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2026-06-30 - 19:31

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 30, 2026 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111391630,5ptp4l0-21swapper/207:07:442
111391630,5ptp4l0-21swapper/207:07:432
61926138,7sleep70-21swapper/707:05:087
61926138,7sleep70-21swapper/707:05:077
312082610,0sleep50-21swapper/508:10:085
111391610,30ptp4l0-21swapper/007:08:070
111391610,30ptp4l0-21swapper/007:08:070
111391610,28ptp4l0-21swapper/107:05:121
111391610,28ptp4l0-21swapper/107:05:111
111391600,5ptp4l0-21swapper/407:09:084
111391600,5ptp4l0-21swapper/407:09:074
111391570,5ptp4l0-21swapper/607:06:266
111391570,5ptp4l0-21swapper/607:06:256
111391570,5ptp4l0-21swapper/507:05:525
111391570,5ptp4l0-21swapper/507:05:515
239325332,7sleep30-21swapper/307:07:293
239325332,7sleep30-21swapper/307:07:283
111391350,1ptp4l21601-21sed09:00:001
111391340,0ptp4l0-21swapper/009:45:180
111391330,1ptp4l11058-21latency08:35:151
111391330,0ptp4l0-21swapper/008:05:110
111391320,0ptp4l0-21swapper/412:34:374
111391320,0ptp4l0-21swapper/011:56:080
111391310,0ptp4l25992-21diskmemload11:04:304
111391310,0ptp4l0-21swapper/411:41:304
111391310,0ptp4l0-21swapper/410:32:354
111391310,0ptp4l0-21swapper/109:45:111
111391310,0ptp4l0-21swapper/011:45:190
111391310,0ptp4l0-21swapper/011:10:170
111391310,0ptp4l0-21swapper/010:36:040
111391310,0ptp4l0-21swapper/008:20:200
111391300,0ptp4l0-21swapper/411:20:214
111391300,0ptp4l0-21swapper/010:40:190
111391300,0ptp4l0-21swapper/009:42:140
111391300,0ptp4l0-21swapper/009:42:130
111391290,2ptp4l0-21swapper/110:53:161
111391290,0ptp4l0-21swapper/510:05:485
111391290,0ptp4l0-21swapper/412:04:004
111391290,0ptp4l0-21swapper/411:49:044
111391290,0ptp4l0-21swapper/410:41:304
111391290,0ptp4l0-21swapper/410:25:184
111391290,0ptp4l0-21swapper/410:08:364
111391290,0ptp4l0-21swapper/407:50:014
111391290,0ptp4l0-21swapper/407:15:194
111391290,0ptp4l0-21swapper/011:53:470
111391280,0ptp4l0-21swapper/512:30:185
111391280,0ptp4l0-21swapper/509:36:225
111391280,0ptp4l0-21swapper/509:21:415
111391280,0ptp4l0-21swapper/412:19:304
111391280,0ptp4l0-21swapper/411:37:354
111391280,0ptp4l0-21swapper/411:26:174
111391280,0ptp4l0-21swapper/410:54:484
111391280,0ptp4l0-21swapper/409:56:444
111391280,0ptp4l0-21swapper/409:42:084
111391280,0ptp4l0-21swapper/409:42:084
111391280,0ptp4l0-21swapper/409:15:074
111391280,0ptp4l0-21swapper/409:12:594
111391280,0ptp4l0-21swapper/111:44:551
111391280,0ptp4l0-21swapper/110:33:101
111391280,0ptp4l0-21swapper/012:25:350
111391280,0ptp4l0-21swapper/012:20:200
111391280,0ptp4l0-21swapper/012:20:200
111391280,0ptp4l0-21swapper/010:31:480
111391280,0ptp4l0-21swapper/010:04:350
111391280,0ptp4l0-21swapper/009:20:010
111391280,0ptp4l0-21swapper/009:00:180
111391270,2ptp4l0-21swapper/411:51:564
111391270,2ptp4l0-21swapper/111:18:591
111391270,0ptp4l0-21swapper/411:10:584
111391270,0ptp4l0-21swapper/410:17:344
111391270,0ptp4l0-21swapper/409:28:044
111391270,0ptp4l0-21swapper/210:12:502
111391270,0ptp4l0-21swapper/112:31:591
111391270,0ptp4l0-21swapper/111:25:171
111391270,0ptp4l0-21swapper/012:37:370
111391270,0ptp4l0-21swapper/012:08:100
111391270,0ptp4l0-21swapper/011:18:340
111391270,0ptp4l0-21swapper/010:17:550
111391270,0ptp4l0-21swapper/009:16:480
111391260,0ptp4l0-21swapper/511:01:285
111391260,0ptp4l0-21swapper/510:25:225
111391260,0ptp4l0-21swapper/411:59:384
111391260,0ptp4l0-21swapper/411:31:364
111391260,0ptp4l0-21swapper/410:02:464
111391260,0ptp4l0-21swapper/409:20:424
111391260,0ptp4l0-21swapper/408:24:284
111391260,0ptp4l0-21swapper/407:15:014
111391260,0ptp4l0-21swapper/112:01:501
111391260,0ptp4l0-21swapper/111:30:221
111391260,0ptp4l0-21swapper/111:10:131
111391260,0ptp4l0-21swapper/111:09:121
111391260,0ptp4l0-21swapper/011:38:320
111391260,0ptp4l0-21swapper/011:03:220
111391260,0ptp4l0-21swapper/010:27:200
111391260,0ptp4l0-21swapper/009:33:530
111391260,0ptp4l0-21swapper/009:27:010
111391260,0ptp4l0-21swapper/009:12:120
111391250,2ptp4l0-21swapper/009:53:490
111391250,1ptp4l25-21ksoftirqd/112:23:291
111391250,1ptp4l25-21ksoftirqd/112:23:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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