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2026-08-15 - 02:33

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 Aug 15, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
470799964,84cyclictest0-21swapper/122:36:311
470799946,79cyclictest0-21swapper/117:56:401
470799934,68cyclictest0-21swapper/123:16:591
470999924,9cyclictest107550irq/46-eth021:07:483
470899924,40cyclictest0-21swapper/223:01:412
470899924,40cyclictest0-21swapper/223:01:412
4708999236,9cyclictest29788-21df_abs23:11:442
470799924,80cyclictest0-21swapper/120:48:211
4709999132,44cyclictest0-21swapper/322:02:173
470899914,40cyclictest0-21swapper/220:52:032
470899913,43cyclictest0-21swapper/220:31:482
4708999113,29cyclictest0-21swapper/222:36:582
470799916,68cyclictest0-21swapper/121:50:281
470799914,80cyclictest0-21swapper/123:22:091
470799914,79cyclictest0-21swapper/120:54:031
470799914,71cyclictest0-21swapper/121:16:471
470799914,67cyclictest0-21swapper/120:41:371
4709999036,48cyclictest20362-21gltestperf22:56:463
470799905,78cyclictest0-21swapper/121:58:281
470799903,60cyclictest15107-21fw_packets20:21:551
470799903,60cyclictest15107-21fw_packets20:21:551
470999894,32cyclictest26492-21df23:06:433
470899895,26cyclictest0-21swapper/222:34:022
4708998937,9cyclictest12385-21aten2.4-expect21:56:422
470799895,76cyclictest0-21swapper/121:06:511
470799894,64cyclictest0-21swapper/120:08:321
470799893,62cyclictest16844-21netstat22:01:551
4709998836,45cyclictest1227-21runrttasks20:16:493
4708998835,9cyclictest14720-21unixbench_singl22:47:042
470899883,43cyclictest0-21swapper/220:12:052
470799886,63cyclictest0-21swapper/122:28:541
470799886,63cyclictest0-21swapper/122:28:541
470799885,52cyclictest0-21swapper/121:41:411
470799885,52cyclictest0-21swapper/121:41:411
470799884,77cyclictest0-21swapper/122:14:371
470799884,52cyclictest0-21swapper/121:36:441
470799883,77cyclictest0-21swapper/121:25:261
470799883,62cyclictest17220-21if_eth022:51:501
4707998815,50cyclictest0-21swapper/120:26:551
4709998731,8cyclictest6626-21tr22:36:433
470999873,35cyclictest0-21swapper/321:21:463
4709998716,19cyclictest0-21swapper/320:56:483
470899874,41cyclictest0-21swapper/220:36:492
4708998736,9cyclictest27449-21munin-node20:41:462
470799874,76cyclictest0-21swapper/118:20:131
470799874,76cyclictest0-21swapper/118:20:131
470799874,62cyclictest0-21swapper/122:40:341
470799873,61cyclictest0-21swapper/122:17:031
470899864,43cyclictest0-21swapper/221:46:322
470899864,43cyclictest0-21swapper/221:46:322
470899864,39cyclictest0-21swapper/221:51:562
4708998617,32cyclictest0-21swapper/218:47:032
470799868,54cyclictest107550irq/46-eth022:44:321
470799865,74cyclictest0-21swapper/122:09:281
470799864,9cyclictest1227-21runrttasks18:56:581
470799864,75cyclictest0-21swapper/122:21:521
470799864,65cyclictest0-21swapper/121:55:391
470799864,65cyclictest0-21swapper/119:16:391
470799864,63cyclictest0-21swapper/120:01:491
470799863,61cyclictest0-21swapper/121:26:451
4707998617,50cyclictest17696-21kworker/1:020:32:091
470999853,34cyclictest0-21swapper/322:51:473
4708998538,11cyclictest0-21swapper/221:37:192
470799856,72cyclictest0-21swapper/123:14:271
470799853,8cyclictest9730-21processes21:02:021
470799853,8cyclictest9730-21processes21:02:021
470799853,8cyclictest22899-21aten2.4-expect23:01:401
470799853,8cyclictest22899-21aten2.4-expect23:01:401
470999849,34cyclictest0-21swapper/320:54:023
4709998426,11cyclictest0-21swapper/321:31:453
470799844,64cyclictest0-21swapper/122:56:451
470799844,56cyclictest0-21swapper/120:36:551
470799843,65cyclictest0-21swapper/119:41:471
470799843,65cyclictest0-21swapper/119:41:471
470799843,58cyclictest15137-21ssh21:11:471
4707998413,64cyclictest18949-21cat19:31:571
4707998412,50cyclictest0-21swapper/121:31:441
470999833,11cyclictest0-21swapper/321:12:043
4709998327,9cyclictest15628-21open_files20:22:033
4709998327,9cyclictest15628-21open_files20:22:033
4709998324,9cyclictest26326-21switchtime21:27:033
4709998316,11cyclictest0-21swapper/321:17:073
470899836,37cyclictest0-21swapper/220:06:472
4708998337,9cyclictest23900-21kworker/2:021:07:002
4708998337,12cyclictest0-21swapper/220:21:552
4708998337,12cyclictest0-21swapper/220:21:552
470799837,68cyclictest0-21swapper/122:46:591
470799833,8cyclictest9573-21sh20:12:111
470799833,50cyclictest0-21swapper/120:19:471
470799832,64cyclictest7373-21ssh20:58:571
4707998311,54cyclictest0-21swapper/123:08:081
470999823,35cyclictest0-21swapper/322:21:523
470799824,9cyclictest7092-21iostat_ios19:06:591
470799824,47cyclictest0-21swapper/117:56:561
470799823,9cyclictest31250-21munin-node19:57:021
4709998129,12cyclictest0-21swapper/322:31:093
4709998129,12cyclictest0-21swapper/322:31:093
470899814,39cyclictest0-21swapper/222:26:412
470899814,39cyclictest0-21swapper/222:26:412
470799814,66cyclictest0-21swapper/119:27:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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