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2026-04-10 - 15:09

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 Fri Apr 10, 2026 12:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18582622122109,9sleep00-21swapper/007:09:230
18581332121106,10sleep10-21swapper/107:07:311
18581012118104,9sleep70-21swapper/707:07:067
185854199117116,1cyclictest0-21swapper/210:14:312
18580322117102,10sleep30-21swapper/307:06:053
1858100211686,10sleep60-21swapper/607:07:056
18580152116102,9sleep40-21swapper/407:05:504
1856194211485,9sleep20-21swapper/207:05:082
1858025211298,9sleep50-21swapper/507:06:005
185853399103100,3cyclictest553-21snmpd11:42:200
1858561991020,100cyclictest0-21swapper/711:18:147
1858533991020,102cyclictest0-21swapper/011:20:130
1858533991020,101cyclictest0-21swapper/008:54:070
1858533991020,0cyclictest0-21swapper/010:48:420
1858561991010,0cyclictest0-21swapper/711:13:087
1858561991010,0cyclictest0-21swapper/710:50:497
18585559910199,2cyclictest553-21snmpd10:57:325
185855599101100,1cyclictest553-21snmpd09:38:205
1858555991010,100cyclictest0-21swapper/511:46:185
18585509910199,2cyclictest553-21snmpd11:19:504
18585469910199,2cyclictest553-21snmpd11:53:483
185854699101100,1cyclictest553-21snmpd10:03:563
18585419910199,2cyclictest553-21snmpd11:07:112
1858541991010,100cyclictest0-21swapper/210:35:282
1858541991010,100cyclictest0-21swapper/207:13:282
185853799101100,1cyclictest553-21snmpd11:34:301
18585339910199,2cyclictest0-21swapper/011:01:590
1858533991010,101cyclictest0-21swapper/012:26:080
1858533991010,101cyclictest0-21swapper/011:36:090
1858533991010,100cyclictest0-21swapper/012:16:490
1858533991010,100cyclictest0-21swapper/012:16:480
1858533991010,0cyclictest0-21swapper/007:47:200
18585619910099,1cyclictest0-21swapper/709:15:017
1858561991000,99cyclictest0-21swapper/711:27:307
1858561991000,99cyclictest0-21swapper/711:20:537
1858561991000,99cyclictest0-21swapper/709:29:527
1858561991000,100cyclictest0-21swapper/712:15:577
1858561991000,100cyclictest0-21swapper/712:15:577
1858561991000,100cyclictest0-21swapper/709:20:067
1858561991000,100cyclictest0-21swapper/708:15:387
1858561991000,100cyclictest0-21swapper/707:38:077
1858561991000,100cyclictest0-21swapper/707:30:137
18585579910099,1cyclictest553-21snmpd12:25:416
18585579910099,1cyclictest553-21snmpd10:40:576
18585579910099,1cyclictest553-21snmpd07:32:136
18585579910098,1cyclictest553-21snmpd08:29:476
1858557991000,99cyclictest0-21swapper/610:30:406
1858557991000,99cyclictest0-21swapper/609:51:196
1858557991000,99cyclictest0-21swapper/609:26:466
1858557991000,99cyclictest0-21swapper/607:10:306
1858557991000,100cyclictest0-21swapper/610:46:346
18585559910099,1cyclictest553-21snmpd08:20:005
18585559910099,1cyclictest553-21snmpd07:48:325
18585559910099,1cyclictest553-21snmpd07:42:245
18585559910098,2cyclictest553-21snmpd12:22:235
18585559910098,2cyclictest553-21snmpd12:18:535
18585559910098,2cyclictest553-21snmpd12:18:535
18585559910098,2cyclictest553-21snmpd10:26:065
18585559910098,2cyclictest553-21snmpd09:24:015
1858555991000,99cyclictest0-21swapper/510:36:425
1858555991000,100cyclictest0-21swapper/508:54:275
1858555991000,0cyclictest0-21swapper/511:52:435
18585509910099,1cyclictest553-21snmpd09:10:484
18585509910099,1cyclictest1994039-21cat10:15:134
18585509910098,2cyclictest553-21snmpd12:30:224
1858550991000,99cyclictest0-21swapper/411:06:144
1858550991000,100cyclictest0-21swapper/411:11:204
1858550991000,100cyclictest0-21swapper/410:20:574
1858550991000,100cyclictest0-21swapper/409:57:004
1858550991000,100cyclictest0-21swapper/409:51:084
1858550991000,100cyclictest0-21swapper/407:16:164
185854699100100,0cyclictest553-21snmpd10:30:333
18585419910099,1cyclictest553-21snmpd09:41:532
18585419910090,7cyclictest31-21ksoftirqd/209:48:012
1858541991000,99cyclictest0-21swapper/211:11:252
1858541991000,99cyclictest0-21swapper/210:42:372
1858541991000,99cyclictest0-21swapper/209:50:172
1858541991000,100cyclictest0-21swapper/211:53:062
18585379910099,1cyclictest553-21snmpd12:26:041
18585379910099,1cyclictest553-21snmpd10:11:241
18585379910099,1cyclictest553-21snmpd08:50:541
18585379910099,1cyclictest553-21snmpd08:31:391
18585379910099,1cyclictest553-21snmpd07:27:391
18585379910099,1cyclictest1905748-21fw_conntrack08:40:111
18585379910098,1cyclictest553-21snmpd12:33:441
18585379910098,1cyclictest553-21snmpd09:07:391
1858537991000,99cyclictest0-21swapper/108:18:081
1858537991000,100cyclictest0-21swapper/112:19:381
1858537991000,100cyclictest0-21swapper/112:19:371
1858537991000,100cyclictest0-21swapper/109:57:141
18585339910099,1cyclictest553-21snmpd12:09:120
18585339910099,1cyclictest553-21snmpd08:49:210
18585339910099,1cyclictest1900899-21cat08:30:140
18585339910097,3cyclictest553-21snmpd10:28:420
1858533991000,99cyclictest0-21swapper/010:05:180
1858533991000,99cyclictest0-21swapper/008:03:290
1858561999998,1cyclictest0-21swapper/709:55:037
185856199990,99cyclictest0-21swapper/710:06:097
185856199990,99cyclictest0-21swapper/709:00:187
185856199990,99cyclictest0-21swapper/708:27:067
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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