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2025-12-24 - 15:42

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 Wed Dec 24, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2485991090,12rtkit-daemon0-21swapper/308:20:303
30310991024,50cyclictest0-21swapper/007:44:420
3031099974,51cyclictest0-21swapper/009:49:290
3031099974,50cyclictest0-21swapper/011:44:410
3031099964,49cyclictest0-21swapper/009:29:160
3031099954,48cyclictest0-21swapper/010:34:360
30317999442,45cyclictest0-21swapper/207:54:202
30317999338,12cyclictest0-21swapper/209:38:342
30318999120,64cyclictest21071-21cpuspeed11:09:253
3031799905,28cyclictest0-21swapper/207:54:372
3031799904,42cyclictest0-21swapper/212:19:282
3031799897,40cyclictest0-21swapper/207:04:432
248599890,5rtkit-daemon12-21rcu_preempt07:39:393
3031799886,30cyclictest0-21swapper/208:44:422
3031799874,26cyclictest0-21swapper/211:57:302
114992850,7sleep13031599cyclictest08:34:311
3031899839,11cyclictest0-21swapper/307:49:313
3031799835,38cyclictest0-21swapper/208:39:312
30317998320,13cyclictest0-21swapper/208:49:312
30318998218,8cyclictest7499-21idleruntime08:24:383
3031799826,30cyclictest0-21swapper/206:59:312
30317998239,9cyclictest15047-21telnet09:49:302
248599820,7rtkit-daemon20211-21unixbench_multi08:49:513
30318998122,44cyclictest20620-21sshd12:14:323
3031799814,39cyclictest0-21swapper/209:39:332
3031899793,69cyclictest16548-21sed12:04:423
3031899793,68cyclictest0-21swapper/311:54:433
30317997932,10cyclictest8272-21grep10:39:472
248599790,6rtkit-daemon0-21swapper/310:10:253
248599790,4rtkit-daemon2484-21rtkit-daemon11:07:161
3031899783,68cyclictest0-21swapper/308:39:323
3031899783,67cyclictest25105-21grep12:24:283
3031899783,67cyclictest0-21swapper/307:09:353
30318997821,42cyclictest1287-21snmpd10:14:343
50442770,5sleep226-21rcuc/208:20:172
3031899774,66cyclictest9508-21runrttasks11:50:123
3031899773,67cyclictest0-21swapper/307:19:413
248599770,4rtkit-daemon2484-21rtkit-daemon11:10:161
3031899767,11cyclictest0-21swapper/307:34:393
3031899767,11cyclictest0-21swapper/307:04:333
3031899764,64cyclictest0-21swapper/311:04:243
3031899763,66cyclictest29225-21munin-node10:19:293
3031899763,66cyclictest11269-21munin-node10:49:383
3031899763,66cyclictest0-21swapper/311:24:443
30318997626,43cyclictest20892-21needreboot09:59:403
30318997617,53cyclictest26310-21fschecks_time11:19:323
248599760,4rtkit-daemon2484-21rtkit-daemon11:48:141
248599760,4rtkit-daemon2484-21rtkit-daemon11:18:151
248599760,4rtkit-daemon2484-21rtkit-daemon11:18:151
3031899759,8cyclictest12191-21gltestperf08:34:373
3031899754,63cyclictest488-21proc_pri10:24:433
3031899753,65cyclictest20853-21munin-node07:44:443
3031899744,63cyclictest0-21swapper/311:29:433
3031899744,12cyclictest0-21swapper/310:39:413
3031899743,63cyclictest6428-21iostat07:14:433
30318997420,47cyclictest26909-21munin-node07:59:493
30318997418,49cyclictest1031-21cut11:34:293
30318997415,8cyclictest11871-21unixbench_multi07:24:533
30318997413,53cyclictest0-21swapper/310:54:253
3031899734,62cyclictest0-21swapper/310:44:253
3031899734,13cyclictest0-21swapper/309:34:373
3031899733,63cyclictest0-21swapper/309:50:083
30318997323,44cyclictest22073-21aten_r1power_fr12:19:223
30318997321,46cyclictest25448-21hwlatdetect07:54:403
30318997320,47cyclictest24499-21needreboot08:59:413
30318997320,47cyclictest24499-21needreboot08:59:413
30318997320,46cyclictest19445-21crond09:59:143
30318997319,47cyclictest14014-21python07:29:503
3031899723,22cyclictest0-21swapper/310:35:203
30318997226,40cyclictest13120-21fschecks_count09:44:333
30318997226,40cyclictest13120-21fschecks_count09:44:333
30318997223,42cyclictest22911-21gltestperf10:04:343
30318997217,47cyclictest0-21swapper/310:29:253
30318997217,47cyclictest0-21swapper/310:29:253
3031899714,60cyclictest0-21swapper/312:09:403
3031899714,12cyclictest0-21swapper/308:44:393
3031899714,11cyclictest0-21swapper/311:59:253
3031899713,22cyclictest0-21swapper/311:42:143
30318997129,36cyclictest26503-21head09:04:363
30318997125,40cyclictest23945-21fschecks_time11:14:303
30318997125,40cyclictest23945-21fschecks_time11:14:303
30318997123,42cyclictest4401-21sensors_temp09:24:493
30318997122,42cyclictest6053-21fschecks_time09:29:333
30318997122,42cyclictest16503-21df_abs10:59:273
30318997121,43cyclictest6705-21python11:44:423
30318997121,43cyclictest28506-21df_abs09:09:323
30315997136,21cyclictest13787-21sh08:39:291
3031899704,14cyclictest0-21swapper/308:29:363
3031899704,13cyclictest0-21swapper/308:14:303
3031899704,13cyclictest0-21swapper/308:14:303
30318997022,42cyclictest29984-21fschecks_time08:04:373
30318997014,9cyclictest30767-21cpuspeed_turbos09:14:303
30318997013,42cyclictest0-21swapper/308:59:143
30317997040,25cyclictest0-21swapper/208:14:512
30317997040,25cyclictest0-21swapper/208:14:512
3031899694,14cyclictest0-21swapper/306:59:233
3031899694,13cyclictest0-21swapper/309:19:363
3031899694,12cyclictest0-21swapper/309:39:303
30318996922,41cyclictest31996-21switchtime06:59:503
30318996915,48cyclictest0-21swapper/308:14:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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