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2025-12-12 - 23:03

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, 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 (updated Fri Dec 12, 2025 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
114091810,27ptp4l0-21swapper/019:06:420
1932026251,7sleep30-21swapper/319:09:433
77172610,0sleep10-21swapper/121:50:141
1919526151,6sleep70-21swapper/719:08:027
114091610,6ptp4l0-21swapper/519:05:225
114091600,29ptp4l0-21swapper/119:09:421
1909325635,6sleep60-21swapper/619:06:506
1908025240,7sleep20-21swapper/219:06:382
114091480,5ptp4l0-21swapper/419:08:394
114091320,1ptp4l2309-21irqstats20:50:182
114091310,4ptp4l0-21swapper/521:13:595
114091310,0ptp4l0-21swapper/520:30:115
114091300,0ptp4l0-21swapper/523:39:095
114091300,0ptp4l0-21swapper/419:40:154
114091300,0ptp4l0-21swapper/400:37:004
114091290,2ptp4l0-21swapper/423:05:144
114091290,0ptp4l0-21swapper/623:10:176
114091290,0ptp4l0-21swapper/522:53:175
114091290,0ptp4l0-21swapper/421:54:534
114091290,0ptp4l0-21swapper/222:27:272
114091290,0ptp4l0-21swapper/220:40:132
114091290,0ptp4l0-21swapper/123:22:361
114091280,2ptp4l0-21swapper/521:05:225
114091280,0ptp4l0-21swapper/523:07:375
114091280,0ptp4l0-21swapper/519:25:165
114091270,2ptp4l0-21swapper/119:37:581
114091270,0ptp4l0-21swapper/622:29:116
114091270,0ptp4l0-21swapper/622:13:196
114091270,0ptp4l0-21swapper/600:28:076
114091270,0ptp4l0-21swapper/522:48:325
114091270,0ptp4l0-21swapper/522:37:055
114091270,0ptp4l0-21swapper/023:29:020
114091260,2ptp4l0-21swapper/522:06:325
114091260,2ptp4l0-21swapper/521:39:305
114091260,0ptp4l0-21swapper/621:19:356
114091260,0ptp4l0-21swapper/521:57:445
114091260,0ptp4l0-21swapper/521:44:365
114091260,0ptp4l0-21swapper/520:45:135
114091260,0ptp4l0-21swapper/400:08:494
114091260,0ptp4l0-21swapper/123:12:571
114091260,0ptp4l0-21swapper/121:36:461
114091260,0ptp4l0-21swapper/023:59:120
114091260,0ptp4l0-21swapper/022:31:080
114091250,3ptp4l0-21swapper/100:39:161
114091250,2ptp4l0-21swapper/721:43:177
114091250,2ptp4l0-21swapper/523:32:425
114091250,2ptp4l0-21swapper/400:25:284
114091250,1ptp4l25707-21diskstats22:15:156
114091250,1ptp4l24061-21if_virbr0-nic00:30:184
114091250,0ptp4l0-21swapper/623:41:596
114091250,0ptp4l0-21swapper/621:41:466
114091250,0ptp4l0-21swapper/620:10:006
114091250,0ptp4l0-21swapper/600:24:546
114091250,0ptp4l0-21swapper/600:05:176
114091250,0ptp4l0-21swapper/523:25:525
114091250,0ptp4l0-21swapper/522:10:145
114091250,0ptp4l0-21swapper/519:10:145
114091250,0ptp4l0-21swapper/423:45:154
114091250,0ptp4l0-21swapper/423:31:064
114091250,0ptp4l0-21swapper/422:55:254
114091250,0ptp4l0-21swapper/422:55:244
114091250,0ptp4l0-21swapper/422:27:084
114091250,0ptp4l0-21swapper/421:29:414
114091250,0ptp4l0-21swapper/223:41:232
114091250,0ptp4l0-21swapper/223:01:182
114091250,0ptp4l0-21swapper/223:01:182
114091250,0ptp4l0-21swapper/222:14:162
114091250,0ptp4l0-21swapper/221:57:312
114091250,0ptp4l0-21swapper/220:15:222
114091250,0ptp4l0-21swapper/123:59:521
114091250,0ptp4l0-21swapper/123:27:271
114091250,0ptp4l0-21swapper/121:11:361
114091250,0ptp4l0-21swapper/121:00:201
114091250,0ptp4l0-21swapper/119:20:151
114091250,0ptp4l0-21swapper/000:00:590
114091240,2ptp4l0-21swapper/523:15:035
114091240,2ptp4l0-21swapper/521:25:065
114091240,2ptp4l0-21swapper/121:58:491
114091240,1ptp4l635-21df21:40:141
114091240,1ptp4l28891-21df23:05:130
114091240,1ptp4l27336-21grep19:25:121
114091240,1ptp4l25722-21fw_conntrack22:15:152
114091240,1ptp4l24225-21irqstats00:30:190
114091240,1ptp4l20652-21ssh21:22:240
114091240,1ptp4l10129-21fw_conntrack00:10:165
114091240,0ptp4l10486-21diskmemload21:24:294
114091240,0ptp4l0-21swapper/621:51:256
114091240,0ptp4l0-21swapper/620:25:146
114091240,0ptp4l0-21swapper/523:50:145
114091240,0ptp4l0-21swapper/522:20:135
114091240,0ptp4l0-21swapper/520:10:185
114091240,0ptp4l0-21swapper/519:50:155
114091240,0ptp4l0-21swapper/519:30:205
114091240,0ptp4l0-21swapper/500:01:245
114091240,0ptp4l0-21swapper/422:45:534
114091240,0ptp4l0-21swapper/422:44:184
114091240,0ptp4l0-21swapper/421:14:294
114091240,0ptp4l0-21swapper/420:35:164
114091240,0ptp4l0-21swapper/419:20:204
114091240,0ptp4l0-21swapper/123:18:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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