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2026-08-15 - 02:10

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 Sat Aug 15, 2026 00:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
226652240164,24sleep00-21swapper/019:07:060
227972237162,24sleep20-21swapper/219:08:492
226042231162,56sleep10-21swapper/119:06:181
228092206169,25sleep30-21swapper/319:08:583
2820121680,4sleep02296999cyclictest21:45:180
685021480,3sleep02296999cyclictest00:38:470
2298199103100,2cyclictest0-21swapper/200:38:152
30502620,1sleep20-21swapper/220:50:022
184362620,2sleep081ktimersoftd/022:35:260
256442560,2sleep22298199cyclictest00:05:262
143792550,1sleep10-21swapper/121:15:131
22981994845,2cyclictest0-21swapper/223:33:002
293222390,2sleep230-21rcuc/219:20:202
22988993727,3cyclictest0-21swapper/319:37:353
2298899361,28cyclictest0-21swapper/320:48:223
22981993532,2cyclictest0-21swapper/223:26:482
22969993510,11cyclictest28667-21awk20:35:010
2298899330,15cyclictest0-21swapper/323:48:273
2297699332,25cyclictest27918-21kworker/u8:023:19:141
2296999339,11cyclictest582-21idleruntime-cro20:45:010
2296999339,11cyclictest582-21idleruntime-cro20:45:010
2296999333,14cyclictest5087-21munin-run20:55:010
2298899321,29cyclictest0-21swapper/300:20:513
2298899321,28cyclictest0-21swapper/323:41:083
2298899321,21cyclictest0-21swapper/319:15:393
2298899321,15cyclictest0-21swapper/320:36:433
2298899321,14cyclictest0-21swapper/321:13:113
2297699320,25cyclictest3944-21kworker/u8:200:30:071
2296999324,13cyclictest18295-21awk21:25:010
2298899311,20cyclictest0-21swapper/319:33:353
2298899311,20cyclictest0-21swapper/319:33:353
22988993017,7cyclictest0-21swapper/320:13:153
22988993016,7cyclictest0-21swapper/320:32:073
2298899301,20cyclictest0-21swapper/320:56:273
2298899301,20cyclictest0-21swapper/319:13:313
2298899301,19cyclictest0-21swapper/320:43:513
2298899301,19cyclictest0-21swapper/320:43:503
2298899301,13cyclictest0-21swapper/323:23:233
2298899301,13cyclictest0-21swapper/319:26:353
2298899301,12cyclictest0-21swapper/321:28:353
2298899301,11cyclictest0-21swapper/323:02:193
2298899300,12cyclictest0-21swapper/321:56:033
2297699302,24cyclictest2568-21munin-run00:30:011
2297699301,22cyclictest0-21swapper/122:53:391
22988992915,3cyclictest0-21swapper/319:40:393
2298899291,27cyclictest0-21swapper/321:40:233
2298899291,19cyclictest0-21swapper/321:02:193
2298899291,13cyclictest0-21swapper/322:42:233
2298899291,13cyclictest0-21swapper/321:48:393
2298899291,12cyclictest0-21swapper/320:15:033
2298899291,10cyclictest0-21swapper/321:32:353
2298899290,15cyclictest0-21swapper/322:39:073
2298899290,13cyclictest0-21swapper/321:20:253
2298899290,12cyclictest0-21swapper/322:19:393
2297699291,22cyclictest0-21swapper/123:24:191
2298899281,18cyclictest0-21swapper/322:45:233
2298899281,14cyclictest0-21swapper/323:05:473
2298899281,13cyclictest0-21swapper/320:05:273
2298899281,12cyclictest0-21swapper/322:31:393
2298899281,12cyclictest0-21swapper/300:17:153
2298899281,11cyclictest0-21swapper/323:38:383
2298899280,13cyclictest0-21swapper/323:13:113
2298899280,11cyclictest0-21swapper/322:27:073
2298899280,11cyclictest0-21swapper/322:22:393
2298199285,3cyclictest0-21swapper/220:17:442
2297699282,4cyclictest26143-21munin-run00:10:011
2297699281,22cyclictest0-21swapper/122:44:461
2298899271,9cyclictest0-21swapper/323:28:593
2298899271,7cyclictest0-21swapper/300:26:093
2298899271,13cyclictest0-21swapper/321:16:473
2298899271,12cyclictest0-21swapper/322:59:473
2298899271,12cyclictest0-21swapper/300:35:153
2298899271,11cyclictest11682-21diskmemload23:52:153
2298899271,11cyclictest0-21swapper/300:11:513
22976992724,2cyclictest0-21swapper/120:45:061
2297699271,6cyclictest0-21swapper/122:23:551
2297699271,19cyclictest0-21swapper/122:05:551
2296999275,11cyclictest0-21swapper/020:10:020
2296999274,11cyclictest15480-21awk20:05:010
2298899261,8cyclictest0-21swapper/319:56:313
2298899261,14cyclictest0-21swapper/300:30:153
2298899261,12cyclictest0-21swapper/320:51:113
2298899261,11cyclictest0-21swapper/323:58:233
2298899260,10cyclictest0-21swapper/323:16:413
2297699262,3cyclictest3517-21munin-run22:05:011
2297699262,21cyclictest7226-21hddtemp_smartct23:25:151
2297699262,15cyclictest0-21swapper/121:28:141
2297699262,15cyclictest0-21swapper/121:14:111
2296999260,17cyclictest4504-21kworker/0:100:32:450
2296999260,10cyclictest8494-21kworker/0:219:47:370
25492250,2sleep00-21swapper/019:35:110
22988992511,3cyclictest23989-21sshd20:21:393
2298899251,13cyclictest0-21swapper/319:20:513
2298899251,12cyclictest0-21swapper/321:35:033
2298899251,12cyclictest0-21swapper/321:09:473
2298899251,11cyclictest0-21swapper/323:32:433
2298899251,11cyclictest0-21swapper/322:54:153
2298899251,11cyclictest0-21swapper/322:13:353
22988992510,9cyclictest0-21swapper/320:27:393
2298899250,13cyclictest0-21swapper/321:52:073
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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