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2026-03-15 - 09:00

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 Sun Mar 15, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1123621100,3sleep3361ktimersoftd/323:09:063
256792950,2sleep00-21swapper/021:55:090
154512810,4sleep015-21rcuc/021:39:290
296152790,4sleep337-21ksoftirqd/322:02:183
248599740,4rtkit-daemon2484-21rtkit-daemon21:57:183
7944997213,51cyclictest0-21swapper/321:29:003
7942997141,13cyclictest0-21swapper/122:35:521
794499686,54cyclictest1419-21runrttasks19:46:033
7944996611,48cyclictest0-21swapper/320:33:483
7942996641,11cyclictest0-21swapper/120:19:071
7942996640,12cyclictest0-21swapper/121:19:081
7942996639,12cyclictest0-21swapper/122:48:441
7940996612,36cyclictest8312-21rm22:18:480
794499654,53cyclictest0-21swapper/321:38:363
794499654,53cyclictest0-21swapper/321:38:363
794099655,37cyclictest0-21swapper/021:48:100
794499645,51cyclictest0-21swapper/322:29:023
7943996446,12cyclictest0-21swapper/221:14:032
7942996422,25cyclictest6391-21unixbench-2d22:14:071
169432643,12sleep30-21swapper/320:54:053
169432643,12sleep30-21swapper/320:54:053
7942996336,13cyclictest0-21swapper/120:40:131
794499622,54cyclictest0-21swapper/321:48:113
7942996238,11cyclictest0-21swapper/121:54:081
7942996218,27cyclictest0-21swapper/120:54:191
7942996218,27cyclictest0-21swapper/120:54:191
248599620,5rtkit-daemon2484-21rtkit-daemon20:03:152
794499614,51cyclictest0-21swapper/320:27:073
794499614,14cyclictest0-21swapper/322:24:063
794299614,50cyclictest0-21swapper/122:24:021
7942996139,11cyclictest0-21swapper/120:07:021
7942996136,10cyclictest0-21swapper/120:48:581
794099615,39cyclictest0-21swapper/022:27:050
794099615,38cyclictest1419-21runrttasks20:33:300
45032610,6sleep24504-21wc19:49:002
794499606,47cyclictest1419-21runrttasks22:48:013
794499604,49cyclictest0-21swapper/322:33:453
794499603,52cyclictest0-21swapper/320:30:283
7943996041,12cyclictest0-21swapper/220:48:572
794399603,49cyclictest0-21swapper/218:08:542
794399603,49cyclictest0-21swapper/218:08:542
7942996038,10cyclictest0-21swapper/122:43:231
7942996037,9cyclictest16826-21taskset21:43:441
7942996037,11cyclictest0-21swapper/122:07:461
7940996022,14cyclictest1419-21runrttasks23:04:210
7940996010,7cyclictest41ktimersoftd/020:18:550
20492603,12sleep20-21swapper/222:57:532
20492603,12sleep20-21swapper/222:57:532
7943995937,14cyclictest0-21swapper/222:20:482
7942995937,11cyclictest0-21swapper/120:01:141
7942995937,10cyclictest0-21swapper/119:53:511
7942995936,12cyclictest0-21swapper/120:30:061
7942995936,11cyclictest0-21swapper/122:02:281
7942995936,11cyclictest0-21swapper/121:16:051
7942995912,24cyclictest0-21swapper/121:08:591
267812594,12sleep00-21swapper/019:29:120
248599590,4rtkit-daemon2484-21rtkit-daemon21:04:133
228722593,10sleep022964-21memory18:14:070
162792594,13sleep20-21swapper/221:42:342
794399583,47cyclictest0-21swapper/220:34:072
794299584,30cyclictest0-21swapper/121:34:051
794299584,30cyclictest0-21swapper/121:34:051
7942995835,11cyclictest0-21swapper/122:59:021
794099585,36cyclictest0-21swapper/020:17:150
794099585,36cyclictest0-21swapper/020:17:150
7940995840,11cyclictest6428-21tail22:14:070
794099584,35cyclictest0-21swapper/021:18:500
7940995822,20cyclictest0-21swapper/022:34:440
226242583,7sleep022631-21latency_hist19:23:400
794499576,34cyclictest0-21swapper/320:01:273
794499574,8cyclictest18919-21munin-node20:59:093
794499574,13cyclictest0-21swapper/322:54:003
794499574,13cyclictest0-21swapper/322:54:003
794499573,9cyclictest5898-21needreboot22:13:593
794499573,13cyclictest0-21swapper/322:49:033
7944995717,22cyclictest0-21swapper/319:48:503
7944995713,8cyclictest73732sleep320:39:223
794399573,47cyclictest22389-21ssh21:50:222
7942995743,8cyclictest23875-21timerandwakeup21:04:081
7942995737,8cyclictest20501-21aten2.4-expect19:18:511
7942995736,10cyclictest0-21swapper/120:45:221
212742573,46sleep20-21swapper/221:00:582
794499564,35cyclictest0-21swapper/322:21:293
794499564,13cyclictest0-21swapper/320:03:523
794499564,12cyclictest0-21swapper/322:08:363
794399564,45cyclictest0-21swapper/222:49:022
794399564,44cyclictest0-21swapper/222:43:482
7943995637,13cyclictest0-21swapper/221:59:562
794399563,47cyclictest0-21swapper/220:56:442
794399563,47cyclictest0-21swapper/220:56:442
794399563,46cyclictest0-21swapper/223:08:482
7942995634,11cyclictest0-21swapper/120:26:081
7942995634,10cyclictest0-21swapper/120:14:091
7942995634,10cyclictest0-21swapper/120:14:091
794099564,45cyclictest0-21swapper/022:43:460
794099564,31cyclictest0-21swapper/020:58:370
794099564,31cyclictest0-21swapper/020:58:370
7940995611,26cyclictest0-21swapper/020:38:590
40872563,12sleep20-21swapper/221:23:562
149962563,46sleep00-21swapper/020:52:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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