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2026-03-14 - 09:13

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 Mar 14, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2485991120,6rtkit-daemon0-21swapper/021:48:261
17694991083,8cyclictest17071-21kworker/0:221:38:130
116242960,6sleep118-21rcuc/119:44:561
1769499954,74cyclictest0-21swapper/022:22:530
1769499953,9cyclictest1287-21snmpd20:49:560
17694999510,77cyclictest0-21swapper/021:54:570
1769499944,66cyclictest0-21swapper/020:19:510
17700999329,8cyclictest8743-21ssh21:15:073
1769499934,72cyclictest0-21swapper/020:40:020
1769499934,12cyclictest0-21swapper/022:14:460
1769499933,67cyclictest0-21swapper/018:05:070
1769499925,63cyclictest12454-21cpuspeed20:34:460
1769499924,64cyclictest0-21swapper/022:30:000
1770099914,36cyclictest0-21swapper/323:09:473
1770099914,36cyclictest0-21swapper/323:09:473
1769499915,63cyclictest0-21swapper/019:49:490
1769499915,62cyclictest0-21swapper/020:30:020
1769499913,68cyclictest24771-21ssh21:39:530
1769499913,68cyclictest24771-21ssh21:39:530
17694999114,59cyclictest0-21swapper/021:00:050
17700999022,32cyclictest28699-21cpuspeed_turbos22:34:423
1769499904,69cyclictest0-21swapper/020:54:550
1769499904,12cyclictest0-21swapper/023:04:500
1769499904,12cyclictest0-21swapper/023:04:500
1769499903,9cyclictest3654-21tune2fs22:44:470
17700998936,10cyclictest22575-21munin-node20:49:473
1769499898,8cyclictest121850irq/46-eth020:09:500
1769499894,69cyclictest0-21swapper/021:47:030
1769499894,64cyclictest0-21swapper/021:05:040
1769499894,64cyclictest0-21swapper/021:05:040
1769499894,13cyclictest0-21swapper/022:54:450
1769499894,12cyclictest0-21swapper/021:15:350
1769499893,12cyclictest0-21swapper/018:25:110
1769499893,11cyclictest0-21swapper/020:19:280
17694998916,55cyclictest0-21swapper/021:09:490
17694998910,61cyclictest0-21swapper/022:59:430
17700998830,8cyclictest29060-21munin-node21:00:023
1769499884,62cyclictest0-21swapper/019:55:010
1769499884,13cyclictest0-21swapper/019:20:070
1769499884,12cyclictest0-21swapper/022:09:180
1769499883,66cyclictest30798-21ssh22:36:530
1769499883,66cyclictest0-21swapper/022:24:520
1769499883,66cyclictest0-21swapper/022:24:520
1769499883,65cyclictest23984-21munin-node17:55:050
1769499883,65cyclictest20239-21ssh23:09:430
1769499883,65cyclictest20239-21ssh23:09:430
1769499883,65cyclictest1413-21ssh22:40:410
1769499883,12cyclictest0-21swapper/021:24:390
1769499883,12cyclictest0-21swapper/020:00:440
1769499879,10cyclictest0-21swapper/022:03:260
1769499877,10cyclictest0-21swapper/022:54:000
1769499874,13cyclictest0-21swapper/018:30:030
1769499874,12cyclictest0-21swapper/022:14:070
1769499874,12cyclictest0-21swapper/020:24:470
1769499874,12cyclictest0-21swapper/020:24:470
1769499874,12cyclictest0-21swapper/019:09:510
1769499873,8cyclictest10828-21ssh21:19:510
1769499873,63cyclictest0-21swapper/020:07:130
1769499873,11cyclictest0-21swapper/018:20:030
1769499865,65cyclictest0-21swapper/020:45:010
1769499864,59cyclictest0-21swapper/019:04:570
1769499864,12cyclictest0-21swapper/021:49:440
1769499864,12cyclictest0-21swapper/019:45:240
1769499864,12cyclictest0-21swapper/018:54:490
1769499863,65cyclictest0-21swapper/019:15:190
1769499854,12cyclictest0-21swapper/021:34:100
1769499854,10cyclictest1419-21runrttasks19:40:010
1769499854,10cyclictest1419-21runrttasks19:40:010
1770099843,43cyclictest0-21swapper/321:09:473
1769499845,69cyclictest17696-21idleruntime-cro17:44:410
1769499844,12cyclictest0-21swapper/019:30:080
1769899834,28cyclictest0-21swapper/121:41:301
1769899834,28cyclictest0-21swapper/121:41:301
1769499835,12cyclictest0-21swapper/018:49:560
1769499834,9cyclictest31992-21sadc18:14:390
1769499834,62cyclictest0-21swapper/017:59:510
1769499834,12cyclictest0-21swapper/018:59:480
1769499834,12cyclictest0-21swapper/018:44:380
17700998038,10cyclictest0-21swapper/322:48:303
17700998037,10cyclictest0-21swapper/322:54:483
17700998033,7cyclictest10425-21diskmemload20:08:323
1769499803,60cyclictest0-21swapper/018:35:120
1769499795,10cyclictest121850irq/46-eth017:54:400
1769499794,12cyclictest0-21swapper/018:44:580
1769499794,12cyclictest0-21swapper/018:14:510
1769499794,12cyclictest0-21swapper/018:14:510
17700997837,10cyclictest0-21swapper/320:30:533
1769499783,13cyclictest0-21swapper/019:34:480
1769499764,54cyclictest1901-21grep19:24:570
93522750,3sleep2281ktimersoftd/218:34:402
1769499734,63cyclictest0-21swapper/017:44:560
1769999692,61cyclictest0-21swapper/221:41:232
1769999692,61cyclictest0-21swapper/221:41:232
1769899683,50cyclictest10642-21tail20:30:061
17699996720,26cyclictest22356-21aten_r1power_cu20:49:452
1769899654,23cyclictest0-21swapper/123:03:131
248599640,5rtkit-daemon2484-21rtkit-daemon21:29:121
248599640,5rtkit-daemon2484-21rtkit-daemon21:09:201
248599640,5rtkit-daemon2484-21rtkit-daemon21:09:201
248599640,5rtkit-daemon2484-21rtkit-daemon20:50:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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