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2025-12-25 - 01:00

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 Dec 24, 2025 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6460522134119,9sleep40-21swapper/407:06:554
6460902133103,10sleep30-21swapper/307:07:263
6441562127100,22sleep10-21swapper/107:05:071
6461122126110,10sleep70-21swapper/707:07:467
646119212494,9sleep50-21swapper/507:07:525
6460452124109,10sleep60-21swapper/607:06:496
6460982123109,9sleep20-21swapper/207:07:322
6462552117103,9sleep00-21swapper/007:09:470
64651299114112,1cyclictest0-21swapper/211:06:312
646532991020,100cyclictest0-21swapper/708:42:237
6465289910299,3cyclictest556-21snmpd12:13:176
6465289910299,2cyclictest556-21snmpd10:34:306
646528991020,99cyclictest0-21swapper/610:11:446
646528991020,102cyclictest0-21swapper/609:40:076
646528991020,100cyclictest0-21swapper/607:59:276
64651799102100,2cyclictest556-21snmpd10:55:483
646532991010,101cyclictest0-21swapper/710:58:397
646532991010,101cyclictest0-21swapper/710:40:337
646532991010,0cyclictest0-21swapper/711:45:537
6465289910199,1cyclictest556-21snmpd10:09:266
64652499101100,1cyclictest556-21snmpd08:54:535
64652499101100,1cyclictest0-21swapper/507:11:055
6465219910199,1cyclictest556-21snmpd08:51:474
6465179910199,2cyclictest556-21snmpd10:41:213
6465179910198,3cyclictest556-21snmpd10:17:553
6465179910198,2cyclictest556-21snmpd11:30:583
6465179910198,2cyclictest556-21snmpd11:07:133
64651799101100,1cyclictest556-21snmpd12:11:453
646512991010,0cyclictest0-21swapper/212:16:212
6465089910199,2cyclictest556-21snmpd12:34:091
646508991010,100cyclictest0-21swapper/109:21:121
6465039910199,2cyclictest556-21snmpd09:58:580
6465039910199,1cyclictest556-21snmpd12:26:360
646503991010,100cyclictest0-21swapper/011:35:530
646532991000,99cyclictest0-21swapper/711:56:537
646532991000,99cyclictest0-21swapper/711:37:477
646532991000,99cyclictest0-21swapper/709:27:157
646532991000,99cyclictest0-21swapper/707:47:487
646532991000,100cyclictest0-21swapper/709:39:047
6465289910099,1cyclictest673439-21cat08:00:156
6465289910099,1cyclictest556-21snmpd12:28:186
6465289910099,1cyclictest556-21snmpd10:47:456
6465289910099,1cyclictest556-21snmpd09:48:346
6465289910099,1cyclictest556-21snmpd09:28:126
6465289910099,1cyclictest556-21snmpd08:27:346
6465289910096,4cyclictest556-21snmpd11:59:086
64652899100100,0cyclictest556-21snmpd08:38:056
646528991000,99cyclictest0-21swapper/607:13:176
646528991000,100cyclictest0-21swapper/610:35:516
646528991000,100cyclictest0-21swapper/610:35:506
646528991000,100cyclictest0-21swapper/610:00:176
646528991000,100cyclictest0-21swapper/609:39:076
6465249910099,1cyclictest556-21snmpd09:13:185
6465249910099,1cyclictest556-21snmpd08:42:255
646524991000,99cyclictest0-21swapper/510:40:155
646524991000,99cyclictest0-21swapper/509:26:455
6465219910099,1cyclictest556-21snmpd12:02:344
6465219910099,1cyclictest556-21snmpd10:53:064
6465219910099,1cyclictest556-21snmpd10:33:394
6465219910099,1cyclictest556-21snmpd10:27:294
6465219910099,1cyclictest556-21snmpd09:17:454
6465219910099,1cyclictest556-21snmpd08:30:224
6465219910099,1cyclictest556-21snmpd08:22:344
6465219910099,1cyclictest556-21snmpd08:15:134
646521991000,99cyclictest0-21swapper/412:21:424
646521991000,99cyclictest0-21swapper/409:35:194
646521991000,99cyclictest0-21swapper/408:27:014
646521991000,99cyclictest0-21swapper/408:04:344
646521991000,100cyclictest0-21swapper/407:28:504
6465179910099,1cyclictest556-21snmpd12:06:393
6465179910099,1cyclictest556-21snmpd10:54:363
6465179910099,1cyclictest556-21snmpd09:08:393
6465179910099,1cyclictest556-21snmpd07:59:183
6465179910099,1cyclictest556-21snmpd07:44:573
6465179910098,2cyclictest556-21snmpd11:57:173
6465179910098,2cyclictest556-21snmpd11:37:173
6465179910098,2cyclictest556-21snmpd10:26:113
6465179910098,1cyclictest556-21snmpd12:31:143
6465179910097,3cyclictest556-21snmpd07:47:063
6465129910099,1cyclictest735097-21cat09:35:192
6465129910099,1cyclictest655806-21cat07:25:152
6465129910099,1cyclictest556-21snmpd11:03:282
6465129910099,1cyclictest556-21snmpd10:57:502
6465129910099,1cyclictest0-21swapper/207:50:122
6465129910099,0cyclictest556-21snmpd08:46:202
646512991000,99cyclictest707817-21diskmemload11:36:312
646512991000,99cyclictest0-21swapper/212:21:362
646512991000,99cyclictest0-21swapper/209:53:372
646512991000,99cyclictest0-21swapper/208:54:352
646512991000,99cyclictest0-21swapper/208:31:072
646512991000,99cyclictest0-21swapper/208:29:222
646512991000,99cyclictest0-21swapper/208:18:192
646512991000,100cyclictest0-21swapper/212:26:082
646512991000,100cyclictest0-21swapper/212:01:572
646512991000,100cyclictest0-21swapper/210:12:112
6465089910099,1cyclictest556-21snmpd12:23:211
6465089910099,1cyclictest556-21snmpd12:14:271
6465089910099,1cyclictest556-21snmpd12:05:061
6465089910099,1cyclictest556-21snmpd11:56:381
6465089910099,1cyclictest556-21snmpd09:29:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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