-21kworker/u8:010:12:040
21015991613,2cyclictest18121-21kworker/u8:209:30:040
2101599160,14cyclictest0-21swapper/009:26:050
21021991512,2cyclictest30940-21kworker/u8:107:39:043
21021991512,2cyclictest25424-21kworker/u8:007:34:053
2102199151,12cyclictest0-21swapper/307:25:153
2102199150,2cyclictest0-21swapper/309:54:053
21019991512,2cyclictest6333-21kworker/u8:208:47:042
21019991512,2cyclictest6333-21kworker/u8:208:17:042
21019991512,2cyclictest6333-21kworker/u8:207:53:042
21019991512,2cyclictest30940-21kworker/u8:107:33:042
2101999151,12cyclictest11010-21sendmail-mta08:05:192
2101999150,2cyclictest0-21swapper/209:00:042
21016991512,2cyclictest6333-21kworker/u8:208:57:041
21016991512,2cyclictest25424-21kworker/u8:008:12:041
21016991512,2cyclictest25424-21kworker/u8:007:58:051
21016991512,2cyclictest21052-21kworker/u8:008:29:041
2101699150,2cyclictest0-21swapper/111:17:041
2101699150,2cyclictest0-21swapper/110:41:041
21015991512,2cyclictest522-21kworker/u8:210:21:040
21015991512,2cyclictest522-21kworker/u8:210:21:040
21015991512,2cyclictest15514-21kworker/u8:108:24:050
2101599150,13cyclictest0-21swapper/009:16:070
2101599150,13cyclictest0-21swapper/008:15:100
21019991411,2cyclictest30940-21kworker/u8:107:43:042
21019991411,2cyclictest25424-21kworker/u8:007:49:042
21019991411,2cyclictest21052-21kworker/u8:008:30:022
21019991411,2cyclictest21052-21kworker/u8:008:28:042
21019991411,2cyclictest0-21swapper/210:15:302
2101999140,2cyclictest0-21swapper/209:35:042
2101999140,12cyclictest2951-21apt-get09:05:062
21016991411,2cyclictest25424-21kworker/u8:007:50:041
21015991411,2cyclictest6814-21kworker/u8:111:25:040
21015991411,2cyclictest27527-21kworker/u8:108:55:040
21015991411,2cyclictest25424-21kworker/u8:007:34:020
2101599140,2cyclictest0-21swapper/012:13:170
2101599140,2cyclictest0-21swapper/010:29:040
2101599140,2cyclictest0-21swapper/010:29:040
2101599140,2cyclictest0-21swapper/007:46:120
2101599140,12cyclictest0-21swapper/011:21:310
2101599140,12cyclictest0-21swapper/009:10:020
303482130,2sleep00-21swapper/011:11:490
2102199130,2cyclictest0-21swapper/308:04:043
21019991310,2cyclictest6333-21kworker/u8:208:59:052
21019991310,2cyclictest30940-21kworker/u8:107:38:042
2101999130,12cyclictest0-21swapper/207:15:162
21016991310,2cyclictest6333-21kworker/u8:208:50:041
2101699130,2cyclictest0-21swapper/111:05:041
2101699130,12cyclictest0-21swapper/110:46:251
2101699130,12cyclictest0-21swapper/107:40:131
2101699130,11cyclictest0-21swapper/108:22:021
21015991310,2cyclictest6333-21kworker/u8:208:46:050
21015991310,2cyclictest6333-21kworker/u8:207:54:010
21015991310,2cyclictest30940-21kworker/u8:107:44:040
21015991310,2cyclictest27527-21kworker/u8:108:52:010
21015991310,2cyclictest25424-21kworker/u8:008:00:040
21015991310,2cyclictest0-21swapper/012:20:130
21015991310,2cyclictest0-21swapper/012:00:190
21015991310,2cyclictest0-21swapper/009:55:370
21015991310,2cyclictest0-21swapper/007:55:170
2101599130,2cyclictest0-21swapper/011:32:530
2101599130,2cyclictest0-21swapper/008:30:150
2101599130,2cyclictest0-21swapper/007:10:040
2102199129,2cyclictest0-21swapper/311:41:373
2102199120,11cyclictest0-21swapper/310:45:443
2102199120,11cyclictest0-21swapper/307:40:193
2101999120,2cyclictest0-21swapper/212:18:252
2101999120,2cyclictest0-21swapper/210:05:182
2101999120,2cyclictest0-21swapper/208:11:042
2101999120,11cyclictest0-21swapper/209:16:012
2101999120,11cyclictest0-21swapper/208:53:042
2101599129,2cyclictest21052-21kworker/u8:008:39:040
2101999110,2cyclictest0-21swapper/208:00:042
2101699110,10cyclictest21059-21copy07:10:021
2101599116,3cyclictest26598-21munin-node0
2101599110,9cyclictest31385-21apt-get07:35:120
2101599110,10cyclictest0-21swapper/007:18:320
2101999100,2cyclictest0-21swapper/208:20:042
2101599107,2cyclictest0-21swapper/009:05:130
2101599105,4cyclictest22150irq/25-ahci[00008:25:110
210199994,3cyclictest0-21swapper/207:23:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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