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2026-06-01 - 00:38

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 Sun May 31, 2026 12:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36138312122108,9sleep30-21swapper/307:09:583
36125362122110,7sleep20-21swapper/207:05:162
36117132118103,9sleep50-21swapper/507:05:035
36136842117103,9sleep00-21swapper/007:07:560
36136472116102,9sleep10-21swapper/107:07:251
3613625211586,9sleep60-21swapper/607:07:056
3613596210995,9sleep40-21swapper/407:06:394
3613525210995,9sleep70-21swapper/707:05:377
3614244991030,103cyclictest0-21swapper/508:20:145
3614244991020,102cyclictest0-21swapper/510:30:145
3614244991020,101cyclictest0-21swapper/512:04:035
3614244991020,100cyclictest0-21swapper/510:42:045
3614244991020,100cyclictest0-21swapper/508:57:575
3614244991020,100cyclictest0-21swapper/507:32:475
3614240991020,0cyclictest0-21swapper/410:58:104
36142339910299,3cyclictest553-21snmpd11:31:263
36142339910299,3cyclictest553-21snmpd10:12:423
36142339910299,3cyclictest553-21snmpd07:18:393
36142339910299,2cyclictest605-21lldpd07:14:263
361423199102100,2cyclictest553-21snmpd10:22:392
3614225991020,100cyclictest0-21swapper/109:28:551
361422099102100,2cyclictest553-21snmpd12:36:390
3614255991010,100cyclictest0-21swapper/712:20:467
3614255991010,100cyclictest0-21swapper/711:19:537
3614255991010,100cyclictest0-21swapper/710:15:247
36142499910199,2cyclictest553-21snmpd11:15:446
36142499910199,2cyclictest553-21snmpd10:43:116
361424999101100,1cyclictest3737814-21kworker/6:210:51:386
36142449910199,2cyclictest553-21snmpd12:35:205
36142449910199,2cyclictest553-21snmpd11:50:195
36142449910199,2cyclictest553-21snmpd09:51:335
36142449910199,2cyclictest553-21snmpd09:51:335
3614244991010,101cyclictest0-21swapper/511:25:155
3614244991010,101cyclictest0-21swapper/511:16:475
3614244991010,0cyclictest0-21swapper/510:08:445
3614244991010,0cyclictest0-21swapper/508:28:595
361424099101100,1cyclictest553-21snmpd08:10:194
3614240991010,100cyclictest0-21swapper/411:29:274
3614240991010,100cyclictest0-21swapper/408:18:044
36142339910199,2cyclictest553-21snmpd10:50:343
36142339910199,2cyclictest553-21snmpd09:54:003
36142339910199,2cyclictest553-21snmpd09:53:593
36142339910199,2cyclictest553-21snmpd08:14:463
36142339910198,3cyclictest553-21snmpd10:46:463
36142339910198,3cyclictest553-21snmpd09:55:413
36142339910198,3cyclictest553-21snmpd09:41:493
36142339910198,3cyclictest553-21snmpd08:53:483
36142339910198,2cyclictest553-21snmpd11:44:183
36142339910198,2cyclictest553-21snmpd09:31:133
361423399101100,1cyclictest553-21snmpd09:27:223
361423399101100,1cyclictest553-21snmpd09:14:153
36142319910199,2cyclictest3694361-21cat09:25:132
3614231991010,100cyclictest0-21swapper/211:50:002
36142259910198,2cyclictest553-21snmpd09:38:131
361422099101100,1cyclictest553-21snmpd10:57:430
3614255991000,99cyclictest0-21swapper/710:41:497
3614255991000,99cyclictest0-21swapper/710:22:467
3614255991000,99cyclictest0-21swapper/710:04:417
3614255991000,99cyclictest0-21swapper/708:44:427
3614255991000,98cyclictest0-21swapper/709:40:167
3614255991000,100cyclictest0-21swapper/711:04:287
36142499910099,1cyclictest553-21snmpd12:36:296
36142499910099,1cyclictest553-21snmpd12:12:406
36142499910099,1cyclictest553-21snmpd11:50:246
36142499910099,1cyclictest553-21snmpd11:49:006
36142499910099,1cyclictest553-21snmpd09:37:226
36142499910099,1cyclictest553-21snmpd08:32:206
36142499910099,1cyclictest553-21snmpd07:39:456
36142499910099,1cyclictest3737814-21kworker/6:211:35:146
36142499910099,1cyclictest3737814-21kworker/6:211:28:246
36142499910099,1cyclictest3737814-21kworker/6:211:05:176
36142499910099,1cyclictest3737814-21kworker/6:210:34:126
36142499910099,1cyclictest3668530-21kworker/6:110:00:426
36142499910099,1cyclictest3668530-21kworker/6:109:53:076
36142499910099,1cyclictest3668530-21kworker/6:109:53:076
36142499910099,1cyclictest3668530-21kworker/6:109:27:436
36142499910099,1cyclictest3668530-21kworker/6:109:10:186
3614249991000,99cyclictest0-21swapper/610:19:556
3614249991000,99cyclictest0-21swapper/609:34:476
3614249991000,99cyclictest0-21swapper/609:00:136
3614249991000,99cyclictest0-21swapper/607:14:386
3614249991000,100cyclictest0-21swapper/609:15:146
36142449910099,1cyclictest553-21snmpd12:22:025
36142449910099,1cyclictest553-21snmpd09:55:595
36142449910099,1cyclictest553-21snmpd09:26:325
36142449910099,1cyclictest553-21snmpd08:02:465
36142449910099,1cyclictest553-21snmpd07:25:535
3614244991000,99cyclictest0-21swapper/512:26:105
3614244991000,99cyclictest0-21swapper/510:11:575
3614244991000,100cyclictest0-21swapper/508:35:395
3614244991000,100cyclictest0-21swapper/507:15:095
3614244991000,0cyclictest0-21swapper/508:49:535
36142409910099,1cyclictest553-21snmpd10:38:134
36142409910099,1cyclictest553-21snmpd07:42:224
36142409910099,1cyclictest553-21snmpd07:37:494
36142409910099,1cyclictest553-21snmpd07:27:024
36142409910099,1cyclictest3905689-21cat12:35:164
36142409910099,1cyclictest3694346-21cat09:25:144
36142409910098,1cyclictest553-21snmpd11:57:184
36142409910098,1cyclictest553-21snmpd10:51:104
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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