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2026-05-10 - 21:13

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 10, 2026 12:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111391660,31ptp4l0-21swapper/107:05:161
111391650,6ptp4l0-21swapper/407:05:154
256612620,1sleep341-21ksoftirqd/311:50:133
111391620,30ptp4l0-21swapper/007:05:490
118132600,0sleep60-21swapper/609:20:206
1084026038,6sleep70-21swapper/707:07:437
1097425747,6sleep20-21swapper/207:09:222
20452550,0sleep20-21swapper/210:35:062
324392530,0sleep40-21swapper/412:00:004
227792530,0sleep20-21swapper/207:30:202
111391500,5ptp4l0-21swapper/507:08:345
111391490,0ptp4l28052-21ssh11:53:230
1081024837,7sleep60-21swapper/607:07:186
1060324634,7sleep30-21swapper/307:05:223
111391370,0ptp4l0-21swapper/412:26:284
111391350,1ptp4l26113-21irqrtprio08:50:144
111391330,0ptp4l0-21swapper/510:26:345
111391320,0ptp4l0-21swapper/411:54:314
111391320,0ptp4l0-21swapper/409:11:304
111391320,0ptp4l0-21swapper/407:35:144
111391320,0ptp4l0-21swapper/112:35:201
111391320,0ptp4l0-21swapper/110:35:151
111391320,0ptp4l0-21swapper/010:30:200
111391310,0ptp4l0-21swapper/511:48:135
111391310,0ptp4l0-21swapper/411:41:094
111391310,0ptp4l0-21swapper/411:17:404
111391310,0ptp4l0-21swapper/010:08:240
111391310,0ptp4l0-21swapper/009:55:160
111391300,1ptp4l1061-21snmpd12:17:464
111391300,0ptp4l0-21swapper/408:15:184
111391300,0ptp4l0-21swapper/408:15:184
111391300,0ptp4l0-21swapper/309:45:573
111391300,0ptp4l0-21swapper/011:57:500
111391300,0ptp4l0-21swapper/011:40:160
111391300,0ptp4l0-21swapper/010:28:270
111391300,0ptp4l0-21swapper/009:49:000
111391290,0ptp4l0-21swapper/412:20:324
111391290,0ptp4l0-21swapper/410:51:374
111391290,0ptp4l0-21swapper/410:21:474
111391290,0ptp4l0-21swapper/112:31:461
111391290,0ptp4l0-21swapper/109:51:261
111391290,0ptp4l0-21swapper/011:10:290
111391290,0ptp4l0-21swapper/010:17:540
111391290,0ptp4l0-21swapper/009:34:210
111391290,0ptp4l0-21swapper/009:23:130
111391280,1ptp4l0-21swapper/410:05:214
111391280,0ptp4l0-21swapper/508:20:195
111391280,0ptp4l0-21swapper/508:20:195
111391280,0ptp4l0-21swapper/411:21:394
111391280,0ptp4l0-21swapper/410:59:484
111391280,0ptp4l0-21swapper/410:11:024
111391280,0ptp4l0-21swapper/409:23:064
111391280,0ptp4l0-21swapper/112:06:181
111391280,0ptp4l0-21swapper/110:26:491
111391280,0ptp4l0-21swapper/110:17:021
111391280,0ptp4l0-21swapper/011:48:060
111391280,0ptp4l0-21swapper/011:35:390
111391280,0ptp4l0-21swapper/010:20:100
111391280,0ptp4l0-21swapper/010:04:050
111391280,0ptp4l0-21swapper/009:42:040
111391280,0ptp4l0-21swapper/009:13:240
111391280,0ptp4l0-21swapper/007:45:130
111391270,1ptp4l9-21ksoftirqd/012:00:120
111391270,0ptp4l0-21swapper/508:00:125
111391270,0ptp4l0-21swapper/412:12:254
111391270,0ptp4l0-21swapper/412:08:254
111391270,0ptp4l0-21swapper/411:48:454
111391270,0ptp4l0-21swapper/411:02:364
111391270,0ptp4l0-21swapper/410:16:504
111391270,0ptp4l0-21swapper/409:59:234
111391270,0ptp4l0-21swapper/409:39:344
111391270,0ptp4l0-21swapper/010:48:100
111391270,0ptp4l0-21swapper/010:14:120
111391270,0ptp4l0-21swapper/009:15:070
111391260,3ptp4l0-21swapper/012:07:560
111391260,0ptp4l0-21swapper/512:18:595
111391260,0ptp4l0-21swapper/512:07:185
111391260,0ptp4l0-21swapper/512:02:445
111391260,0ptp4l0-21swapper/511:56:255
111391260,0ptp4l0-21swapper/511:31:525
111391260,0ptp4l0-21swapper/412:37:394
111391260,0ptp4l0-21swapper/411:30:474
111391260,0ptp4l0-21swapper/411:13:444
111391260,0ptp4l0-21swapper/411:05:314
111391260,0ptp4l0-21swapper/409:28:574
111391260,0ptp4l0-21swapper/408:45:204
111391260,0ptp4l0-21swapper/407:20:104
111391260,0ptp4l0-21swapper/310:21:363
111391260,0ptp4l0-21swapper/012:37:590
111391260,0ptp4l0-21swapper/012:27:300
111391260,0ptp4l0-21swapper/012:22:360
111391260,0ptp4l0-21swapper/012:12:220
111391260,0ptp4l0-21swapper/009:05:140
111391250,1ptp4l24577-21df11:05:120
111391250,1ptp4l0-21swapper/110:23:341
111391250,0ptp4l0-21swapper/512:32:035
111391250,0ptp4l0-21swapper/509:10:295
111391250,0ptp4l0-21swapper/409:20:004
111391250,0ptp4l0-21swapper/312:33:393
111391250,0ptp4l0-21swapper/111:56:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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