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2026-07-19 - 02:38

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 Sat Jul 18, 2026 12:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
117492950,0sleep4471rcuc/409:20:114
117492950,0sleep4471rcuc/409:20:104
6362650,0sleep60-21swapper/611:53:306
1185926443,6sleep20-21swapper/207:07:542
111391630,5ptp4l0-21swapper/507:08:035
111391630,30ptp4l0-21swapper/107:09:391
1170626140,7sleep40-21swapper/407:05:574
111391600,29ptp4l0-21swapper/007:05:500
1168225038,7sleep70-21swapper/707:05:367
1168124939,6sleep60-21swapper/607:05:356
1171424736,7sleep30-21swapper/307:06:043
111391350,0ptp4l0-21swapper/411:13:304
111391330,1ptp4l2429-21mailstats07:55:191
111391320,3ptp4l0-21swapper/411:00:214
111391320,0ptp4l0-21swapper/511:31:425
111391320,0ptp4l0-21swapper/411:54:444
111391320,0ptp4l0-21swapper/409:19:574
111391320,0ptp4l0-21swapper/108:25:171
111391310,0ptp4l0-21swapper/409:44:244
111391310,0ptp4l0-21swapper/409:32:034
111391300,3ptp4l0-21swapper/111:30:551
111391300,0ptp4l0-21swapper/412:08:224
111391300,0ptp4l0-21swapper/411:30:124
111391300,0ptp4l0-21swapper/411:29:014
111391300,0ptp4l0-21swapper/410:46:204
111391300,0ptp4l0-21swapper/410:05:224
111391300,0ptp4l0-21swapper/409:49:254
111391300,0ptp4l0-21swapper/409:39:224
111391290,0ptp4l0-21swapper/712:07:117
111391290,0ptp4l0-21swapper/609:20:376
111391290,0ptp4l0-21swapper/609:20:376
111391290,0ptp4l0-21swapper/511:43:015
111391290,0ptp4l0-21swapper/412:31:374
111391290,0ptp4l0-21swapper/411:20:194
111391290,0ptp4l0-21swapper/411:17:054
111391290,0ptp4l0-21swapper/311:47:463
111391290,0ptp4l0-21swapper/011:28:040
111391280,2ptp4l0-21swapper/511:55:365
111391280,2ptp4l0-21swapper/411:08:594
111391280,0ptp4l0-21swapper/412:35:304
111391280,0ptp4l0-21swapper/412:01:584
111391280,0ptp4l0-21swapper/412:01:574
111391280,0ptp4l0-21swapper/411:46:594
111391280,0ptp4l0-21swapper/409:58:124
111391280,0ptp4l0-21swapper/309:46:223
111391280,0ptp4l0-21swapper/011:43:470
111391280,0ptp4l0-21swapper/011:16:100
111391280,0ptp4l0-21swapper/010:04:280
111391280,0ptp4l0-21swapper/009:31:100
111391280,0ptp4l0-21swapper/009:22:290
111391280,0ptp4l0-21swapper/009:22:280
111391270,3ptp4l0-21swapper/110:01:401
111391270,2ptp4l0-21swapper/509:35:305
111391270,0ptp4l3052-21diskmemload10:37:164
111391270,0ptp4l0-21swapper/710:34:257
111391270,0ptp4l0-21swapper/509:26:185
111391270,0ptp4l0-21swapper/410:53:584
111391270,0ptp4l0-21swapper/410:41:484
111391270,0ptp4l0-21swapper/410:03:544
111391270,0ptp4l0-21swapper/407:17:204
111391270,0ptp4l0-21swapper/110:35:341
111391270,0ptp4l0-21swapper/012:31:390
111391260,5ptp4l19448-21sshd07:23:200
111391260,0ptp4l0-21swapper/509:42:355
111391260,0ptp4l0-21swapper/412:27:234
111391260,0ptp4l0-21swapper/412:13:174
111391260,0ptp4l0-21swapper/411:40:134
111391260,0ptp4l0-21swapper/409:10:214
111391260,0ptp4l0-21swapper/109:41:191
111391260,0ptp4l0-21swapper/012:20:130
111391260,0ptp4l0-21swapper/012:11:500
111391260,0ptp4l0-21swapper/011:59:140
111391260,0ptp4l0-21swapper/011:53:180
111391260,0ptp4l0-21swapper/011:09:280
111391260,0ptp4l0-21swapper/010:56:170
111391260,0ptp4l0-21swapper/010:30:150
111391260,0ptp4l0-21swapper/010:15:210
111391260,0ptp4l0-21swapper/010:10:120
111391260,0ptp4l0-21swapper/008:50:200
111391250,1ptp4l9098-21users09:15:200
111391250,1ptp4l21851-21cat08:40:001
111391250,1ptp4l1916-21irqrtprio07:55:155
111391250,0ptp4l0-21swapper/509:20:195
111391250,0ptp4l0-21swapper/509:20:195
111391250,0ptp4l0-21swapper/410:56:154
111391250,0ptp4l0-21swapper/410:12:254
111391250,0ptp4l0-21swapper/110:06:071
111391250,0ptp4l0-21swapper/107:55:001
111391250,0ptp4l0-21swapper/012:00:150
111391250,0ptp4l0-21swapper/012:00:150
111391250,0ptp4l0-21swapper/011:24:070
111391250,0ptp4l0-21swapper/011:10:040
111391250,0ptp4l0-21swapper/010:40:310
111391250,0ptp4l0-21swapper/010:26:570
111391240,1ptp4l4369-21wc11:15:195
111391240,1ptp4l18460-21memory07:20:155
111391240,1ptp4l15671-21irqrtprio08:25:145
111391240,1ptp4l12901-21fw_conntrack10:45:130
111391240,1ptp4l10399-21wc08:14:595
111391240,0ptp4l0-21swapper/609:27:106
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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