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2025-12-12 - 08:52

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 Fri Dec 12, 2025 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2136921350,36sleep021370-21cat20:55:400
2084499983,35cyclictest0-21swapper/020:43:100
2084499924,80cyclictest0-21swapper/019:30:410
2084499906,75cyclictest0-21swapper/023:10:370
2084499906,75cyclictest0-21swapper/023:10:370
20844998914,23cyclictest1901-21Xorg20:17:240
2084499883,32cyclictest7071-21unixbench_multi23:45:540
2084499875,13cyclictest0-21swapper/022:03:250
2084499874,28cyclictest0-21swapper/022:35:530
20844998727,53cyclictest0-21swapper/019:48:130
2084499854,34cyclictest0-21swapper/022:20:450
2084499854,27cyclictest0-21swapper/023:50:320
2084499854,27cyclictest0-21swapper/020:21:040
2084499854,27cyclictest0-21swapper/020:21:040
2084499853,9cyclictest30238-21munin-run23:30:190
2084499844,33cyclictest0-21swapper/022:25:510
2084499844,33cyclictest0-21swapper/022:25:510
2084499844,29cyclictest8326-21sed22:40:560
20844998431,45cyclictest4086-21wc21:25:510
20844998429,9cyclictest5501-21aten2.4-expect21:30:360
20844998413,12cyclictest0-21swapper/023:37:560
243799830,33rtkit-daemon0-21swapper/022:44:541
2084499835,33cyclictest0-21swapper/018:50:590
2084499835,26cyclictest0-21swapper/019:52:200
2084499834,34cyclictest0-21swapper/022:45:340
2084499834,26cyclictest0-21swapper/019:15:520
243799820,34rtkit-daemon0-21swapper/020:09:531
2084499825,27cyclictest0-21swapper/021:20:250
2084499825,27cyclictest0-21swapper/021:00:490
2084499824,32cyclictest0-21swapper/018:45:530
2084499824,31cyclictest0-21swapper/021:50:360
2084499824,16cyclictest0-21swapper/019:37:170
20844998226,13cyclictest26027-21wc22:10:540
20844998222,10cyclictest32093-21grep20:10:390
20844998221,16cyclictest1369-21runrttasks22:58:430
79272810,5chrt7928-21aten_r1power_en19:20:411
243799810,4rtkit-daemon2436-21rtkit-daemon18:50:562
2084499815,33cyclictest0-21swapper/023:58:380
2084499815,33cyclictest0-21swapper/023:58:380
2084499814,34cyclictest0-21swapper/021:05:400
2084499814,23cyclictest0-21swapper/019:10:420
20844998124,13cyclictest0-21swapper/022:05:540
2084499805,25cyclictest1369-21runrttasks19:42:390
2084499804,33cyclictest0-21swapper/023:40:300
2084499804,33cyclictest0-21swapper/020:25:470
2084499804,30cyclictest0-21swapper/019:20:470
2084499804,12cyclictest18664-21aten2.4-expect23:05:330
20844998024,12cyclictest0-21swapper/023:15:350
20844998023,10cyclictest28490-21sort18:55:430
20844998023,10cyclictest28490-21sort18:55:430
20844998017,7cyclictest13505-21latency_hist22:55:200
2084499795,13cyclictest0-21swapper/020:05:570
2084499794,24cyclictest0-21swapper/019:05:410
20844997930,9cyclictest17382-21tail21:55:340
2084499793,21cyclictest14904-21munin-node00:05:410
20844997924,11cyclictest1369-21runrttasks21:20:560
20844997922,14cyclictest0-21swapper/019:59:370
2084499785,24cyclictest1369-21runrttasks23:05:080
2084499784,29cyclictest18623-21head20:50:390
2084499783,31cyclictest0-21swapper/021:39:310
20844997823,12cyclictest0-21swapper/021:45:400
20844997823,12cyclictest0-21swapper/021:45:400
20844997812,9cyclictest114550irq/46-eth020:35:420
243799770,4rtkit-daemon2436-21rtkit-daemon23:10:233
243799770,4rtkit-daemon2436-21rtkit-daemon23:10:233
2084499774,32cyclictest0-21swapper/019:00:500
2084499774,30cyclictest0-21swapper/000:00:400
2084499774,24cyclictest21664-21cut18:40:480
20844997729,8cyclictest27417-21unixbench_singl23:20:530
20844997727,9cyclictest32136-21unixbench-2d23:30:550
243799760,11rtkit-daemon2436-21rtkit-daemon19:00:553
2084499764,22cyclictest0-21swapper/021:10:560
2084499764,22cyclictest0-21swapper/020:00:400
2084499754,24cyclictest0-21swapper/019:25:460
20844997422,12cyclictest0-21swapper/020:34:350
20845997313,54cyclictest0-21swapper/123:43:351
2084499734,15cyclictest10888-21cut21:40:410
20845996925,37cyclictest27882-21runrttasks18:54:061
20845996922,39cyclictest1189-21taskset20:11:371
20845996920,42cyclictest0-21swapper/123:35:181
20845996916,47cyclictest0-21swapper/122:57:501
20845996913,50cyclictest0-21swapper/122:50:201
2084599689,52cyclictest0-21swapper/100:05:441
20845996829,32cyclictest16440-21tr23:00:341
2084799674,55cyclictest0-21swapper/319:35:273
20845996625,34cyclictest8667-21hwlatdetect23:50:401
20845996623,34cyclictest22427-21cpu19:50:421
20845996617,42cyclictest0-21swapper/123:45:421
20845996617,42cyclictest0-21swapper/120:40:381
20845996611,47cyclictest0-21swapper/122:35:321
20845996522,37cyclictest12059-21munin-node19:26:041
20845996521,37cyclictest12697-21aten2.4-expect19:30:391
20845996520,27cyclictest1743-21munin-node20:15:591
2084799644,54cyclictest0-21swapper/323:41:383
2084599648,43cyclictest0-21swapper/123:59:431
2084599648,43cyclictest0-21swapper/123:59:431
20845996421,35cyclictest23449-21open_inodes22:05:501
20845996420,37cyclictest28228-21munin-node18:55:501
20845996420,37cyclictest28228-21munin-node18:55:501
20845996417,40cyclictest0-21swapper/123:35:391
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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