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2026-09-08 - 18:35

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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.

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 rack4slot1s.osadl.org (updated Tue Sep 08, 2026 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2580221160,2sleep20-21swapper/209:24:302
2580221160,2sleep20-21swapper/209:24:302
2365421010,3sleep20-21swapper/207:54:132
305552940,2chrt0-21swapper/211:04:272
305552940,2chrt0-21swapper/211:04:272
233462690,3sleep20-21swapper/210:44:292
233462690,3sleep20-21swapper/210:44:292
79822670,2sleep07985-21grep10:04:240
254522660,3sleep20-21swapper/210:49:322
301722640,2sleep129419-21/usr/sbin/munin08:09:321
301722640,2sleep129419-21/usr/sbin/munin08:09:321
310582600,3sleep30-21swapper/308:14:123
310582600,3sleep30-21swapper/308:14:123
282372590,2chrt0-21swapper/010:59:190
15092580,2chrt0-21swapper/312:39:283
15092580,2chrt0-21swapper/312:39:283
190152570,3chrt0-21swapper/007:39:310
190152570,3chrt0-21swapper/007:39:310
203062530,2sleep30-21swapper/307:44:253
203062530,2sleep30-21swapper/307:44:253
14412530,3sleep20-21swapper/209:44:362
75882520,6sleep07592-21kernelversion11:29:260
226452510,9sleep0171ktimers/009:14:350
226452510,9sleep0171ktimers/009:14:350
103082510,3chrt0-21swapper/010:09:300
201982480,4sleep20-21swapper/207:44:242
201982480,4sleep20-21swapper/207:44:242
915699470,2cyclictest700-21192.168.115.40-manager09:52:301
915699460,8cyclictest8630-21taskset11:32:591
915699451,7cyclictest26061-21taskset10:52:481
915699451,7cyclictest21597-21taskset12:05:481
915699451,7cyclictest21597-21taskset12:05:481
220502450,3chrt0-21swapper/209:14:292
220502450,3chrt0-21swapper/209:14:292
9156994426,16cyclictest2500-21latency_hist12:44:121
9156994426,16cyclictest2500-21latency_hist12:44:121
915699441,7cyclictest28330-21taskset09:30:191
915699441,7cyclictest28330-21taskset09:30:191
915699441,29cyclictest20905-21taskset09:11:131
915699441,29cyclictest20905-21taskset09:11:131
915699441,27cyclictest19602-21taskset07:41:081
915699441,27cyclictest19602-21taskset07:41:081
915699441,26cyclictest0-21swapper/110:33:371
291572440,2sleep20-21swapper/210:59:332
291572440,2sleep20-21swapper/210:59:332
291572440,2sleep20-21swapper/210:59:332
127172440,3sleep00-21swapper/008:49:300
915699431,8cyclictest6643-21taskset11:26:241
915699431,8cyclictest6643-21taskset11:26:241
915699431,7cyclictest15428-21taskset08:57:571
915699431,6cyclictest368-21runrttasks08:18:111
915699421,4cyclictest13571-21seq08:53:241
915699421,2cyclictest700-21192.168.115.40-manager10:57:151
915699421,2cyclictest700-21192.168.115.40-manager10:57:151
915699420,2cyclictest700-21192.168.115.40-manager10:28:021
915699416,20cyclictest749-21runrttasks08:36:331
915699416,20cyclictest749-21runrttasks08:36:331
915699411,2cyclictest0-21swapper/111:49:351
915699411,2cyclictest0-21swapper/111:49:351
915699410,3cyclictest700-21192.168.115.40-manager12:16:431
915699410,3cyclictest700-21192.168.115.40-manager12:16:431
915699410,3cyclictest700-21192.168.115.40-manager10:37:061
915699410,3cyclictest700-21192.168.115.40-manager10:37:061
915699410,3cyclictest700-21192.168.115.40-manager09:16:321
915699410,3cyclictest700-21192.168.115.40-manager09:16:321
915699401,28cyclictest5272-21seq09:55:271
915699401,28cyclictest5272-21seq09:55:271
915699401,24cyclictest23239-21taskset07:49:431
915699401,1cyclictest0-21swapper/110:23:321
915699401,1cyclictest0-21swapper/110:23:321
915699400,3cyclictest700-21192.168.115.40-manager12:33:321
915699400,3cyclictest700-21192.168.115.40-manager11:00:141
915699400,3cyclictest700-21192.168.115.40-manager11:00:141
915699400,3cyclictest700-21192.168.115.40-manager11:00:141
915699400,3cyclictest700-21192.168.115.40-manager09:03:151
915699400,3cyclictest700-21192.168.115.40-manager09:03:151
915699400,2cyclictest700-21192.168.115.40-manager10:09:571
110122400,3sleep20-21swapper/211:39:262
110122400,3sleep20-21swapper/211:39:262
915699397,22cyclictest0-21swapper/111:21:261
915699397,22cyclictest0-21swapper/111:21:261
915699397,22cyclictest0-21swapper/111:21:261
915699391,4cyclictest9302-21taskset10:08:411
915699391,4cyclictest0-21swapper/111:55:431
915699391,27cyclictest749-21runrttasks10:00:041
915699391,27cyclictest749-21runrttasks10:00:041
915699391,26cyclictest10372-21taskset11:36:001
915699391,26cyclictest10372-21taskset11:36:001
915699390,7cyclictest3033-21seq11:18:361
915699390,3cyclictest700-21192.168.115.40-manager12:21:551
915699390,3cyclictest700-21192.168.115.40-manager12:21:551
915699390,3cyclictest700-21192.168.115.40-manager12:04:171
915699390,3cyclictest700-21192.168.115.40-manager12:04:171
11542390,4chrt0-21swapper/211:13:322
11542390,4chrt0-21swapper/211:13:322
915699381,9cyclictest23988-21taskset10:45:001
915699381,9cyclictest23988-21taskset10:45:001
915699380,2cyclictest700-21192.168.115.40-manager10:41:481
915699380,2cyclictest700-21192.168.115.40-manager10:41:481
915699371,8cyclictest23729-21irqstats09:19:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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