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2025-12-13 - 22:18

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 Sat Dec 13, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121282930,34sleep1201ktimersoftd/111:59:401
248599900,7rtkit-daemon0-21swapper/010:46:590
243599894,34cyclictest0-21swapper/308:59:463
243599893,26cyclictest0-21swapper/311:39:593
243599893,26cyclictest0-21swapper/311:39:593
2435998729,51cyclictest0-21swapper/307:49:403
243599854,31cyclictest31398-21runrttasks08:09:493
2435998517,12cyclictest0-21swapper/312:13:263
243599844,34cyclictest0-21swapper/307:44:403
243599844,26cyclictest0-21swapper/311:59:513
243599843,27cyclictest0-21swapper/307:19:583
243599843,27cyclictest0-21swapper/307:19:583
243599833,33cyclictest0-21swapper/310:44:343
2435998320,15cyclictest0-21swapper/307:54:483
243599824,32cyclictest0-21swapper/311:09:423
243599823,34cyclictest0-21swapper/310:14:563
243599823,34cyclictest0-21swapper/310:14:563
2435998224,9cyclictest9453-21gltestperf08:29:573
2435998220,7cyclictest14303-21awk09:49:363
2435998218,11cyclictest0-21swapper/312:33:293
2435998211,27cyclictest20371-21latency10:00:033
248599810,7rtkit-daemon0-21swapper/010:32:000
243599814,26cyclictest0-21swapper/311:24:543
243599813,31cyclictest7696-21cpuspeed_turbos09:34:493
243599804,32cyclictest0-21swapper/312:04:403
243599804,21cyclictest0-21swapper/310:09:443
243599803,32cyclictest16965-21head08:45:013
243599803,32cyclictest16965-21head08:45:013
2435998025,10cyclictest30747-21fschecks_time11:29:483
2435998014,26cyclictest14121-21seq07:31:253
248599790,7rtkit-daemon0-21swapper/011:16:130
248599790,5rtkit-daemon0-21swapper/010:43:440
243599794,15cyclictest0-21swapper/307:35:083
243599794,11cyclictest0-21swapper/309:40:113
243599783,33cyclictest0-21swapper/309:05:023
243599783,13cyclictest0-21swapper/308:19:403
2435997827,10cyclictest14153-21gltestperf10:54:493
2435997826,10cyclictest3114-21unixbench_singl10:30:063
243599774,12cyclictest0-21swapper/308:39:383
2435997730,10cyclictest27880-21proc_pri08:00:053
2435997622,8cyclictest22682-21latency_hist08:59:383
248599750,4rtkit-daemon2484-21rtkit-daemon09:43:241
248599750,17rtkit-daemon0-21swapper/009:55:160
243599754,34cyclictest0-21swapper/311:49:143
243599754,33cyclictest0-21swapper/310:49:473
248599740,9rtkit-daemon0-21swapper/010:49:440
248599740,9rtkit-daemon0-21swapper/009:59:460
248599740,17rtkit-daemon0-21swapper/010:56:440
248599730,6rtkit-daemon0-21swapper/010:15:000
248599730,6rtkit-daemon0-21swapper/010:15:000
243599734,16cyclictest0-21swapper/309:24:383
243599724,15cyclictest0-21swapper/308:19:593
2435997227,9cyclictest22456-21grep10:04:523
263622710,3sleep041ktimersoftd/009:04:580
156622710,4chrt15665-21latency_hist08:44:390
248599700,7rtkit-daemon13644-21tr10:54:441
243599694,33cyclictest0-21swapper/312:19:393
248599670,8rtkit-daemon0-21swapper/010:12:150
248599670,7rtkit-daemon0-21swapper/011:13:130
248599660,8rtkit-daemon0-21swapper/010:05:010
248599660,8rtkit-daemon0-21swapper/009:45:390
248599660,7rtkit-daemon0-21swapper/010:59:590
248599660,7rtkit-daemon0-21swapper/010:59:590
248599660,7rtkit-daemon0-21swapper/010:35:300
248599660,7rtkit-daemon0-21swapper/009:50:240
248599660,6rtkit-daemon0-21swapper/011:05:130
248599660,6rtkit-daemon0-21swapper/010:26:450
248599660,6rtkit-daemon0-21swapper/010:20:300
178902664,55sleep00-21swapper/008:49:280
178902664,55sleep00-21swapper/008:49:280
248599650,7rtkit-daemon0-21swapper/009:43:390
248599650,3rtkit-daemon0-21swapper/207:45:362
248599640,7rtkit-daemon0-21swapper/211:25:132
248599640,4rtkit-daemon2484-21rtkit-daemon07:18:302
248599630,7rtkit-daemon0-21swapper/211:16:432
248599620,6rtkit-daemon0-21swapper/207:09:452
248599620,11rtkit-daemon0-21swapper/211:59:412
248599610,9rtkit-daemon0-21swapper/212:18:552
248599610,9rtkit-daemon0-21swapper/211:19:582
248599610,9rtkit-daemon0-21swapper/209:23:022
248599610,9rtkit-daemon0-21swapper/209:13:332
248599610,9rtkit-daemon0-21swapper/208:01:512
248599610,8rtkit-daemon0-21swapper/212:27:402
248599610,8rtkit-daemon0-21swapper/208:41:192
248599610,8rtkit-daemon0-21swapper/208:35:192
248599610,8rtkit-daemon0-21swapper/208:29:422
248599610,8rtkit-daemon0-21swapper/207:56:132
248599610,8rtkit-daemon0-21swapper/207:33:372
248599610,8rtkit-daemon0-21swapper/207:24:522
248599610,7rtkit-daemon0-21swapper/212:19:552
248599610,7rtkit-daemon0-21swapper/211:54:492
248599610,7rtkit-daemon0-21swapper/211:39:272
248599610,7rtkit-daemon0-21swapper/211:30:052
248599610,7rtkit-daemon0-21swapper/209:30:322
248599610,7rtkit-daemon0-21swapper/209:30:322
248599610,7rtkit-daemon0-21swapper/209:28:172
248599610,7rtkit-daemon0-21swapper/209:00:112
248599610,7rtkit-daemon0-21swapper/208:16:202
248599610,7rtkit-daemon0-21swapper/207:37:592
248599610,4rtkit-daemon0-21swapper/208:08:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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