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2026-06-10 - 06:58

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 Wed Jun 10, 2026 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41529232130109,16sleep20-21swapper/219:07:182
41528362125110,10sleep00-21swapper/019:06:040
41528212120105,10sleep30-21swapper/319:05:513
41528982117103,9sleep40-21swapper/419:06:564
41531032114100,9sleep50-21swapper/519:09:545
4150996211399,9sleep60-21swapper/619:05:066
4152975211298,9sleep70-21swapper/719:08:037
4152978210691,10sleep10-21swapper/119:08:051
41533639910399,3cyclictest553-21snmpd22:45:315
415336099103100,3cyclictest553-21snmpd19:14:064
41533449910399,3cyclictest553-21snmpd19:21:240
415334499103100,3cyclictest95182-21cat22:15:140
4153360991020,0cyclictest0-21swapper/419:21:094
415334499102100,2cyclictest553-21snmpd23:38:330
4153372991010,100cyclictest0-21swapper/723:10:297
4153372991010,0cyclictest0-21swapper/722:37:227
4153372991010,0cyclictest0-21swapper/721:40:027
4153372991010,0cyclictest0-21swapper/721:39:237
41533689910199,2cyclictest553-21snmpd23:55:146
41533689910199,2cyclictest553-21snmpd22:55:586
41533689910199,1cyclictest553-21snmpd20:08:196
41533689910199,1cyclictest553-21snmpd20:08:196
4153368991010,100cyclictest0-21swapper/621:50:146
41533639910199,2cyclictest553-21snmpd22:10:575
41533639910198,3cyclictest553-21snmpd20:39:545
4153363991010,101cyclictest0-21swapper/523:36:185
4153363991010,101cyclictest0-21swapper/522:25:145
41533609910198,3cyclictest553-21snmpd21:11:314
41533609910197,3cyclictest553-21snmpd22:18:094
4153360991010,101cyclictest0-21swapper/422:35:584
4153360991010,101cyclictest0-21swapper/421:09:224
4153360991010,100cyclictest0-21swapper/421:31:464
4153360991010,100cyclictest0-21swapper/419:27:064
41533559910199,2cyclictest553-21snmpd23:31:363
41533559910199,2cyclictest553-21snmpd20:36:573
41533559910199,2cyclictest553-21snmpd00:20:163
41533559910199,2cyclictest553-21snmpd00:20:163
4153351991010,99cyclictest0-21swapper/222:08:362
4153351991010,100cyclictest0-21swapper/220:31:082
415334999101100,1cyclictest553-21snmpd19:41:401
4153349991010,100cyclictest0-21swapper/123:54:451
41533449910199,2cyclictest553-21snmpd23:21:320
41533449910198,3cyclictest553-21snmpd21:34:550
4153344991010,101cyclictest0-21swapper/000:15:250
4153344991010,101cyclictest0-21swapper/000:15:250
4153372991000,99cyclictest0-21swapper/723:25:597
4153372991000,99cyclictest0-21swapper/721:25:167
4153372991000,100cyclictest0-21swapper/720:38:007
41533689910099,1cyclictest553-21snmpd23:34:336
41533689910099,1cyclictest553-21snmpd22:47:496
41533689910099,1cyclictest553-21snmpd22:13:396
41533689910099,1cyclictest553-21snmpd19:20:096
41533689910099,1cyclictest553-21snmpd00:00:346
41533689910099,0cyclictest553-21snmpd21:03:426
41533689910098,2cyclictest553-21snmpd21:25:406
4153368991000,99cyclictest0-21swapper/621:17:166
4153368991000,100cyclictest0-21swapper/622:27:246
4153368991000,0cyclictest0-21swapper/623:02:246
41533639910099,1cyclictest553-21snmpd23:03:205
41533639910099,1cyclictest553-21snmpd22:08:245
41533639910099,1cyclictest553-21snmpd19:58:495
41533639910098,2cyclictest553-21snmpd00:16:555
41533639910098,2cyclictest553-21snmpd00:16:555
4153363991000,100cyclictest0-21swapper/523:14:295
4153363991000,100cyclictest0-21swapper/521:05:155
4153363991000,100cyclictest0-21swapper/519:40:405
41533609910098,2cyclictest553-21snmpd21:23:254
41533609910097,3cyclictest553-21snmpd23:04:474
41533609910096,3cyclictest553-21snmpd22:48:494
4153360991000,99cyclictest0-21swapper/420:17:594
4153360991000,100cyclictest0-21swapper/423:51:094
4153360991000,100cyclictest0-21swapper/423:38:334
4153360991000,100cyclictest0-21swapper/422:12:304
4153360991000,100cyclictest0-21swapper/420:56:544
4153360991000,100cyclictest0-21swapper/420:23:234
41533559910099,1cyclictest553-21snmpd21:00:153
41533559910099,1cyclictest553-21snmpd20:44:003
41533559910099,1cyclictest553-21snmpd19:45:493
41533559910098,2cyclictest553-21snmpd20:05:193
41533559910098,2cyclictest553-21snmpd20:05:193
41533519910099,1cyclictest553-21snmpd20:10:082
41533519910099,1cyclictest553-21snmpd19:46:522
41533519910099,1cyclictest553-21snmpd19:31:482
41533519910099,1cyclictest553-21snmpd19:25:452
41533519910099,1cyclictest553-21snmpd19:18:092
41533519910099,1cyclictest553-21snmpd00:34:292
41533519910099,1cyclictest145420-21cat23:00:142
4153351991000,99cyclictest0-21swapper/223:48:542
4153351991000,99cyclictest0-21swapper/222:11:092
4153351991000,99cyclictest0-21swapper/221:51:112
41533499910099,1cyclictest553-21snmpd19:24:381
41533499910098,2cyclictest553-21snmpd23:26:261
41533499910098,2cyclictest553-21snmpd22:27:091
4153349991000,99cyclictest0-21swapper/123:21:501
4153349991000,99cyclictest0-21swapper/123:16:141
4153349991000,99cyclictest0-21swapper/123:11:471
4153349991000,99cyclictest0-21swapper/119:59:431
4153349991000,100cyclictest0-21swapper/121:26:491
41533449910099,1cyclictest553-21snmpd20:16:410
41533449910099,1cyclictest553-21snmpd00:33:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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