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2026-06-09 - 19:59

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 Tue Jun 09, 2026 12:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111391670,30ptp4l0-21swapper/007:08:540
111391650,5ptp4l0-21swapper/407:09:344
111391630,28ptp4l0-21swapper/207:08:522
111391600,29ptp4l0-21swapper/107:06:251
2212325343,6sleep70-21swapper/707:08:287
2191324837,7sleep50-21swapper/507:05:465
2195524735,7sleep30-21swapper/307:06:163
2191424735,7sleep60-21swapper/607:05:476
111391370,0ptp4l0-21swapper/707:40:127
111391330,4ptp4l0-21swapper/410:07:164
111391320,0ptp4l0-21swapper/408:45:164
111391320,0ptp4l0-21swapper/408:45:164
111391320,0ptp4l0-21swapper/408:35:114
111391310,1ptp4l6406-21ssh10:26:030
111391310,0ptp4l21683-21ssh12:15:196
111391310,0ptp4l0-21swapper/209:58:252
111391300,0ptp4l13052-21if_virbr011:20:154
111391300,0ptp4l0-21swapper/511:00:155
111391300,0ptp4l0-21swapper/410:32:534
111391300,0ptp4l0-21swapper/407:10:124
111391300,0ptp4l0-21swapper/110:55:131
111391300,0ptp4l0-21swapper/010:10:110
111391290,1ptp4l25060-21ssh11:35:200
111391290,0ptp4l0-21swapper/512:19:325
111391290,0ptp4l0-21swapper/410:35:594
111391290,0ptp4l0-21swapper/407:45:004
111391290,0ptp4l0-21swapper/012:04:590
111391290,0ptp4l0-21swapper/010:15:120
111391280,0ptp4l0-21swapper/709:46:277
111391280,0ptp4l0-21swapper/412:24:204
111391280,0ptp4l0-21swapper/412:10:324
111391280,0ptp4l0-21swapper/411:30:174
111391280,0ptp4l0-21swapper/411:14:164
111391280,0ptp4l0-21swapper/410:12:154
111391280,0ptp4l0-21swapper/012:25:220
111391280,0ptp4l0-21swapper/012:07:500
111391280,0ptp4l0-21swapper/011:20:300
111391280,0ptp4l0-21swapper/010:59:120
111391280,0ptp4l0-21swapper/009:21:120
22560992715,11cyclictest0-21swapper/709:30:177
111391270,3ptp4l0-21swapper/111:55:551
111391270,0ptp4l0-21swapper/510:53:595
111391270,0ptp4l0-21swapper/508:36:295
111391270,0ptp4l0-21swapper/411:18:254
111391270,0ptp4l0-21swapper/410:59:204
111391270,0ptp4l0-21swapper/410:53:424
111391270,0ptp4l0-21swapper/410:48:264
111391270,0ptp4l0-21swapper/410:29:294
111391270,0ptp4l0-21swapper/409:57:384
111391270,0ptp4l0-21swapper/011:41:180
111391260,3ptp4l0-21swapper/510:48:145
111391260,0ptp4l0-21swapper/612:38:046
111391260,0ptp4l0-21swapper/510:55:195
111391260,0ptp4l0-21swapper/507:59:015
111391260,0ptp4l0-21swapper/411:47:114
111391260,0ptp4l0-21swapper/410:44:304
111391260,0ptp4l0-21swapper/409:27:194
111391260,0ptp4l0-21swapper/407:15:154
111391260,0ptp4l0-21swapper/112:22:081
111391260,0ptp4l0-21swapper/112:16:491
111391260,0ptp4l0-21swapper/111:45:251
111391260,0ptp4l0-21swapper/108:30:151
111391260,0ptp4l0-21swapper/012:39:010
111391260,0ptp4l0-21swapper/011:30:030
111391260,0ptp4l0-21swapper/011:25:560
111391260,0ptp4l0-21swapper/011:25:560
111391260,0ptp4l0-21swapper/011:15:010
111391260,0ptp4l0-21swapper/011:06:580
111391260,0ptp4l0-21swapper/010:50:200
111391260,0ptp4l0-21swapper/010:46:320
111391260,0ptp4l0-21swapper/010:31:460
111391260,0ptp4l0-21swapper/009:45:540
111391260,0ptp4l0-21swapper/009:28:000
111391260,0ptp4l0-21swapper/009:12:480
111391260,0ptp4l0-21swapper/007:20:140
2254699250,5cyclictest0-21swapper/507:13:415
111391250,0ptp4l481ktimersoftd/409:19:164
111391250,0ptp4l0-21swapper/610:47:276
111391250,0ptp4l0-21swapper/511:59:115
111391250,0ptp4l0-21swapper/511:39:145
111391250,0ptp4l0-21swapper/510:08:005
111391250,0ptp4l0-21swapper/411:01:074
111391250,0ptp4l0-21swapper/410:22:444
111391250,0ptp4l0-21swapper/409:14:264
111391250,0ptp4l0-21swapper/408:54:474
111391250,0ptp4l0-21swapper/408:54:474
111391250,0ptp4l0-21swapper/408:20:114
111391250,0ptp4l0-21swapper/407:45:194
111391250,0ptp4l0-21swapper/309:31:463
111391250,0ptp4l0-21swapper/111:24:541
111391250,0ptp4l0-21swapper/110:01:141
111391250,0ptp4l0-21swapper/109:36:501
111391250,0ptp4l0-21swapper/012:21:420
111391250,0ptp4l0-21swapper/012:11:430
111391250,0ptp4l0-21swapper/010:39:550
111391250,0ptp4l0-21swapper/009:56:320
111391250,0ptp4l0-21swapper/009:15:260
111391250,0ptp4l0-21swapper/008:50:190
111391250,0ptp4l0-21swapper/008:50:190
111391250,0ptp4l0-21swapper/007:15:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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