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2026-05-16 - 18:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #8

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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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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackbslot8s (updated Sat May 16, 2026 12:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12357662142102,20sleep30-21swapper/307:08:313
12357222125104,16sleep60-21swapper/607:07:536
123610999122122,0cyclictest0-21swapper/210:39:212
12356292120106,9sleep50-21swapper/507:06:325
12358472117103,9sleep10-21swapper/107:09:411
12355842117103,9sleep70-21swapper/707:05:547
12357742116102,9sleep20-21swapper/207:08:382
1235801211499,10sleep00-21swapper/007:08:590
1235675211399,9sleep40-21swapper/407:07:114
1236121991020,99cyclictest0-21swapper/507:15:585
1236121991020,100cyclictest0-21swapper/510:42:325
1236121991020,0cyclictest0-21swapper/509:47:465
12361049910295,5cyclictest553-21snmpd09:43:571
1236104991020,100cyclictest0-21swapper/108:45:051
1236104991020,100cyclictest0-21swapper/108:05:241
1236128991010,100cyclictest0-21swapper/711:28:047
1236128991010,100cyclictest0-21swapper/708:29:047
1236126991010,100cyclictest0-21swapper/607:42:116
12361219910199,2cyclictest553-21snmpd11:29:195
12361219910198,3cyclictest553-21snmpd12:26:565
1236121991010,100cyclictest0-21swapper/512:16:595
1236121991010,100cyclictest0-21swapper/510:27:555
1236121991010,100cyclictest0-21swapper/510:10:255
12361179910199,2cyclictest553-21snmpd12:05:404
12361129910199,2cyclictest553-21snmpd11:21:093
12361129910199,2cyclictest553-21snmpd09:44:213
12361129910199,2cyclictest553-21snmpd09:23:513
12361129910198,3cyclictest553-21snmpd11:30:403
12361129910198,2cyclictest553-21snmpd11:29:163
12361099910199,2cyclictest553-21snmpd09:50:242
123610999101100,1cyclictest553-21snmpd08:42:012
12361049910199,2cyclictest553-21snmpd12:22:471
12361049910199,2cyclictest553-21snmpd10:40:491
12361049910199,2cyclictest553-21snmpd07:50:541
12361049910199,2cyclictest0-21swapper/108:04:291
12361049910199,1cyclictest553-21snmpd12:09:051
1236104991010,101cyclictest0-21swapper/109:10:261
1236104991010,100cyclictest0-21swapper/107:39:231
1236128991000,99cyclictest0-21swapper/712:26:057
1236128991000,99cyclictest0-21swapper/709:40:187
1236128991000,99cyclictest0-21swapper/708:34:137
1236128991000,99cyclictest0-21swapper/708:13:547
1236128991000,99cyclictest0-21swapper/707:37:477
1236128991000,100cyclictest0-21swapper/711:22:057
1236128991000,100cyclictest0-21swapper/707:23:297
12361269910099,1cyclictest553-21snmpd12:35:196
12361269910099,1cyclictest553-21snmpd12:12:076
12361269910099,1cyclictest553-21snmpd11:15:576
12361269910099,1cyclictest553-21snmpd11:06:246
12361269910099,1cyclictest553-21snmpd09:56:016
12361269910099,1cyclictest553-21snmpd09:07:356
1236126991000,99cyclictest0-21swapper/610:01:076
1236126991000,99cyclictest0-21swapper/608:42:006
1236126991000,99cyclictest0-21swapper/607:56:486
1236126991000,1cyclictest0-21swapper/610:30:386
1236126991000,100cyclictest0-21swapper/609:32:126
1236126991000,100cyclictest0-21swapper/607:51:576
12361219910099,1cyclictest553-21snmpd09:22:185
12361219910099,1cyclictest553-21snmpd08:43:155
1236121991000,0cyclictest0-21swapper/512:09:595
12361179910099,1cyclictest553-21snmpd11:51:104
12361179910099,1cyclictest553-21snmpd10:20:024
12361179910099,1cyclictest553-21snmpd09:35:274
12361179910099,1cyclictest553-21snmpd09:18:364
12361179910099,1cyclictest553-21snmpd08:20:314
12361179910099,1cyclictest0-21swapper/408:50:264
12361179910098,2cyclictest553-21snmpd09:26:094
1236117991000,99cyclictest0-21swapper/408:46:474
1236117991000,100cyclictest0-21swapper/411:42:334
1236117991000,100cyclictest0-21swapper/411:36:074
1236117991000,100cyclictest0-21swapper/410:08:194
1236117991000,100cyclictest0-21swapper/409:59:164
1236117991000,100cyclictest0-21swapper/407:51:514
1236117991000,100cyclictest0-21swapper/407:25:144
12361129910099,1cyclictest553-21snmpd12:13:323
12361129910099,1cyclictest553-21snmpd10:45:433
12361129910099,1cyclictest553-21snmpd10:34:533
12361129910099,1cyclictest553-21snmpd08:23:493
12361129910098,2cyclictest553-21snmpd12:25:473
12361129910098,2cyclictest553-21snmpd12:16:473
12361129910098,2cyclictest553-21snmpd09:37:573
12361129910097,3cyclictest553-21snmpd07:23:593
123611299100100,0cyclictest553-21snmpd10:35:233
12361099910099,1cyclictest553-21snmpd10:00:462
12361099910099,1cyclictest553-21snmpd07:56:332
12361099910099,1cyclictest553-21snmpd07:40:472
12361099910099,1cyclictest1376953-21cat10:20:142
12361099910098,2cyclictest553-21snmpd09:29:202
1236109991000,99cyclictest0-21swapper/211:18:002
1236109991000,99cyclictest0-21swapper/211:13:382
1236109991000,99cyclictest0-21swapper/209:24:552
1236109991000,99cyclictest0-21swapper/207:26:322
1236109991000,100cyclictest0-21swapper/207:34:172
1236109991000,0cyclictest0-21swapper/210:58:452
12361049910099,1cyclictest553-21snmpd10:29:081
12361049910099,1cyclictest553-21snmpd08:38:161
12361049910099,1cyclictest553-21snmpd08:23:431
12361049910099,1cyclictest0-21swapper/111:46:221
12361049910098,2cyclictest553-21snmpd08:56:431
12361049910097,3cyclictest553-21snmpd11:55:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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