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2026-05-01 - 06:53

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #4

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 rack0slot4s.osadl.org (updated Fri May 01, 2026 00:46:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16132942392385,4sleep130-21swapper/1319:05:215
16145382367347,13sleep70-21swapper/719:08:2813
16146192364322,14sleep90-21swapper/919:09:3515
16144462360323,12sleep110-21swapper/1119:07:123
16144022359338,14sleep120-21swapper/1219:06:424
16144792358338,13sleep80-21swapper/819:07:4114
16111932358338,13sleep20-21swapper/219:05:108
16144082353334,12sleep10-21swapper/119:06:461
16144762352332,13sleep50-21swapper/519:07:3811
16111822352332,13sleep140-21swapper/1419:05:066
16143542351331,13sleep60-21swapper/619:06:0212
16144692350330,13sleep150-21swapper/1519:07:327
16143592350332,12sleep100-21swapper/1019:06:062
16143762345324,14sleep40-21swapper/419:06:1610
16144552343324,13sleep30-21swapper/319:07:209
16111912342321,14sleep00-21swapper/019:05:080
1615177994444,0cyclictest0-21swapper/1121:39:463
1615177994040,0cyclictest0-21swapper/1123:35:253
1615177994040,0cyclictest0-21swapper/1123:35:243
1615177994040,0cyclictest0-21swapper/1100:06:183
1615175994039,1cyclictest1836288-21kworker/10:0+events22:53:302
1615185993939,0cyclictest0-21swapper/1323:35:255
1615185993939,0cyclictest0-21swapper/1323:35:245
1615177993934,5cyclictest0-21swapper/1123:43:563
1615175993939,0cyclictest1908591-21kworker/10:2+events00:21:032
1615175993939,0cyclictest1809218-21kworker/10:0+events22:23:552
1615175993939,0cyclictest1793123-21kworker/10:2+events22:10:362
1615175993939,0cyclictest1741268-21kworker/10:0+events21:37:482
1615175993939,0cyclictest1684674-21kworker/10:1+events21:30:222
1615175993939,0cyclictest1684674-21kworker/10:1+events21:28:422
1615175993939,0cyclictest1572589-21kworker/10:0+events20:15:242
1615175993939,0cyclictest1572589-21kworker/10:0+events19:53:542
1615175993938,1cyclictest1908591-21kworker/10:2+events00:35:512
1615175993938,1cyclictest1853755-21kworker/10:2+events22:59:152
1615175993938,1cyclictest1836288-21kworker/10:0+events22:41:242
1615175993938,1cyclictest1809218-21kworker/10:0+events22:27:382
1615175993938,1cyclictest1684674-21kworker/10:1+events21:19:382
1615150993930,5cyclictest1816988-21kworker/u32:3+events_unbound23:05:178
1615185993838,0cyclictest0-21swapper/1300:06:195
1615175993838,0cyclictest1908591-21kworker/10:2+events23:48:342
1615175993838,0cyclictest1908591-21kworker/10:2+events00:32:342
1615175993838,0cyclictest1908591-21kworker/10:2+events00:25:142
1615175993838,0cyclictest1908591-21kworker/10:2+events00:16:422
1615175993838,0cyclictest1894363-21kworker/10:0+events23:37:352
1615175993838,0cyclictest1894363-21kworker/10:0+events23:37:342
1615175993838,0cyclictest1894363-21kworker/10:0+events23:32:502
1615175993838,0cyclictest1894363-21kworker/10:0+events23:32:502
1615175993838,0cyclictest1853755-21kworker/10:2+events23:23:082
1615175993838,0cyclictest1853755-21kworker/10:2+events23:01:312
1615175993838,0cyclictest1836288-21kworker/10:0+events22:49:462
1615175993838,0cyclictest1793123-21kworker/10:2+events22:18:142
1615175993838,0cyclictest1779954-21kworker/10:1+events22:37:562
1615175993838,0cyclictest1741268-21kworker/10:0+events22:01:462
1615175993838,0cyclictest1741268-21kworker/10:0+events21:59:142
1615175993838,0cyclictest1741268-21kworker/10:0+events21:51:262
1615175993838,0cyclictest1741268-21kworker/10:0+events21:49:332
1615175993838,0cyclictest1684674-21kworker/10:1+events21:11:482
1615175993838,0cyclictest1684674-21kworker/10:1+events20:32:582
1615175993838,0cyclictest1684674-21kworker/10:1+events20:32:582
1615175993838,0cyclictest1670300-21kworker/10:2+events20:27:502
1615175993838,0cyclictest1670300-21kworker/10:2+events20:27:502
1615175993838,0cyclictest1572589-21kworker/10:0+events20:22:182
1615175993838,0cyclictest1572589-21kworker/10:0+events20:00:022
1615175993838,0cyclictest1572589-21kworker/10:0+events19:36:282
1615175993838,0cyclictest1572589-21kworker/10:0+events19:30:202
1615175993837,1cyclictest1684674-21kworker/10:1+events21:21:462
1615175993836,1cyclictest1853755-21kworker/10:2+events23:12:542
1615177993737,0cyclictest0-21swapper/1100:04:583
1615175993737,0cyclictest1908591-21kworker/10:2+events23:59:542
1615175993737,0cyclictest1908591-21kworker/10:2+events23:54:182
1615175993737,0cyclictest1908591-21kworker/10:2+events00:10:392
1615175993737,0cyclictest1908591-21kworker/10:2+events00:08:502
1615175993737,0cyclictest1894363-21kworker/10:0+events23:40:122
1615175993737,0cyclictest1853755-21kworker/10:2+events23:26:212
1615175993737,0cyclictest1853755-21kworker/10:2+events23:26:202
1615175993737,0cyclictest1853755-21kworker/10:2+events23:05:402
1615175993737,0cyclictest1809218-21kworker/10:0+events22:30:442
1615175993737,0cyclictest1684674-21kworker/10:1+events21:00:262
1615175993737,0cyclictest1684674-21kworker/10:1+events20:55:012
1615175993737,0cyclictest1684674-21kworker/10:1+events20:53:322
1615175993737,0cyclictest1684674-21kworker/10:1+events20:45:272
1615175993737,0cyclictest1572589-21kworker/10:0+events20:05:102
1615175993737,0cyclictest1572589-21kworker/10:0+events19:48:232
1615175993737,0cyclictest1572589-21kworker/10:0+events19:20:292
1615175993736,1cyclictest1908591-21kworker/10:2+events00:03:092
1615185993636,0cyclictest0-21swapper/1323:07:545
1615185993635,1cyclictest0-21swapper/1300:04:585
1615177993636,0cyclictest0-21swapper/1122:49:383
1615175993636,0cyclictest1853755-21kworker/10:2+events23:15:232
1615175993636,0cyclictest1741268-21kworker/10:0+events22:08:222
1615175993636,0cyclictest1741268-21kworker/10:0+events21:40:122
1615175993636,0cyclictest1572589-21kworker/10:0+events20:14:022
1615175993636,0cyclictest1572589-21kworker/10:0+events19:55:092
1615175993636,0cyclictest1572589-21kworker/10:0+events19:43:062
1615175993636,0cyclictest1572589-21kworker/10:0+events19:12:022
1615177993535,0cyclictest0-21swapper/1122:44:123
1615175993535,0cyclictest1684674-21kworker/10:1+events21:05:262
1615175993535,0cyclictest1684674-21kworker/10:1+events20:40:422
1615175993535,0cyclictest1572589-21kworker/10:0+events19:25:462
1615175993535,0cyclictest1572589-21kworker/10:0+events19:18:282
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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