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2026-08-29 - 12:09

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 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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackbslot8s (updated Sat Aug 29, 2026 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
395326699129127,2cyclictest553-21snmpd22:11:410
39530212121106,10sleep30-21swapper/319:09:423
39528882120106,9sleep00-21swapper/019:07:480
3952754211687,10sleep50-21swapper/519:05:535
3952885211599,10sleep60-21swapper/619:07:466
39527922114100,9sleep70-21swapper/719:06:277
3952975211398,10sleep40-21swapper/419:09:044
3952954211196,10sleep10-21swapper/119:08:451
3950930211095,10sleep20-21swapper/219:05:102
39532909910297,5cyclictest4005176-21kworker/6:123:07:596
395329099102100,1cyclictest4005176-21kworker/6:121:46:336
395328899102100,2cyclictest553-21snmpd22:28:175
39532839910299,3cyclictest553-21snmpd23:39:084
39532839910299,3cyclictest553-21snmpd23:39:074
395328399102100,2cyclictest553-21snmpd19:25:124
39532909910199,2cyclictest4005176-21kworker/6:122:32:066
39532909910199,2cyclictest4005176-21kworker/6:121:40:576
39532909910198,2cyclictest553-21snmpd21:26:226
395329099101100,1cyclictest4005176-21kworker/6:123:59:556
395329099101100,1cyclictest4005176-21kworker/6:123:53:236
395329099101100,1cyclictest4005176-21kworker/6:122:58:226
395329099101100,1cyclictest4005176-21kworker/6:122:53:116
395329099101100,1cyclictest4005176-21kworker/6:122:37:056
395329099101100,1cyclictest4005176-21kworker/6:122:29:596
395329099101100,1cyclictest4005176-21kworker/6:121:57:116
395329099101100,1cyclictest4005176-21kworker/6:121:51:416
395329099101100,1cyclictest4005176-21kworker/6:121:38:126
395329099101100,1cyclictest4005176-21kworker/6:100:39:436
395329099101100,1cyclictest4005176-21kworker/6:100:30:276
395329099101100,1cyclictest4005176-21kworker/6:100:21:256
395329099101100,1cyclictest4005176-21kworker/6:100:17:456
395329099101100,1cyclictest4005176-21kworker/6:100:10:216
395329099101100,1cyclictest3537903-21kworker/6:019:35:156
3953290991010,100cyclictest0-21swapper/620:52:356
39532889910199,2cyclictest553-21snmpd00:36:425
39532889910199,2cyclictest553-21snmpd00:17:125
3953288991010,1cyclictest0-21swapper/521:44:495
39532839910199,2cyclictest553-21snmpd23:44:204
39532839910199,2cyclictest553-21snmpd20:07:494
39532839910199,1cyclictest553-21snmpd22:43:154
39532839910198,3cyclictest553-21snmpd19:57:164
39532799910199,2cyclictest553-21snmpd23:56:223
39532799910199,2cyclictest553-21snmpd23:24:193
39532799910199,2cyclictest553-21snmpd21:56:373
39532799910198,3cyclictest553-21snmpd23:26:193
3953274991010,100cyclictest4070807-21kworker/2:022:46:582
3953274991010,0cyclictest0-21swapper/221:38:312
39532719910199,2cyclictest553-21snmpd23:10:031
39532719910199,2cyclictest553-21snmpd22:47:511
39532719910199,1cyclictest553-21snmpd21:41:371
3953271991010,101cyclictest0-21swapper/120:35:051
39532669910199,2cyclictest553-21snmpd20:40:440
39532669910199,2cyclictest4033473-21cat21:25:150
3953266991010,100cyclictest0-21swapper/019:58:010
3953294991000,99cyclictest0-21swapper/723:26:197
39532909910099,1cyclictest553-21snmpd19:20:416
39532909910099,1cyclictest4005176-21kworker/6:123:45:116
39532909910099,1cyclictest4005176-21kworker/6:123:41:016
39532909910099,1cyclictest4005176-21kworker/6:123:35:136
39532909910099,1cyclictest4005176-21kworker/6:123:35:136
39532909910099,1cyclictest4005176-21kworker/6:123:30:156
39532909910099,1cyclictest4005176-21kworker/6:123:30:156
39532909910099,1cyclictest4005176-21kworker/6:123:25:136
39532909910099,1cyclictest4005176-21kworker/6:123:15:136
39532909910099,1cyclictest4005176-21kworker/6:123:10:056
39532909910099,1cyclictest4005176-21kworker/6:123:00:076
39532909910099,1cyclictest4005176-21kworker/6:122:45:036
39532909910099,1cyclictest4005176-21kworker/6:122:40:196
39532909910099,1cyclictest4005176-21kworker/6:122:20:116
39532909910099,1cyclictest4005176-21kworker/6:122:15:076
39532909910099,1cyclictest4005176-21kworker/6:122:10:496
39532909910099,1cyclictest4005176-21kworker/6:122:05:356
39532909910099,1cyclictest4005176-21kworker/6:122:00:036
39532909910099,1cyclictest4005176-21kworker/6:121:30:536
39532909910099,1cyclictest4005176-21kworker/6:121:21:056
39532909910099,1cyclictest4005176-21kworker/6:121:15:316
39532909910099,1cyclictest4005176-21kworker/6:121:10:566
39532909910099,1cyclictest4005176-21kworker/6:121:05:136
39532909910099,1cyclictest4005176-21kworker/6:121:00:116
39532909910099,1cyclictest4005176-21kworker/6:120:55:236
39532909910099,1cyclictest4005176-21kworker/6:100:25:006
39532909910099,1cyclictest4005176-21kworker/6:100:06:236
39532909910099,1cyclictest4005176-21kworker/6:100:00:436
39532909910099,1cyclictest3537903-21kworker/6:020:45:126
39532909910099,1cyclictest3537903-21kworker/6:020:10:116
39532909910099,1cyclictest3537903-21kworker/6:019:50:176
39532909910099,1cyclictest3537903-21kworker/6:019:40:196
39532909910099,1cyclictest3537903-21kworker/6:019:31:236
39532909910099,1cyclictest3537903-21kworker/6:019:15:136
39532909910099,1cyclictest3537903-21kworker/6:019:15:136
39532909910098,1cyclictest4005176-21kworker/6:123:20:066
39532909910098,1cyclictest3537903-21kworker/6:020:00:016
3953290991000,99cyclictest0-21swapper/620:37:446
3953290991000,100cyclictest0-21swapper/620:30:086
39532889910099,1cyclictest553-21snmpd23:43:385
39532889910099,1cyclictest553-21snmpd22:30:095
39532889910098,2cyclictest553-21snmpd21:27:255
3953288991000,99cyclictest0-21swapper/520:28:085
3953288991000,100cyclictest0-21swapper/523:59:385
3953288991000,100cyclictest0-21swapper/519:45:145
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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