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2026-05-19 - 08:21

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #5

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 rackeslot5s.osadl.org (updated Tue May 19, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23968992523,1cyclictest0-21swapper/300:20:033
2396899250,24cyclictest18395-21diskmemload22:09:393
2396899250,24cyclictest18395-21diskmemload21:18:553
2396499250,24cyclictest0-21swapper/223:45:262
2396499250,24cyclictest0-21swapper/221:29:392
2396499250,1cyclictest0-21swapper/221:19:282
2396299250,24cyclictest18395-21diskmemload22:25:471
23958992524,1cyclictest62550irq/127-eno121:13:400
2395899250,24cyclictest20733-21rm22:08:200
2395899250,24cyclictest14610-21ssh23:00:320
2395899250,1cyclictest29226-21ssh00:38:140
23968992422,1cyclictest0-21swapper/321:25:473
2396899240,23cyclictest18395-21diskmemload23:47:373
2396899240,23cyclictest18395-21diskmemload22:35:143
2396899240,23cyclictest0-21swapper/322:55:503
2396899240,23cyclictest0-21swapper/321:58:373
2396899240,23cyclictest0-21swapper/300:31:183
2396499240,23cyclictest18395-21diskmemload23:19:592
2396499240,23cyclictest18395-21diskmemload22:49:452
2396499240,23cyclictest16766-21perf20:00:002
2396499240,23cyclictest11220-21dump-pmu-power20:55:002
2396499240,23cyclictest0-21swapper/222:31:372
2396499240,23cyclictest0-21swapper/200:28:392
2396499240,0cyclictest0-21swapper/221:13:402
23962992421,2cyclictest313-21systemd-journal20:05:001
2396299240,24cyclictest0-21swapper/123:44:231
2396299240,1cyclictest19852-21ssh22:07:361
2396299240,0cyclictest0-21swapper/123:17:301
23958992424,0cyclictest0-21swapper/021:19:280
23958992423,1cyclictest62550irq/127-eno121:29:390
23958992423,1cyclictest18395-21diskmemload23:45:260
2395899240,24cyclictest18395-21diskmemload22:14:560
2395899240,24cyclictest1464-21sh00:13:580
2395899240,23cyclictest27406-21apt-get23:12:310
2395899240,23cyclictest20361-21rm23:05:390
2395899240,1cyclictest18395-21diskmemload21:32:220
2395899240,0cyclictest0-21swapper/022:23:300
23968992323,0cyclictest0-21swapper/323:16:063
23968992323,0cyclictest0-21swapper/323:09:273
23968992323,0cyclictest0-21swapper/322:45:423
23968992323,0cyclictest0-21swapper/322:21:013
23968992322,1cyclictest0-21swapper/321:53:103
23968992321,1cyclictest14748-21sh23:00:423
23968992321,1cyclictest0-21swapper/319:45:023
23968992320,2cyclictest7533-21sh00:19:323
23968992320,2cyclictest7533-21sh00:19:323
2396899230,23cyclictest18395-21diskmemload21:11:053
2396899230,23cyclictest18395-21diskmemload00:35:163
2396899230,23cyclictest10023-21sh22:27:373
2396899230,23cyclictest0-21swapper/322:42:243
2396899230,23cyclictest0-21swapper/322:42:243
2396899230,23cyclictest0-21swapper/322:13:043
2396899230,22cyclictest27204-21ssh00:07:573
2396899230,22cyclictest22017-21ssh23:35:253
2396899230,22cyclictest14213-21ssh23:28:173
2396899230,0cyclictest0-21swapper/323:55:173
2396899230,0cyclictest0-21swapper/323:51:123
2396899230,0cyclictest0-21swapper/322:16:313
2396899230,0cyclictest0-21swapper/321:42:573
2396899230,0cyclictest0-21swapper/300:26:543
23964992323,0cyclictest18395-21diskmemload00:30:102
23964992323,0cyclictest0-21swapper/223:28:002
23964992323,0cyclictest0-21swapper/222:41:202
23964992323,0cyclictest0-21swapper/222:41:202
23964992323,0cyclictest0-21swapper/221:22:472
23964992323,0cyclictest0-21swapper/200:20:572
23964992322,0cyclictest18395-21diskmemload22:02:542
2396499230,2cyclictest6374-21apt19:40:012
2396499230,23cyclictest0-21swapper/222:58:032
2396499230,23cyclictest0-21swapper/222:14:132
2396499230,23cyclictest0-21swapper/221:54:492
2396499230,22cyclictest18395-21diskmemload23:57:192
2396499230,22cyclictest18395-21diskmemload23:06:172
2396499230,22cyclictest18395-21diskmemload22:05:112
2396499230,22cyclictest0-21swapper/223:30:162
2396499230,22cyclictest0-21swapper/222:22:182
2396499230,22cyclictest0-21swapper/221:42:322
2396499230,22cyclictest0-21swapper/200:07:082
2396499230,1cyclictest0-21swapper/223:44:532
2396499230,0cyclictest0-21swapper/223:13:462
2396499230,0cyclictest0-21swapper/222:25:442
23962992323,0cyclictest0-21swapper/123:11:031
23962992323,0cyclictest0-21swapper/123:06:151
23962992323,0cyclictest0-21swapper/122:48:241
23962992323,0cyclictest0-21swapper/122:30:051
23962992322,1cyclictest775-1kworker/u9:021:56:491
23962992321,1cyclictest0-21swapper/122:50:251
23962992321,1cyclictest0-21swapper/121:40:591
23962992321,1cyclictest0-21swapper/121:33:311
23962992321,1cyclictest0-21swapper/120:12:281
23962992321,1cyclictest0-21swapper/100:21:341
23962992320,2cyclictest15373-21sh23:01:361
2396299230,2cyclictest7285-21ssh00:19:141
2396299230,2cyclictest7285-21ssh00:19:141
2396299230,2cyclictest17975-21rm21:37:351
2396299230,2cyclictest10953-21ssh23:26:101
2396299230,23cyclictest0-21swapper/123:30:191
2396299230,23cyclictest0-21swapper/123:21:201
2396299230,23cyclictest0-21swapper/121:10:031
2396299230,23cyclictest0-21swapper/100:35:361
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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