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2026-06-11 - 16:59

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 Thu Jun 11, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18741991054,94cyclictest0-21swapper/010:32:240
18741991034,27cyclictest0-21swapper/011:12:420
1874199993,88cyclictest0-21swapper/009:32:470
18746999629,9cyclictest8194-21unixbench_multi11:12:412
18741999533,9cyclictest16528-21tail07:57:400
1874199943,43cyclictest22425-21ssh12:22:280
1874699933,24cyclictest30351-21ssh09:22:402
1874199934,82cyclictest0-21swapper/008:58:240
1874199933,50cyclictest0-21swapper/009:27:290
1874199925,46cyclictest0-21swapper/011:34:110
18746999115,8cyclictest1227-21runrttasks09:47:242
18746999115,8cyclictest1227-21runrttasks09:47:242
1874199914,44cyclictest18624-21uniq12:17:240
18741999130,12cyclictest0-21swapper/010:27:310
18741999130,12cyclictest0-21swapper/010:27:310
1874699903,34cyclictest0-21swapper/207:37:302
18746999027,13cyclictest0-21swapper/211:07:312
18746999027,13cyclictest0-21swapper/211:07:312
18746999016,13cyclictest0-21swapper/210:36:112
18741999022,14cyclictest0-21swapper/011:29:270
1874699893,37cyclictest0-21swapper/209:27:262
18746998924,20cyclictest4870-21cpuspeed_turbos11:57:212
1874199893,46cyclictest0-21swapper/010:17:070
1874199893,43cyclictest0-21swapper/011:53:460
1874199893,42cyclictest0-21swapper/010:52:480
1874699884,36cyclictest1227-21runrttasks09:02:292
1874699884,12cyclictest0-21swapper/210:46:302
1874699883,38cyclictest0-21swapper/211:32:302
1874199883,42cyclictest0-21swapper/012:14:190
18741998820,10cyclictest22327-21cpuspeed_turbos09:12:270
1874699874,39cyclictest0-21swapper/211:02:392
1874699873,38cyclictest0-21swapper/210:02:292
1874699873,35cyclictest0-21swapper/208:47:472
1874699873,16cyclictest0-21swapper/209:52:242
18746998710,20cyclictest0-21swapper/210:58:362
1874199873,42cyclictest0-21swapper/012:05:270
18746998636,44cyclictest0-21swapper/212:08:272
1874699863,36cyclictest0-21swapper/210:18:542
1874699863,35cyclictest0-21swapper/212:16:362
18746998621,9cyclictest11530-21ssh09:42:372
18746998621,9cyclictest11530-21ssh09:42:372
18746998619,12cyclictest0-21swapper/211:17:322
18746998614,20cyclictest0-21swapper/210:11:312
1874699853,34cyclictest0-21swapper/210:12:252
1874699853,25cyclictest0-21swapper/211:42:262
18746998517,13cyclictest0-21swapper/209:16:232
1874199853,44cyclictest0-21swapper/010:42:360
1874699843,38cyclictest0-21swapper/208:57:312
1874199843,43cyclictest0-21swapper/010:59:170
1874699833,25cyclictest0-21swapper/209:20:252
1874699824,12cyclictest0-21swapper/211:41:372
18746998222,12cyclictest0-21swapper/210:27:302
18746998222,12cyclictest0-21swapper/210:27:302
18746998218,13cyclictest0-21swapper/209:32:402
1874199827,14cyclictest0-21swapper/011:41:570
1874199823,43cyclictest0-21swapper/011:22:020
1874699813,39cyclictest0-21swapper/208:02:392
1874699813,38cyclictest0-21swapper/210:54:542
1874699813,25cyclictest0-21swapper/212:22:272
18746998112,9cyclictest889-21rs:main2
1874199814,43cyclictest0-21swapper/010:09:110
1874699805,22cyclictest0-21swapper/212:18:192
1874699803,34cyclictest0-21swapper/207:48:162
1874699803,34cyclictest0-21swapper/207:48:162
1874699803,12cyclictest0-21swapper/212:02:242
18746998013,8cyclictest107550irq/46-eth009:57:332
1874699794,25cyclictest0-21swapper/211:27:422
1874699793,35cyclictest0-21swapper/208:27:282
1874699793,35cyclictest0-21swapper/208:27:282
1874699784,36cyclictest0-21swapper/211:57:072
18746997824,8cyclictest14456-21netstat11:22:352
18746997719,7cyclictest17478-21latency_hist08:02:172
1874699734,15cyclictest0-21swapper/209:37:312
1874799714,60cyclictest0-21swapper/310:27:233
1874799714,60cyclictest0-21swapper/310:27:233
18746997129,12cyclictest0-21swapper/208:42:492
1874499714,29cyclictest0-21swapper/111:52:251
18746997026,7cyclictest26216-21kworker/2:007:42:292
1874699697,29cyclictest0-21swapper/210:47:232
1874699674,15cyclictest0-21swapper/210:22:432
1874199664,55cyclictest0-21swapper/009:41:000
219499640,5rtkit-daemon2193-21rtkit-daemon10:28:471
219499640,5rtkit-daemon2193-21rtkit-daemon10:28:471
1874799645,39cyclictest0-21swapper/308:17:333
1874499645,53cyclictest0-21swapper/111:44:191
1874499645,16cyclictest0-21swapper/109:02:221
1874499643,55cyclictest0-21swapper/109:07:321
1874499643,55cyclictest0-21swapper/109:07:321
1874499634,53cyclictest0-21swapper/110:36:101
1874199634,51cyclictest0-21swapper/011:42:220
1874799624,49cyclictest25960-21runrttasks10:04:013
1874499625,31cyclictest0-21swapper/110:02:331
1874499624,52cyclictest0-21swapper/111:57:341
1874499624,52cyclictest0-21swapper/109:48:201
1874499624,52cyclictest0-21swapper/109:48:201
1874499624,52cyclictest0-21swapper/109:25:361
219499610,4rtkit-daemon2193-21rtkit-daemon09:39:111
1874799615,48cyclictest0-21swapper/309:36:073
1874799615,37cyclictest0-21swapper/312:07:553
1874799614,28cyclictest0-21swapper/311:17:433
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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