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2026-05-22 - 09:07

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 May 22, 2026 00:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
216932239162,24sleep00-21swapper/019:07:260
216252239162,24sleep20-21swapper/219:06:342
217612234164,56sleep10-21swapper/119:08:181
202882203167,24sleep30-21swapper/319:05:153
2764821880,5sleep32199199cyclictest23:00:173
1710621770,4sleep22198799cyclictest22:35:242
238621310,3sleep339-21rcuc/319:35:183
228322650,1sleep20-21swapper/219:10:162
21987996158,2cyclictest0-21swapper/220:52:262
124642440,1sleep30-21swapper/320:00:013
21987993734,2cyclictest0-21swapper/222:31:412
21974993610,13cyclictest5667-21munin-run19:45:010
2197499342,13cyclictest8327-21kworker/0:121:05:230
2198799320,13cyclictest0-21swapper/222:05:292
2197499326,12cyclictest18879-21perf20:15:020
2197499322,24cyclictest27146-21kworker/0:100:12:480
2198799311,13cyclictest0-21swapper/200:01:372
2199199301,17cyclictest0-21swapper/323:16:093
2198799301,10cyclictest0-21swapper/222:44:262
2198799300,12cyclictest0-21swapper/221:46:452
2198099300,24cyclictest0-21swapper/122:23:081
2197499302,12cyclictest1255-21kworker/0:100:29:110
2199199291,20cyclictest0-21swapper/321:44:173
2199199291,19cyclictest0-21swapper/323:28:223
2199199291,16cyclictest11703-21kworker/u8:223:40:173
2198799291,22cyclictest0-21swapper/223:26:132
2198099292,25cyclictest0-21swapper/119:17:121
2198099291,26cyclictest0-21swapper/119:10:461
21974992919,3cyclictest9501-21kworker/0:023:45:200
21974992915,3cyclictest9974-21kworker/0:319:55:160
112252290,2sleep30-21swapper/323:35:253
112252290,2sleep30-21swapper/323:35:253
2199199281,19cyclictest0-21swapper/300:09:133
2199199281,18cyclictest0-21swapper/322:30:473
2199199280,17cyclictest0-21swapper/323:57:053
2198799281,13cyclictest0-21swapper/223:44:532
2198799281,12cyclictest0-21swapper/219:15:102
2198799281,11cyclictest0-21swapper/221:56:172
2198099289,10cyclictest8070-21cat22:15:201
2198099282,13cyclictest32055-21munin-run20:45:021
2198099281,26cyclictest0-21swapper/123:46:281
2198099281,25cyclictest0-21swapper/123:51:011
2198099281,25cyclictest0-21swapper/123:24:101
2197499281,22cyclictest26713-21kworker/0:123:03:230
2197499281,10cyclictest26713-21kworker/0:123:16:230
2199199271,18cyclictest0-21swapper/321:53:593
2199199270,18cyclictest0-21swapper/300:37:123
2199199270,17cyclictest0-21swapper/323:30:363
2198799271,12cyclictest27261-21df23:00:142
2198799270,11cyclictest0-21swapper/222:14:532
2198799270,11cyclictest0-21swapper/221:40:412
2198099272,16cyclictest0-21swapper/123:01:441
2198099271,24cyclictest0-21swapper/123:57:121
2198099271,24cyclictest0-21swapper/123:29:001
2198099271,24cyclictest0-21swapper/119:38:261
2198099271,24cyclictest0-21swapper/100:18:411
2198099270,25cyclictest0-21swapper/123:18:481
2198099270,25cyclictest0-21swapper/119:26:181
2197499272,9cyclictest17604-21kworker/0:022:39:110
307432260,2sleep30-21swapper/320:40:143
2199199264,13cyclictest0-21swapper/323:21:023
21991992612,6cyclictest0-21swapper/322:19:343
2199199261,17cyclictest0-21swapper/321:26:173
2198799261,2cyclictest0-21swapper/200:06:412
2198799260,13cyclictest0-21swapper/222:57:062
2198799260,12cyclictest0-21swapper/222:49:102
2198799260,11cyclictest0-21swapper/223:48:052
2198099262,15cyclictest0-21swapper/120:17:271
21980992614,3cyclictest0-21swapper/122:47:421
2198099261,16cyclictest0-21swapper/120:50:161
2198099260,24cyclictest0-21swapper/100:30:441
2198099260,24cyclictest0-21swapper/100:11:101
2197499262,9cyclictest9974-21kworker/0:319:55:020
2197499262,11cyclictest5036-21kworker/0:323:29:030
2197499262,11cyclictest17604-21kworker/0:022:43:190
2197499262,11cyclictest10667-21kworker/0:021:17:110
2197499262,10cyclictest14023-21kworker/0:323:52:160
2199199259,5cyclictest0-21swapper/321:20:033
2199199251,18cyclictest0-21swapper/323:48:263
2199199251,18cyclictest0-21swapper/322:36:413
2199199251,17cyclictest0-21swapper/300:15:343
2199199251,16cyclictest20738-21kworker/u8:200:20:413
2199199251,15cyclictest653-21kworker/u8:023:14:563
2199199250,17cyclictest0-21swapper/322:11:063
2198799251,9cyclictest0-21swapper/223:37:172
2198799251,9cyclictest0-21swapper/223:37:172
2198799251,11cyclictest0-21swapper/223:05:462
2198799250,11cyclictest0-21swapper/222:03:172
2198099252,15cyclictest0-21swapper/121:23:101
21980992514,3cyclictest0-21swapper/100:06:341
2198099251,22cyclictest0-21swapper/123:43:021
2198099251,16cyclictest0-21swapper/122:37:041
2198099251,16cyclictest0-21swapper/122:28:541
2198099251,16cyclictest0-21swapper/121:44:351
2198099251,16cyclictest0-21swapper/121:02:231
2198099251,15cyclictest0-21swapper/121:34:271
2198099251,15cyclictest0-21swapper/120:37:231
2198099251,15cyclictest0-21swapper/100:04:261
2198099250,15cyclictest0-21swapper/121:50:251
2197499252,9cyclictest9501-21kworker/0:023:36:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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