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2026-07-29 - 15:45

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, 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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  Intel
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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 the 100 highest latencies:
System rack1slot6s.osadl.org (updated Wed Jul 29, 2026 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
117169910918,65cyclictest12303-21cpuspeed_turbos06:12:251
11716999517,14cyclictest0-21swapper/107:06:201
1171699934,28cyclictest0-21swapper/108:55:241
1171699934,28cyclictest0-21swapper/108:37:211
1171699934,24cyclictest1227-21runrttasks10:14:131
1171699934,24cyclictest0-21swapper/109:46:371
1171699934,24cyclictest0-21swapper/108:48:451
1171699925,26cyclictest0-21swapper/109:41:451
1171699925,23cyclictest0-21swapper/110:06:101
1171699924,25cyclictest0-21swapper/110:42:471
1171699924,13cyclictest0-21swapper/110:27:321
11716999213,69cyclictest0-21swapper/111:03:001
1171699918,25cyclictest0-21swapper/109:23:241
1171699918,25cyclictest0-21swapper/109:23:241
1171699914,28cyclictest0-21swapper/107:37:351
1171699914,27cyclictest0-21swapper/107:42:411
1171699914,26cyclictest0-21swapper/111:21:301
1171699913,29cyclictest0-21swapper/110:53:111
1171699906,23cyclictest0-21swapper/109:52:481
1171699905,25cyclictest0-21swapper/110:50:051
1171699905,23cyclictest10990-21awk08:22:061
1171699904,24cyclictest0-21swapper/110:32:221
1171699904,12cyclictest0-21swapper/108:33:451
11716999017,12cyclictest0-21swapper/111:37:421
1171699895,27cyclictest0-21swapper/110:22:241
1171699894,28cyclictest0-21swapper/110:57:341
1171699894,26cyclictest0-21swapper/110:39:511
1171699894,23cyclictest0-21swapper/110:00:181
1171699885,23cyclictest0-21swapper/111:25:051
11716998820,10cyclictest0-21swapper/111:16:301
11716998817,13cyclictest0-21swapper/109:16:301
1171699875,23cyclictest0-21swapper/106:27:241
1171699875,23cyclictest0-21swapper/106:27:241
1171699874,25cyclictest0-21swapper/109:17:551
1171699874,23cyclictest0-21swapper/110:20:461
1171699874,22cyclictest0-21swapper/108:07:201
1171699864,27cyclictest0-21swapper/108:42:181
1171699864,27cyclictest0-21swapper/108:42:181
1171699864,26cyclictest0-21swapper/109:27:531
11716998626,53cyclictest890-21rsyslogd07:12:201
11716998612,8cyclictest107550irq/46-eth008:26:131
1171699856,21cyclictest0-21swapper/108:27:581
1171699855,25cyclictest0-21swapper/108:16:341
1171699855,23cyclictest0-21swapper/111:31:191
1171699855,23cyclictest0-21swapper/111:31:191
1171699854,29cyclictest0-21swapper/109:47:331
1171699854,25cyclictest0-21swapper/110:07:131
1171699854,25cyclictest0-21swapper/110:07:131
1171699854,24cyclictest0-21swapper/109:01:111
1171699854,23cyclictest0-21swapper/111:09:251
1171699854,23cyclictest0-21swapper/109:11:241
219499840,5rtkit-daemon2193-21rtkit-daemon08:53:202
122192830,4sleep00-21swapper/006:12:250
1171699834,23cyclictest0-21swapper/109:35:121
1171699834,22cyclictest6046-21diskstats09:02:221
11716998322,10cyclictest15007-21fschecks_time06:17:301
1171699824,69cyclictest0-21swapper/108:02:371
1171699824,26cyclictest0-21swapper/111:33:191
1171699823,12cyclictest0-21swapper/106:37:461
11716998111,11cyclictest0-21swapper/106:46:501
1171699809,22cyclictest0-21swapper/107:52:321
1171699806,35cyclictest0-21swapper/108:02:081
1171699794,28cyclictest0-21swapper/107:07:431
1171699794,28cyclictest0-21swapper/107:07:431
1171699794,27cyclictest0-21swapper/106:47:431
1171699794,22cyclictest0-21swapper/106:32:241
1171699793,22cyclictest17634-21idleruntime-cro07:32:071
11716997813,11cyclictest0-21swapper/107:17:211
1171699774,18cyclictest3268-21crond07:02:091
1171699773,30cyclictest0-21swapper/106:22:471
1171699773,12cyclictest0-21swapper/107:57:421
1171699765,17cyclictest31910-21hddtemp_smartct06:52:301
1171699754,22cyclictest0-21swapper/107:22:311
1171699752,27cyclictest26106-21sort07:47:311
1171699734,21cyclictest0-21swapper/107:32:251
219499720,3rtkit-daemon0-21swapper/009:48:550
1171699715,15cyclictest0-21swapper/106:12:121
219499700,7rtkit-daemon0-21swapper/007:03:540
64862683,58sleep00-21swapper/009:02:280
219499660,5rtkit-daemon2193-21rtkit-daemon09:56:100
219499660,5rtkit-daemon2193-21rtkit-daemon08:38:350
219499660,4rtkit-daemon2193-21rtkit-daemon11:32:140
219499660,4rtkit-daemon2193-21rtkit-daemon11:02:450
219499650,6rtkit-daemon0-21swapper/308:54:573
219499650,5rtkit-daemon2193-21rtkit-daemon11:10:070
219499650,5rtkit-daemon2193-21rtkit-daemon11:01:150
219499650,5rtkit-daemon2193-21rtkit-daemon09:58:320
219499650,5rtkit-daemon2193-21rtkit-daemon07:35:080
219499650,5rtkit-daemon2193-21rtkit-daemon06:50:250
219499650,4rtkit-daemon2193-21rtkit-daemon10:22:460
219499650,4rtkit-daemon2193-21rtkit-daemon06:42:330
219499640,8rtkit-daemon0-21swapper/006:35:180
219499640,5rtkit-daemon2193-21rtkit-daemon11:27:060
219499640,5rtkit-daemon2193-21rtkit-daemon11:27:060
219499640,5rtkit-daemon2193-21rtkit-daemon11:22:590
219499640,5rtkit-daemon2193-21rtkit-daemon09:35:410
219499640,5rtkit-daemon2193-21rtkit-daemon08:45:280
219499640,5rtkit-daemon2193-21rtkit-daemon08:45:280
219499640,5rtkit-daemon2193-21rtkit-daemon06:30:330
219499640,5rtkit-daemon2193-21rtkit-daemon06:30:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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