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2025-12-19 - 07:45

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

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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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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot3s.osadl.org (updated Fri Dec 19, 2025 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
323862238164,24sleep30-21swapper/319:06:173
323352202165,25sleep20-21swapper/219:05:362
325202200163,24sleep10-21swapper/119:08:001
325092200163,25sleep00-21swapper/019:07:510
606321310,4sleep335299cyclictest21:45:253
606321310,4sleep335299cyclictest21:45:253
347998784,2cyclictest0-21swapper/220:59:442
119312660,3sleep011891-21gltestperf22:00:150
294962560,3sleep00-21swapper/021:25:230
151532530,3sleep20-21swapper/219:40:152
108562460,1sleep20-21swapper/223:10:242
143222440,8sleep123-21ksoftirqd/123:20:141
352993415,8cyclictest0-21swapper/321:43:043
35299331,21cyclictest0-21swapper/323:37:503
35299331,13cyclictest0-21swapper/319:45:343
33699329,11cyclictest27095-21perf23:50:000
33699327,12cyclictest18297-21munin-run23:30:010
352993119,3cyclictest0-21swapper/319:14:203
352993115,11cyclictest0-21swapper/322:04:123
352993114,3cyclictest0-21swapper/320:44:003
34299313,17cyclictest27344-40dnf20:08:571
115082310,3sleep111511-21timerwakeupswit19:30:231
352993018,3cyclictest0-21swapper/323:42:083
352993013,11cyclictest0-21swapper/300:12:563
352993013,11cyclictest0-21swapper/300:12:563
35299301,20cyclictest0-21swapper/321:30:403
35299301,10cyclictest0-21swapper/319:29:103
33699301,14cyclictest19881-21munin-run22:20:010
352992913,4cyclictest0-21swapper/323:18:343
34299290,19cyclictest0-21swapper/121:09:251
35299288,3cyclictest0-21swapper/321:11:563
352992817,3cyclictest0-21swapper/322:35:103
352992816,3cyclictest0-21swapper/320:59:223
352992815,9cyclictest0-21swapper/323:57:423
352992815,3cyclictest0-21swapper/321:35:203
352992812,11cyclictest0-21swapper/319:35:523
35299281,12cyclictest0-21swapper/300:35:003
35299280,20cyclictest0-21swapper/322:32:083
33699281,13cyclictest29292-21perf23:55:010
35299279,3cyclictest0-21swapper/322:45:003
35299278,9cyclictest0-21swapper/300:38:263
35299275,12cyclictest0-21swapper/322:48:283
352992717,4cyclictest0-21swapper/320:22:543
352992714,3cyclictest0-21swapper/321:55:103
352992712,10cyclictest0-21swapper/319:55:503
352992711,7cyclictest0-21swapper/321:20:403
35299271,13cyclictest0-21swapper/322:13:343
35299270,12cyclictest0-21swapper/322:29:083
35299270,10cyclictest0-21swapper/319:30:223
35299269,3cyclictest0-21swapper/320:19:343
35299268,3cyclictest0-21swapper/323:06:003
35299268,3cyclictest0-21swapper/323:02:503
35299268,3cyclictest0-21swapper/322:50:083
35299268,2cyclictest0-21swapper/322:20:183
352992616,3cyclictest0-21swapper/320:36:203
352992614,3cyclictest0-21swapper/323:12:083
352992614,3cyclictest0-21swapper/300:28:403
352992613,8cyclictest0-21swapper/319:43:223
35299261,20cyclictest0-21swapper/300:01:023
35299261,16cyclictest0-21swapper/323:27:543
352992611,3cyclictest0-21swapper/322:19:403
35299261,12cyclictest21468-21diskmemload22:06:283
35299260,12cyclictest0-21swapper/300:22:243
34799261,6cyclictest0-21swapper/221:27:122
34299263,3cyclictest17470-21sshd22:12:261
33699263,12cyclictest10157-21awk00:25:010
35299259,3cyclictest24629-21if_enp1s021:15:163
35299259,3cyclictest0-21swapper/319:54:283
35299258,7cyclictest0-21swapper/321:27:043
35299258,3cyclictest0-21swapper/319:23:223
35299258,3cyclictest0-21swapper/319:23:223
352992521,3cyclictest0-21swapper/320:28:563
352992511,3cyclictest0-21swapper/320:02:543
35299251,11cyclictest0-21swapper/300:07:563
352992510,9cyclictest0-21swapper/320:05:563
34299256,8cyclictest0-21swapper/121:33:201
33699256,16cyclictest21472-21munin-run21:10:010
33699251,12cyclictest20857-21awk19:55:010
35299249,3cyclictest0-21swapper/320:10:023
35299248,7cyclictest0-21swapper/323:22:363
35299241,8cyclictest26027-21memory23:45:183
352992410,3cyclictest0-21swapper/320:34:143
34799241,7cyclictest0-21swapper/200:05:382
34799241,6cyclictest0-21swapper/221:47:582
34799241,6cyclictest0-21swapper/221:47:582
34299246,8cyclictest0-21swapper/123:16:491
34299242,19cyclictest11086-21munin-run22:00:011
34299242,15cyclictest87250irq/129-enp1s0-00:10:581
34299242,15cyclictest87250irq/129-enp1s0-00:10:581
342992418,3cyclictest7469-21perl21:50:151
33699248,14cyclictest14547-21awk00:35:010
33699247,15cyclictest4507-21awk21:45:010
33699247,14cyclictest19283-21idleruntime-cro21:05:010
33699241,11cyclictest24277-21munin-run22:30:000
35299239,3cyclictest0-21swapper/320:52:563
352992315,3cyclictest0-21swapper/300:19:023
35299231,12cyclictest0-21swapper/321:51:363
352992310,3cyclictest0-21swapper/322:57:083
352992310,3cyclictest0-21swapper/322:57:083
35299230,12cyclictest0-21swapper/323:51:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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