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2026-06-05 - 03:28

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 Fri Jun 05, 2026 00:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34128032122107,9sleep70-21swapper/719:07:237
34127642119105,9sleep40-21swapper/419:06:474
34126862118103,10sleep20-21swapper/219:05:412
34127172115100,10sleep60-21swapper/619:06:096
3412712211499,10sleep10-21swapper/119:06:041
3410868211399,9sleep30-21swapper/319:05:023
3412720211197,9sleep00-21swapper/019:06:110
3412765210995,9sleep50-21swapper/519:06:485
341323699104103,1cyclictest0-21swapper/621:50:146
34132319910299,1cyclictest553-21snmpd20:05:365
34132179910299,3cyclictest3660375-21cat23:55:151
3413217991020,102cyclictest0-21swapper/121:42:001
3413217991020,100cyclictest0-21swapper/120:22:101
3413240991010,101cyclictest0-21swapper/723:49:077
3413240991010,100cyclictest0-21swapper/722:34:477
3413240991010,100cyclictest0-21swapper/721:26:037
3413240991010,0cyclictest0-21swapper/722:08:077
341323699101100,1cyclictest553-21snmpd23:08:216
3413236991010,100cyclictest0-21swapper/622:37:176
3413236991010,100cyclictest0-21swapper/621:21:426
3413236991010,100cyclictest0-21swapper/621:17:366
34132319910199,2cyclictest553-21snmpd23:50:075
34132319910199,2cyclictest553-21snmpd22:55:485
3413231991010,100cyclictest0-21swapper/523:30:565
34132239910199,2cyclictest553-21snmpd22:56:543
34132239910199,2cyclictest553-21snmpd20:50:383
34132239910199,2cyclictest553-21snmpd00:40:003
34132219910199,2cyclictest553-21snmpd00:08:112
34132219910198,3cyclictest553-21snmpd23:02:032
34132179910199,2cyclictest553-21snmpd21:08:081
34132179910198,3cyclictest553-21snmpd00:34:211
3413217991010,100cyclictest0-21swapper/121:26:511
3413217991010,100cyclictest0-21swapper/121:02:561
34132129910199,2cyclictest553-21snmpd23:29:100
3413240991000,99cyclictest0-21swapper/722:45:487
3413240991000,99cyclictest0-21swapper/720:49:027
3413240991000,99cyclictest0-21swapper/720:18:317
3413240991000,99cyclictest0-21swapper/719:11:087
3413240991000,100cyclictest0-21swapper/723:07:037
3413240991000,100cyclictest0-21swapper/719:32:117
3413240991000,100cyclictest0-21swapper/700:24:577
34132369910099,1cyclictest553-21snmpd23:55:596
34132369910099,1cyclictest3538040-21cat22:05:156
3413236991000,99cyclictest0-21swapper/622:56:306
3413236991000,99cyclictest0-21swapper/622:04:106
3413236991000,99cyclictest0-21swapper/621:46:426
3413236991000,99cyclictest0-21swapper/619:54:016
3413236991000,98cyclictest0-21swapper/622:19:476
3413236991000,100cyclictest0-21swapper/623:44:466
3413236991000,100cyclictest0-21swapper/622:23:576
3413236991000,100cyclictest0-21swapper/600:03:146
34132319910099,1cyclictest553-21snmpd21:59:565
34132319910099,1cyclictest553-21snmpd20:29:285
34132319910099,1cyclictest553-21snmpd20:29:285
34132319910099,1cyclictest553-21snmpd19:51:465
34132319910099,1cyclictest553-21snmpd00:00:295
34132319910099,1cyclictest3427865-21cat19:35:145
34132319910098,2cyclictest553-21snmpd21:41:275
34132319910098,2cyclictest553-21snmpd21:12:085
34132319910098,2cyclictest553-21snmpd20:21:045
3413231991000,100cyclictest0-21swapper/523:42:495
34132289910099,1cyclictest553-21snmpd20:47:144
34132289910099,1cyclictest553-21snmpd20:07:124
34132289910099,1cyclictest553-21snmpd19:58:334
34132289910098,2cyclictest553-21snmpd00:10:414
3413228991000,99cyclictest0-21swapper/423:09:314
3413228991000,99cyclictest0-21swapper/421:50:404
3413228991000,99cyclictest0-21swapper/420:15:434
3413228991000,99cyclictest0-21swapper/419:45:284
3413228991000,99cyclictest0-21swapper/419:34:204
3413228991000,99cyclictest0-21swapper/400:26:514
3413228991000,100cyclictest0-21swapper/423:03:214
34132239910099,1cyclictest553-21snmpd22:49:383
34132239910099,1cyclictest553-21snmpd21:47:243
34132239910099,1cyclictest553-21snmpd19:46:283
34132239910099,1cyclictest553-21snmpd00:31:573
34132239910098,2cyclictest553-21snmpd19:38:483
34132219910099,1cyclictest553-21snmpd22:31:502
34132219910099,1cyclictest553-21snmpd22:21:592
34132219910098,1cyclictest553-21snmpd19:58:242
34132219910098,1cyclictest3543554-21cat22:10:152
341322199100100,0cyclictest0-21swapper/200:27:242
3413221991000,99cyclictest0-21swapper/221:36:572
3413221991000,99cyclictest0-21swapper/220:35:312
3413221991000,99cyclictest0-21swapper/220:26:442
3413221991000,99cyclictest0-21swapper/220:26:432
3413221991000,99cyclictest0-21swapper/220:10:132
3413221991000,100cyclictest0-21swapper/223:25:142
3413221991000,100cyclictest0-21swapper/200:38:182
3413221991000,100cyclictest0-21swapper/200:04:412
34132179910099,1cyclictest3621618-21cat23:20:151
3413217991000,99cyclictest0-21swapper/122:30:081
3413217991000,100cyclictest0-21swapper/122:54:541
3413217991000,100cyclictest0-21swapper/122:05:401
34132129910099,1cyclictest553-21snmpd23:40:160
34132129910099,1cyclictest553-21snmpd21:03:380
34132129910099,1cyclictest553-21snmpd20:29:230
34132129910099,1cyclictest553-21snmpd20:29:220
34132129910099,1cyclictest553-21snmpd19:55:000
34132129910098,2cyclictest553-21snmpd23:15:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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