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2026-03-27 - 03:01

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 Fri Mar 27, 2026 00:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36263752132112,15sleep70-21swapper/719:05:237
36268382118103,10sleep20-21swapper/219:07:572
36248602116102,9sleep30-21swapper/319:05:013
3626832211384,9sleep50-21swapper/519:07:525
3626748211399,9sleep60-21swapper/619:06:416
3626752211298,9sleep10-21swapper/119:06:441
3626822210995,9sleep40-21swapper/419:07:434
3626865210590,10sleep00-21swapper/019:08:190
36272229910499,2cyclictest0-21swapper/222:59:192
362722299104102,2cyclictest31-21ksoftirqd/223:49:312
3627229991030,100cyclictest0-21swapper/422:14:444
3627218991030,102cyclictest0-21swapper/121:34:101
3627213991030,100cyclictest3860038-21ssh23:51:040
36272379910299,3cyclictest553-21snmpd00:08:176
36272379910298,4cyclictest3628280-21cat19:10:146
362722299102100,1cyclictest3865092-21users23:55:222
36272139910299,3cyclictest553-21snmpd23:23:570
36272139910299,3cyclictest3839717-21ssh23:33:490
3627213991020,102cyclictest0-21swapper/022:40:140
3627213991020,100cyclictest0-21swapper/019:42:070
3627241991010,100cyclictest0-21swapper/723:39:597
3627241991010,100cyclictest0-21swapper/722:52:117
3627241991010,100cyclictest0-21swapper/721:52:287
36272379910198,3cyclictest553-21snmpd00:35:576
3627237991010,100cyclictest0-21swapper/600:11:236
36272339910199,2cyclictest553-21snmpd00:10:415
36272339910199,1cyclictest553-21snmpd22:52:205
3627233991010,100cyclictest0-21swapper/521:51:365
36272299910199,2cyclictest553-21snmpd22:53:534
3627229991010,100cyclictest0-21swapper/421:09:094
36272279910199,2cyclictest553-21snmpd23:54:513
36272229910199,2cyclictest553-21snmpd23:02:042
36272229910199,2cyclictest141rcu_preempt20:45:122
36272229910199,1cyclictest0-21swapper/221:30:192
36272229910199,0cyclictest141rcu_preempt23:22:592
36272229910195,3cyclictest31-21ksoftirqd/200:34:362
3627222991011,1cyclictest31-21ksoftirqd/221:52:282
362722299101100,1cyclictest553-21snmpd21:29:572
362722299101100,1cyclictest31-21ksoftirqd/200:25:562
3627222991010,100cyclictest3639432-21sed19:30:142
362721899101100,1cyclictest553-21snmpd20:20:491
362721899101100,1cyclictest553-21snmpd20:20:491
3627213991010,101cyclictest0-21swapper/019:24:050
3627241991000,99cyclictest0-21swapper/719:56:377
3627241991000,100cyclictest0-21swapper/723:18:517
3627241991000,100cyclictest0-21swapper/722:25:347
3627241991000,100cyclictest0-21swapper/720:21:387
3627241991000,100cyclictest0-21swapper/720:21:387
36272379910099,1cyclictest553-21snmpd22:37:446
36272379910099,1cyclictest3819690-21cat23:15:156
36272379910099,1cyclictest0-21swapper/623:27:416
36272379910097,3cyclictest553-21snmpd20:36:106
36272379910097,3cyclictest553-21snmpd19:50:046
3627237991000,99cyclictest3689190-21diskmemload23:57:006
3627237991000,99cyclictest0-21swapper/622:20:046
3627237991000,99cyclictest0-21swapper/619:19:596
3627237991000,100cyclictest0-21swapper/620:00:216
36272339910099,1cyclictest570-21ntpd21:46:585
36272339910099,1cyclictest553-21snmpd23:46:225
36272339910099,1cyclictest553-21snmpd23:11:575
36272339910099,1cyclictest553-21snmpd21:07:395
36272339910099,1cyclictest553-21snmpd20:28:135
36272339910099,1cyclictest553-21snmpd20:06:485
36272339910099,1cyclictest553-21snmpd20:04:035
36272339910099,1cyclictest553-21snmpd19:56:125
36272339910099,1cyclictest553-21snmpd19:48:305
36272339910099,1cyclictest553-21snmpd19:17:445
36272339910098,2cyclictest553-21snmpd23:28:595
36272339910098,2cyclictest553-21snmpd22:41:395
3627233991000,99cyclictest3709160-21kworker/u16:222:16:195
3627233991000,99cyclictest0-21swapper/523:59:575
3627233991000,100cyclictest0-21swapper/523:05:345
3627233991000,100cyclictest0-21swapper/522:31:295
3627233991000,100cyclictest0-21swapper/522:10:415
3627233991000,100cyclictest0-21swapper/521:30:145
3627233991000,0cyclictest0-21swapper/500:29:365
36272299910099,1cyclictest553-21snmpd23:20:344
36272299910099,1cyclictest553-21snmpd22:28:534
36272299910099,1cyclictest553-21snmpd21:55:224
36272299910099,1cyclictest553-21snmpd21:24:304
36272299910098,2cyclictest553-21snmpd23:29:114
36272299910098,2cyclictest553-21snmpd21:47:074
3627229991000,99cyclictest0-21swapper/423:35:134
3627229991000,99cyclictest0-21swapper/421:10:064
3627229991000,99cyclictest0-21swapper/419:12:414
3627229991000,100cyclictest0-21swapper/422:40:004
3627229991000,100cyclictest0-21swapper/421:16:474
36272279910099,1cyclictest553-21snmpd23:40:433
36272279910099,1cyclictest553-21snmpd21:04:033
36272279910099,1cyclictest553-21snmpd20:22:373
36272279910099,1cyclictest553-21snmpd20:22:373
36272279910098,2cyclictest553-21snmpd22:49:473
36272279910098,2cyclictest553-21snmpd20:42:403
36272279910098,2cyclictest553-21snmpd00:26:513
36272279910097,3cyclictest553-21snmpd22:09:263
36272229910099,1cyclictest553-21snmpd19:21:272
36272229910099,1cyclictest3675270-21cat20:40:132
36272229910099,1cyclictest31-21ksoftirqd/223:10:182
36272229910098,2cyclictest3881542-21unixbench-2d00:10:192
36272229910098,2cyclictest0-21swapper/223:25:322
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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