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2025-12-19 - 11:32

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
Click here to display the system's profile data or here to proceed to next system.
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 the 100 highest latencies:
System rack1slot6s.osadl.org (updated Fri Dec 19, 2025 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3033321110,4sleep230332-21head20:39:472
1615899974,68cyclictest0-21swapper/300:09:313
1615899944,24cyclictest0-21swapper/322:04:373
16158999420,53cyclictest0-21swapper/323:16:403
1615899933,24cyclictest14658-21tail23:29:413
16158999216,13cyclictest0-21swapper/321:24:573
1615899915,62cyclictest0-21swapper/322:44:523
248599900,6rtkit-daemon0-21swapper/019:32:280
1615899904,66cyclictest0-21swapper/323:19:483
1615899904,66cyclictest0-21swapper/323:19:483
1615899904,29cyclictest0-21swapper/323:04:453
1615899896,64cyclictest0-21swapper/321:05:053
1615899884,27cyclictest0-21swapper/320:25:073
248599870,7rtkit-daemon0-21swapper/019:19:430
1615899874,63cyclictest0-21swapper/321:34:563
1615899874,26cyclictest0-21swapper/320:36:203
1615899874,24cyclictest0-21swapper/319:49:423
1615899874,24cyclictest0-21swapper/319:49:423
1615599874,76cyclictest0-21swapper/020:04:410
1615599874,76cyclictest0-21swapper/019:14:560
1615599874,64cyclictest0-21swapper/023:26:480
1615899864,24cyclictest0-21swapper/322:13:333
1615899864,24cyclictest0-21swapper/319:44:443
1615899864,24cyclictest0-21swapper/319:36:103
16158998627,52cyclictest26621-21fschecks_time19:24:473
16158998619,12cyclictest0-21swapper/321:41:313
16158998614,12cyclictest0-21swapper/320:19:393
1615899855,20cyclictest0-21swapper/322:29:363
1615899853,26cyclictest31224-21unixbench_singl20:40:013
1615899853,25cyclictest0-21swapper/320:59:593
16158998516,8cyclictest30233-21cut22:54:423
1615599854,74cyclictest0-21swapper/020:44:500
1615599854,73cyclictest16917-21fschecks_time23:34:390
1615599853,74cyclictest0-21swapper/022:14:560
1615899844,73cyclictest0-21swapper/322:19:243
1615899844,60cyclictest0-21swapper/322:49:483
16158998422,54cyclictest1419-21runrttasks23:54:523
16158998419,47cyclictest0-21swapper/319:20:043
16158998417,10cyclictest29114-21gltestperf19:29:503
1615599844,73cyclictest0-21swapper/022:24:360
16158998331,45cyclictest17761-21timerandwakeup23:34:553
1615899833,72cyclictest12528-21grep23:24:463
1615599834,71cyclictest0-21swapper/021:24:480
1615599833,73cyclictest0-21swapper/023:39:380
248599820,5rtkit-daemon2484-21rtkit-daemon21:34:382
1615899826,67cyclictest0-21swapper/319:44:293
1615899824,27cyclictest0-21swapper/321:24:273
1615899824,27cyclictest0-21swapper/300:29:303
1615899824,26cyclictest0-21swapper/300:14:453
1615899824,21cyclictest0-21swapper/319:54:573
16158998231,44cyclictest4324-21needreboot21:59:503
16158998217,13cyclictest0-21swapper/322:39:363
16158998214,12cyclictest0-21swapper/320:54:383
248599810,5rtkit-daemon2484-21rtkit-daemon22:11:062
248599810,4rtkit-daemon2484-21rtkit-daemon21:01:242
1615899814,70cyclictest0-21swapper/322:39:233
1615899814,70cyclictest0-21swapper/322:39:233
1615899814,23cyclictest18098-21df_inode20:14:473
16158998128,45cyclictest21407-21cpuspeed_turbos21:29:413
16158998110,15cyclictest0-21swapper/322:19:383
1615599814,70cyclictest26558-21fschecks_time21:39:440
1615599814,70cyclictest0-21swapper/020:15:030
1615599814,70cyclictest0-21swapper/000:00:360
1615599814,70cyclictest0-21swapper/000:00:360
1615599813,71cyclictest17298-21idleruntime-cro20:14:280
1615599813,71cyclictest0-21swapper/023:54:350
1615899804,59cyclictest0-21swapper/320:44:533
1615899804,58cyclictest0-21swapper/321:44:383
16158998031,41cyclictest12367-21tail21:09:463
16158998029,44cyclictest16530-21aten_r1power_vo19:04:443
16158998029,43cyclictest13957-21aten_r1power_en21:14:393
16158998017,12cyclictest0-21swapper/319:59:533
1615599804,68cyclictest0-21swapper/021:34:570
1615599804,68cyclictest0-21swapper/019:34:400
1615599803,71cyclictest4517-21cpuspeed23:09:350
1615599803,71cyclictest0-21swapper/023:19:420
1615599803,71cyclictest0-21swapper/023:19:420
1615599803,70cyclictest31948-21telnet22:59:350
1615599803,70cyclictest23749-21python20:25:010
1615599803,69cyclictest29068-21chrt20:37:310
248599790,5rtkit-daemon2484-21rtkit-daemon21:32:532
1615899795,66cyclictest0-21swapper/323:09:423
1615899794,59cyclictest0-21swapper/300:29:183
1615899794,26cyclictest0-21swapper/319:11:063
1615899794,26cyclictest0-21swapper/319:11:063
1615899794,21cyclictest0-21swapper/323:49:543
16158997925,47cyclictest22665-21unixbench-2d23:44:543
16158997923,49cyclictest15407-21cpuspeed_turbos22:24:393
1615599794,67cyclictest0-21swapper/023:49:550
1615599794,67cyclictest0-21swapper/022:34:440
1615599794,67cyclictest0-21swapper/022:34:440
1615599794,67cyclictest0-21swapper/021:19:420
1615599794,43cyclictest30312-21wc22:54:430
1615599793,70cyclictest14253-21df_abs23:29:370
1615599793,61cyclictest5440-21munin-node00:19:310
1615899786,18cyclictest0-21swapper/321:54:253
1615899786,18cyclictest0-21swapper/321:54:253
1615899784,21cyclictest0-21swapper/319:14:413
1615899783,22cyclictest31845-21aten_r1power_en22:59:343
1615899783,22cyclictest0-21swapper/320:49:393
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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