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2025-12-29 - 21:29

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 Mon Dec 29, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14015991024,90cyclictest0-21swapper/011:34:580
14015991004,89cyclictest0-21swapper/007:25:060
248599960,6rtkit-daemon0-21swapper/310:59:313
1401599944,83cyclictest0-21swapper/011:29:510
1402199924,28cyclictest0-21swapper/211:40:022
1402199924,25cyclictest0-21swapper/207:34:592
1402199914,28cyclictest0-21swapper/210:24:442
1402199914,28cyclictest0-21swapper/210:24:442
14021999133,10cyclictest8701-21grep08:55:082
1401599913,43cyclictest10323-21idleruntime08:59:560
1401599913,43cyclictest10323-21idleruntime08:59:560
1401599904,49cyclictest0-21swapper/011:52:120
1401599904,49cyclictest0-21swapper/011:52:120
1402199894,27cyclictest0-21swapper/209:44:482
1402199894,27cyclictest0-21swapper/209:44:482
1402199893,26cyclictest0-21swapper/212:14:472
14015998935,10cyclictest446-21gltestperf08:39:560
1402199884,27cyclictest0-21swapper/207:29:552
1402199874,27cyclictest0-21swapper/208:49:512
1402199844,45cyclictest0-21swapper/208:34:592
14021998434,9cyclictest1671-21grep09:49:522
14021998326,13cyclictest0-21swapper/207:04:542
1402199824,27cyclictest0-21swapper/207:00:152
1402199814,28cyclictest0-21swapper/209:09:502
1402199814,27cyclictest0-21swapper/210:39:472
1402199803,27cyclictest0-21swapper/209:54:502
1402199794,27cyclictest0-21swapper/207:15:042
1402199793,27cyclictest0-21swapper/208:39:572
1402199784,27cyclictest0-21swapper/208:19:582
1402199774,27cyclictest0-21swapper/210:09:572
133592730,6sleep013362-21grep11:20:030
14022997229,24cyclictest13466-21unixbench_multi09:05:083
127952698,13sleep10-21swapper/106:50:001
127952698,13sleep10-21swapper/106:50:001
248599640,11rtkit-daemon0-21swapper/310:04:483
248599640,11rtkit-daemon0-21swapper/307:26:093
248599630,9rtkit-daemon0-21swapper/309:02:203
248599630,9rtkit-daemon0-21swapper/309:02:203
248599630,9rtkit-daemon0-21swapper/308:41:063
248599630,9rtkit-daemon0-21swapper/307:52:153
248599630,8rtkit-daemon0-21swapper/307:47:013
248599630,11rtkit-daemon0-21swapper/311:56:213
248599630,11rtkit-daemon0-21swapper/311:32:223
248599630,11rtkit-daemon0-21swapper/310:01:033
248599630,10rtkit-daemon0-21swapper/309:22:573
158312630,8sleep315833-21unixbench_singl11:25:063
248599620,9rtkit-daemon0-21swapper/311:01:453
248599620,9rtkit-daemon0-21swapper/309:48:183
248599620,9rtkit-daemon0-21swapper/309:48:183
248599620,9rtkit-daemon0-21swapper/308:07:373
248599620,8rtkit-daemon0-21swapper/310:50:313
248599620,8rtkit-daemon0-21swapper/310:48:233
248599620,8rtkit-daemon0-21swapper/309:57:183
248599620,8rtkit-daemon0-21swapper/308:45:063
248599620,8rtkit-daemon0-21swapper/307:12:323
248599620,7rtkit-daemon0-21swapper/308:10:523
248599620,11rtkit-daemon0-21swapper/311:35:293
248599620,11rtkit-daemon0-21swapper/310:12:473
248599620,11rtkit-daemon0-21swapper/309:27:493
248599620,11rtkit-daemon0-21swapper/308:25:293
248599620,10rtkit-daemon0-21swapper/311:05:083
248599620,10rtkit-daemon0-21swapper/310:26:093
248599620,10rtkit-daemon0-21swapper/310:26:093
248599620,10rtkit-daemon0-21swapper/310:20:323
248599620,10rtkit-daemon0-21swapper/309:54:183
248599620,10rtkit-daemon0-21swapper/309:41:343
248599620,10rtkit-daemon0-21swapper/309:12:273
248599620,10rtkit-daemon0-21swapper/308:53:503
248599620,10rtkit-daemon0-21swapper/307:58:303
248599620,10rtkit-daemon0-21swapper/307:43:533
1401599624,51cyclictest0-21swapper/009:54:500
248599610,9rtkit-daemon0-21swapper/308:35:293
248599610,9rtkit-daemon0-21swapper/307:24:243
248599610,8rtkit-daemon0-21swapper/311:49:513
248599610,8rtkit-daemon0-21swapper/311:49:513
248599610,8rtkit-daemon0-21swapper/311:10:003
248599610,8rtkit-daemon0-21swapper/310:15:473
248599610,8rtkit-daemon0-21swapper/309:30:193
248599610,8rtkit-daemon0-21swapper/308:31:513
248599610,7rtkit-daemon0-21swapper/307:03:023
248599610,7rtkit-daemon0-21swapper/306:59:173
248599610,6rtkit-daemon0-21swapper/308:55:053
248599610,11rtkit-daemon0-21swapper/311:45:593
248599610,11rtkit-daemon0-21swapper/310:35:393
248599610,11rtkit-daemon0-21swapper/309:35:113
248599610,11rtkit-daemon0-21swapper/309:18:123
248599610,10rtkit-daemon0-21swapper/311:43:063
248599610,10rtkit-daemon0-21swapper/310:30:543
248599610,10rtkit-daemon0-21swapper/308:21:523
248599610,10rtkit-daemon0-21swapper/308:02:073
1402299613,50cyclictest0-21swapper/311:19:483
14018996143,13cyclictest0-21swapper/112:04:571
14018996142,13cyclictest0-21swapper/107:30:081
14018996142,12cyclictest0-21swapper/108:09:591
1401899613,52cyclictest0-21swapper/111:23:071
1401599614,49cyclictest0-21swapper/008:54:520
264772603,49sleep226621-21unixbench-2d08:25:122
248599600,9rtkit-daemon0-21swapper/307:37:233
248599600,8rtkit-daemon0-21swapper/310:41:093
248599600,11rtkit-daemon0-21swapper/307:32:393
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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