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2026-06-20 - 04:41

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 Sat Jun 20, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3081499994,72cyclictest0-21swapper/023:44:300
3081499994,72cyclictest0-21swapper/023:44:300
3081499984,86cyclictest0-21swapper/022:38:030
3081499955,68cyclictest0-21swapper/023:59:200
3081499953,9cyclictest7245-21munin-run19:09:180
3081499946,12cyclictest0-21swapper/023:09:310
3081499944,72cyclictest0-21swapper/022:44:220
3081499944,70cyclictest0-21swapper/022:02:380
3081499944,67cyclictest0-21swapper/023:39:210
3081499944,65cyclictest0-21swapper/022:43:450
219499940,4rtkit-daemon12007-21fschecks_count21:19:311
3081499933,72cyclictest20186-21time23:54:280
219499930,5rtkit-daemon107550irq/46-eth023:24:412
3081499924,69cyclictest0-21swapper/022:14:390
3081499924,65cyclictest0-21swapper/000:07:540
3081499923,8cyclictest107550irq/46-eth023:33:370
3081499923,21cyclictest0-21swapper/021:44:460
3081499914,71cyclictest0-21swapper/023:37:330
3081499914,71cyclictest0-21swapper/021:24:520
3081499914,69cyclictest0-21swapper/022:59:280
3081499914,69cyclictest0-21swapper/022:59:280
3081499914,68cyclictest0-21swapper/023:24:190
3081499914,64cyclictest0-21swapper/021:00:000
3081499914,13cyclictest0-21swapper/022:04:360
3081499913,62cyclictest0-21swapper/021:08:380
30814999120,50cyclictest20034-21df22:19:250
30814999120,50cyclictest20034-21df22:19:250
219499910,3rtkit-daemon18-21rcuc/118:54:521
3081499908,64cyclictest0-21swapper/021:56:350
3081499904,68cyclictest0-21swapper/023:51:540
3081499904,67cyclictest0-21swapper/018:50:170
3081499903,69cyclictest0-21swapper/023:14:260
3081499903,69cyclictest0-21swapper/021:30:210
3081499903,63cyclictest0-21swapper/021:52:170
3081499895,67cyclictest0-21swapper/022:52:070
3081499894,68cyclictest0-21swapper/023:19:310
3081499894,68cyclictest0-21swapper/020:34:280
3081499894,63cyclictest0-21swapper/022:54:430
3081499894,63cyclictest0-21swapper/022:30:110
3081499894,62cyclictest0-21swapper/022:26:370
3081499894,61cyclictest0-21swapper/021:43:000
30814998917,55cyclictest0-21swapper/020:53:430
3081499884,60cyclictest0-21swapper/021:09:330
3081499883,68cyclictest0-21swapper/022:09:390
3081499883,21cyclictest0-21swapper/000:11:370
30814998816,7cyclictest23855-21ssh21:36:350
30814998816,7cyclictest23855-21ssh21:36:350
3081499874,67cyclictest0-21swapper/019:47:220
3081499874,59cyclictest0-21swapper/020:57:060
3081499874,59cyclictest0-21swapper/020:57:060
3081499873,8cyclictest107550irq/46-eth021:17:340
3081499864,72cyclictest0-21swapper/021:19:390
3081499864,66cyclictest0-21swapper/020:20:310
3081499864,58cyclictest0-21swapper/019:29:330
3081499864,58cyclictest0-21swapper/019:29:330
3081499863,68cyclictest0-21swapper/023:09:040
3081499844,73cyclictest0-21swapper/019:15:200
3081499844,64cyclictest0-21swapper/020:45:350
3081499834,63cyclictest0-21swapper/000:15:240
3081499834,17cyclictest0-21swapper/019:19:450
3081499833,63cyclictest0-21swapper/020:29:260
3081499833,62cyclictest0-21swapper/019:49:520
30814998214,9cyclictest0-21swapper/020:25:310
3081499813,62cyclictest0-21swapper/019:09:310
30814998115,7cyclictest19403-21munin-node19:34:290
30814998111,9cyclictest8067-21sshd20:15:060
3081499804,12cyclictest0-21swapper/018:49:200
3081499804,12cyclictest0-21swapper/018:49:200
3081499794,12cyclictest0-21swapper/019:24:360
3081499794,12cyclictest0-21swapper/019:24:360
3081499773,66cyclictest0-21swapper/019:54:300
3081499773,65cyclictest0-21swapper/019:59:290
3081499773,56cyclictest0-21swapper/018:59:340
30814997710,12cyclictest0-21swapper/018:54:370
3081499764,66cyclictest0-21swapper/020:39:320
3081499764,14cyclictest0-21swapper/020:04:380
3081499762,21cyclictest0-21swapper/020:10:290
3081499762,21cyclictest0-21swapper/020:10:290
3081499754,64cyclictest0-21swapper/019:39:330
219499670,6rtkit-daemon0-21swapper/220:59:323
219499660,7rtkit-daemon0-21swapper/219:52:273
219499660,4rtkit-daemon2193-21rtkit-daemon22:58:121
219499650,6rtkit-daemon0-21swapper/220:54:023
219499640,6rtkit-daemon0-21swapper/223:33:483
219499640,6rtkit-daemon0-21swapper/223:25:113
219499640,6rtkit-daemon0-21swapper/220:54:173
219499640,6rtkit-daemon0-21swapper/220:54:173
219499640,5rtkit-daemon2193-21rtkit-daemon23:59:321
219499630,4rtkit-daemon2193-21rtkit-daemon21:46:231
3081899624,39cyclictest0-21swapper/120:53:051
277932624,50sleep30-21swapper/322:29:393
3081999618,47cyclictest0-21swapper/221:08:262
3081899615,31cyclictest0-21swapper/123:29:291
3081899604,31cyclictest0-21swapper/121:59:451
30818996023,13cyclictest10158-21iostat_ios23:39:301
292072605,46sleep329248-21grep18:44:343
292072605,46sleep329248-21grep18:44:343
219499600,7rtkit-daemon2193-21rtkit-daemon21:10:461
219499600,5rtkit-daemon2193-21rtkit-daemon23:56:401
219499600,4rtkit-daemon2193-21rtkit-daemon21:27:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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