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2026-05-18 - 01:21

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 rackcslot8s.osadl.org (updated Sun May 17, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111391640,15ptp4l0-21swapper/007:05:570
278062590,0sleep50-21swapper/510:08:395
1881915847,7phc2sys0-21swapper/107:08:591
111391560,5ptp4l0-21swapper/407:05:184
2450725432,7sleep50-21swapper/507:07:455
2457325039,6sleep70-21swapper/707:08:367
2446124837,7sleep30-21swapper/307:07:123
2435324837,7sleep60-21swapper/607:05:476
2434924838,6sleep20-21swapper/207:05:422
111391330,0ptp4l0-21swapper/409:25:184
111391320,0ptp4l0-21swapper/407:30:144
111391310,1ptp4l12481-21ssh09:47:221
111391300,0ptp4l0-21swapper/111:55:091
111391300,0ptp4l0-21swapper/111:22:071
111391300,0ptp4l0-21swapper/108:40:171
111391300,0ptp4l0-21swapper/107:53:581
111391300,0ptp4l0-21swapper/012:19:240
111391300,0ptp4l0-21swapper/011:23:230
111391290,0ptp4l0-21swapper/110:21:451
111391290,0ptp4l0-21swapper/012:33:470
111391290,0ptp4l0-21swapper/012:01:590
111391290,0ptp4l0-21swapper/010:37:420
111391290,0ptp4l0-21swapper/009:52:560
111391290,0ptp4l0-21swapper/009:20:430
111391290,0ptp4l0-21swapper/009:10:070
111391280,0ptp4l0-21swapper/510:43:485
111391280,0ptp4l0-21swapper/412:30:204
111391280,0ptp4l0-21swapper/411:30:524
111391280,0ptp4l0-21swapper/411:30:524
111391280,0ptp4l0-21swapper/112:11:341
111391280,0ptp4l0-21swapper/012:37:370
111391280,0ptp4l0-21swapper/012:05:540
111391280,0ptp4l0-21swapper/011:11:480
111391280,0ptp4l0-21swapper/010:15:090
111391280,0ptp4l0-21swapper/009:05:280
111391270,0ptp4l0-21swapper/411:43:314
111391270,0ptp4l0-21swapper/411:23:014
111391270,0ptp4l0-21swapper/411:07:204
111391270,0ptp4l0-21swapper/411:01:294
111391270,0ptp4l0-21swapper/410:16:294
111391270,0ptp4l0-21swapper/409:51:034
111391270,0ptp4l0-21swapper/111:51:301
111391270,0ptp4l0-21swapper/110:48:431
111391270,0ptp4l0-21swapper/109:53:001
111391270,0ptp4l0-21swapper/011:36:510
111391270,0ptp4l0-21swapper/010:35:000
111391270,0ptp4l0-21swapper/010:28:230
111391270,0ptp4l0-21swapper/009:42:220
111391270,0ptp4l0-21swapper/009:27:340
111391270,0ptp4l0-21swapper/009:19:340
111391260,3ptp4l0-21swapper/008:09:130
111391260,1ptp4l21749-21munin-run10:45:014
111391260,0ptp4l0-21swapper/709:14:237
111391260,0ptp4l0-21swapper/512:30:175
111391260,0ptp4l0-21swapper/508:45:135
111391260,0ptp4l0-21swapper/508:45:125
111391260,0ptp4l0-21swapper/411:18:364
111391260,0ptp4l0-21swapper/110:08:561
111391260,0ptp4l0-21swapper/012:25:500
111391260,0ptp4l0-21swapper/011:54:390
111391260,0ptp4l0-21swapper/011:30:180
111391260,0ptp4l0-21swapper/011:30:180
111391260,0ptp4l0-21swapper/011:27:300
111391260,0ptp4l0-21swapper/011:27:300
111391260,0ptp4l0-21swapper/010:40:200
111391260,0ptp4l0-21swapper/010:12:370
111391260,0ptp4l0-21swapper/009:31:210
111391260,0ptp4l0-21swapper/007:15:230
111391250,3ptp4l0-21swapper/509:17:345
111391250,0ptp4l0-21swapper/512:20:195
111391250,0ptp4l0-21swapper/510:38:555
111391250,0ptp4l0-21swapper/510:26:375
111391250,0ptp4l0-21swapper/412:27:354
111391250,0ptp4l0-21swapper/412:17:064
111391250,0ptp4l0-21swapper/412:08:044
111391250,0ptp4l0-21swapper/410:14:424
111391250,0ptp4l0-21swapper/410:00:134
111391250,0ptp4l0-21swapper/409:55:164
111391250,0ptp4l0-21swapper/112:20:121
111391250,0ptp4l0-21swapper/111:00:531
111391250,0ptp4l0-21swapper/109:00:131
111391250,0ptp4l0-21swapper/012:22:220
111391250,0ptp4l0-21swapper/011:58:370
111391250,0ptp4l0-21swapper/010:50:150
111391250,0ptp4l0-21swapper/009:45:190
111391250,0ptp4l0-21swapper/008:10:130
111391240,2ptp4l0-21swapper/111:34:091
111391240,2ptp4l0-21swapper/111:34:091
111391240,1ptp4l8647-21sensors_fan10:25:194
111391240,1ptp4l6561-21ssh11:06:230
111391240,1ptp4l3663-21missed_timers09:35:165
111391240,1ptp4l30877-21memory08:30:154
111391240,1ptp4l2496299cyclictest12:15:151
111391240,0ptp4l11125-21munin-run09:00:001
111391240,0ptp4l0-21swapper/511:48:265
111391240,0ptp4l0-21swapper/510:30:155
111391240,0ptp4l0-21swapper/509:57:345
111391240,0ptp4l0-21swapper/509:41:135
111391240,0ptp4l0-21swapper/411:39:154
111391240,0ptp4l0-21swapper/410:10:004
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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