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2026-08-01 - 19:01

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 01, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4037991044,49cyclictest0-21swapper/109:24:491
4035999830,8cyclictest29059-21diskmemload11:34:320
403799974,49cyclictest0-21swapper/110:00:081
4035999327,10cyclictest1124-21snmpd08:47:010
403799926,46cyclictest0-21swapper/106:39:371
403799926,46cyclictest0-21swapper/106:39:371
4035999225,12cyclictest0-21swapper/011:04:330
4035999135,13cyclictest0-21swapper/011:02:390
4035999135,13cyclictest0-21swapper/011:02:390
4035999026,13cyclictest0-21swapper/008:04:490
403599894,44cyclictest0-21swapper/009:39:420
219499890,4rtkit-daemon19892-21kworker/3:108:22:063
4035998834,14cyclictest0-21swapper/009:04:280
403599863,29cyclictest0-21swapper/007:24:410
403599863,29cyclictest0-21swapper/007:24:410
4035998627,13cyclictest0-21swapper/010:50:290
4035998619,9cyclictest381-21cat07:09:200
4035998533,12cyclictest0-21swapper/010:54:370
4035998533,10cyclictest19796-21cut06:39:490
4035998533,10cyclictest19796-21cut06:39:490
4035998526,12cyclictest0-21swapper/008:59:160
403599843,12cyclictest0-21swapper/008:16:340
4035998421,10cyclictest4573-21nscd10:09:120
4035998411,32cyclictest0-21swapper/009:19:150
4039998243,11cyclictest24812-21kworker/3:010:29:243
4039998237,22cyclictest0-21swapper/308:59:303
4039998035,40cyclictest32360-21aten2.4-expect11:29:223
4035998026,12cyclictest0-21swapper/008:50:200
4035998026,12cyclictest0-21swapper/008:50:200
4039997823,48cyclictest26945-21sh09:42:053
4039997734,25cyclictest15223-21ssh10:14:183
4039997732,22cyclictest0-21swapper/309:16:333
4039997726,45cyclictest0-21swapper/309:48:473
4039997528,29cyclictest10184-21munin-node07:29:413
4039997527,41cyclictest0-21swapper/308:38:243
4039997435,23cyclictest28683-21sensors08:54:483
4039997430,28cyclictest0-21swapper/308:16:513
4039997328,29cyclictest19860-21ntp_offset10:19:393
4039997328,29cyclictest19860-21ntp_offset10:19:393
4039997328,27cyclictest0-21swapper/311:10:113
4039997235,18cyclictest4366-21ssh11:34:333
4039997229,22cyclictest0-21swapper/308:52:223
4039997229,22cyclictest0-21swapper/308:52:223
4039997228,26cyclictest11128-21diskstats08:29:333
4039997226,28cyclictest1177-21ssh09:52:193
4039997226,27cyclictest0-21swapper/310:06:123
4039997223,32cyclictest0-21swapper/310:09:463
4039997135,29cyclictest2570-21df_abs09:54:313
4039997132,32cyclictest0-21swapper/308:24:273
4039997130,21cyclictest0-21swapper/310:02:083
4039997128,18cyclictest107550irq/46-eth011:08:193
4039997039,16cyclictest107550irq/46-eth008:39:483
4039997033,17cyclictest107550irq/46-eth010:34:223
4039997031,15cyclictest27887-21crond06:59:203
4039997028,26cyclictest0-21swapper/311:00:003
4039997028,26cyclictest0-21swapper/311:00:003
4039997028,22cyclictest107550irq/46-eth009:33:093
4039997026,12cyclictest0-21swapper/310:49:383
4039996937,10cyclictest107550irq/46-eth009:19:343
4039996931,33cyclictest0-21swapper/311:28:133
4039996930,22cyclictest0-21swapper/310:24:163
4039996927,26cyclictest0-21swapper/309:11:233
4039996925,25cyclictest0-21swapper/310:39:383
4039996923,26cyclictest0-21swapper/309:34:483
4039996923,26cyclictest0-21swapper/309:34:483
219499690,8rtkit-daemon0-21swapper/206:17:563
4039996830,19cyclictest0-21swapper/311:18:333
4039996828,24cyclictest25830-21aten2.4-expect11:19:223
4039996828,22cyclictest29531-21munin-node08:09:303
4039996828,22cyclictest29531-21munin-node08:09:303
219499680,8rtkit-daemon0-21swapper/206:39:403
219499680,8rtkit-daemon0-21swapper/206:39:403
219499680,8rtkit-daemon0-21swapper/206:31:033
219499680,8rtkit-daemon0-21swapper/206:21:263
4039996734,11cyclictest107550irq/46-eth010:44:153
4039996730,16cyclictest107550irq/46-eth010:54:263
4039996729,21cyclictest0-21swapper/309:06:323
4039996727,25cyclictest0-21swapper/307:47:153
4039996727,19cyclictest107550irq/46-eth009:24:303
4039996726,23cyclictest5504-21aten2.4-expect07:19:303
4039996723,24cyclictest0-21swapper/308:45:103
219499670,9rtkit-daemon0-21swapper/208:24:510
4039996627,32cyclictest31528-21munin-node07:04:433
4039996615,45cyclictest0-21swapper/306:36:393
4038996610,48cyclictest1227-21runrttasks10:55:422
219499660,7rtkit-daemon0-21swapper/210:49:231
219499660,7rtkit-daemon0-21swapper/110:03:022
4039996543,13cyclictest5186-21hwlatdetect06:09:433
4039996523,29cyclictest0-21swapper/307:24:323
4039996523,29cyclictest0-21swapper/307:24:323
219499650,7rtkit-daemon0-21swapper/206:24:333
4039996444,13cyclictest24279-21grep06:49:423
4039996343,14cyclictest29823-21unixbench_multi06:59:553
4039996335,21cyclictest0-21swapper/307:54:463
4039996321,20cyclictest0-21swapper/307:50:093
4038996344,13cyclictest0-21swapper/210:29:322
4038996313,42cyclictest0-21swapper/208:13:442
4038996313,42cyclictest0-21swapper/208:13:442
403799636,49cyclictest0-21swapper/109:34:401
403799636,49cyclictest0-21swapper/109:34:401
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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