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2026-06-15 - 10:28

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #6

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 rack0slot6s.osadl.org (updated Mon Jun 15, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14882322245225,12sleep70-21swapper/719:05:0817
14912082244225,12sleep120-21swapper/1219:06:134
14913762243223,12sleep170-21swapper/1719:08:399
14912512242220,14sleep90-21swapper/919:06:5119
14913722241223,11sleep150-21swapper/1519:08:367
14913462241222,12sleep130-21swapper/1319:08:145
14913752240221,12sleep160-21swapper/1619:08:388
14901882240220,12sleep190-21swapper/1919:05:2011
14913342239221,11sleep10-21swapper/119:08:031
14912922239220,12sleep50-21swapper/519:07:2615
14913392236217,12sleep60-21swapper/619:08:0716
14914282234215,12sleep40-21swapper/419:09:2614
14912832233212,13sleep180-21swapper/1819:07:2010
14912952230210,12sleep80-21swapper/819:07:3018
14912762230211,12sleep110-21swapper/1119:07:133
14911702230211,12sleep20-21swapper/219:05:4312
14913952229210,12sleep140-21swapper/1419:08:556
14911972228189,11sleep30-21swapper/319:06:0513
14912862227208,12sleep00-21swapper/019:07:220
14912972226206,12sleep100-21swapper/1019:07:322
149184599896,38cyclictest0-21swapper/820:57:5618
149187799340,33cyclictest0-21swapper/1819:52:5910
149186699330,33cyclictest0-21swapper/1420:48:596
149184599330,0cyclictest0-21swapper/821:50:5918
149184599330,0cyclictest0-21swapper/821:50:5918
1491877993232,0cyclictest0-21swapper/1800:39:5910
149185099320,0cyclictest0-21swapper/1000:02:312
1491819993231,1cyclictest1562587-21kworker/0:2+pm21:34:250
1491868993131,0cyclictest0-21swapper/1520:11:597
1491857993131,0cyclictest0-21swapper/1220:47:594
1491857993131,0cyclictest0-21swapper/1220:09:584
149185099310,30cyclictest0-21swapper/1023:32:522
1491847993130,1cyclictest194550irq/149-eno119:55:0119
1491837993131,0cyclictest0-21swapper/619:54:5816
1491821993131,0cyclictest0-21swapper/120:51:591
1491819993131,0cyclictest1648833-21kworker/0:0+pm22:42:500
149181999310,0cyclictest0-21swapper/020:54:590
149187799300,29cyclictest0-21swapper/1819:45:1910
1491868993030,0cyclictest0-21swapper/1519:45:597
1491862993030,0cyclictest0-21swapper/1320:47:595
149185099300,29cyclictest0-21swapper/1023:11:542
149185099300,29cyclictest0-21swapper/1022:08:232
149185099300,29cyclictest0-21swapper/1020:23:482
149185099300,29cyclictest0-21swapper/1020:08:592
1491831993030,0cyclictest0-21swapper/420:43:5914
1491831993030,0cyclictest0-21swapper/420:24:5914
1491819993030,0cyclictest1648833-21kworker/0:0+pm23:06:520
1491819993030,0cyclictest0-21swapper/020:48:580
1491819993030,0cyclictest0-21swapper/020:39:590
1491819993029,1cyclictest1648833-21kworker/0:0+pm23:27:020
1491857992929,0cyclictest0-21swapper/1221:27:584
149185099290,28cyclictest0-21swapper/1022:46:192
149185099290,28cyclictest0-21swapper/1022:04:172
149185099290,28cyclictest0-21swapper/1020:02:352
149185099290,28cyclictest0-21swapper/1019:32:202
149185099290,0cyclictest0-21swapper/1022:28:532
149185099290,0cyclictest0-21swapper/1022:24:192
1491847992929,0cyclictest0-21swapper/919:52:5919
1491821992929,0cyclictest0-21swapper/121:07:581
1491821992929,0cyclictest0-21swapper/121:04:591
1491819992929,0cyclictest1648833-21kworker/0:0+pm23:56:540
1491819992929,0cyclictest1462287-21kworker/0:2+pm19:43:580
1491819992929,0cyclictest1462287-21kworker/0:2+pm19:38:470
1491819992928,1cyclictest1641806-21kworker/0:2+pm22:17:400
1491819992928,1cyclictest1562587-21kworker/0:2+pm21:23:570
1491819992928,1cyclictest1537944-21kworker/0:0+pm20:16:390
1491819992928,1cyclictest1462287-21kworker/0:2+pm19:52:550
1491819992927,1cyclictest1562587-21kworker/0:2+pm21:08:320
149181999290,28cyclictest0-21swapper/020:57:560
1491857992828,0cyclictest0-21swapper/1221:08:594
1491850992828,0cyclictest0-21swapper/1021:43:552
1491850992828,0cyclictest0-21swapper/1021:24:212
1491850992828,0cyclictest0-21swapper/1020:35:562
149185099280,27cyclictest0-21swapper/1023:59:462
149185099280,27cyclictest0-21swapper/1019:57:542
149185099280,0cyclictest0-21swapper/1023:51:522
149185099280,0cyclictest0-21swapper/1021:56:372
1491829992828,0cyclictest0-21swapper/321:50:5913
1491829992828,0cyclictest0-21swapper/321:50:5813
1491821992828,0cyclictest0-21swapper/119:23:581
1491819992828,0cyclictest1648833-21kworker/0:0+pm23:19:270
1491819992828,0cyclictest1641806-21kworker/0:2+pm22:24:340
1491819992828,0cyclictest1612010-21kworker/0:0+pm22:06:520
1491819992828,0cyclictest1562587-21kworker/0:2+pm21:04:040
1491819992828,0cyclictest1537944-21kworker/0:0+pm20:13:020
1491819992828,0cyclictest1462287-21kworker/0:2+pm19:23:550
1491819992827,1cyclictest1648833-21kworker/0:0+pm23:36:580
1491819992827,1cyclictest1648833-21kworker/0:0+pm22:56:030
1491819992827,1cyclictest1562587-21kworker/0:2+pm21:28:380
1491877992727,0cyclictest0-21swapper/1819:41:5810
1491874992727,0cyclictest0-21swapper/1721:08:589
1491874992727,0cyclictest0-21swapper/1719:23:589
1491857992727,0cyclictest0-21swapper/1221:44:584
1491850992727,0cyclictest0-21swapper/1022:58:282
1491850992727,0cyclictest0-21swapper/1022:18:282
1491850992727,0cyclictest0-21swapper/1021:02:492
1491850992727,0cyclictest0-21swapper/1019:40:592
1491850992727,0cyclictest0-21swapper/1019:18:292
149185099270,26cyclictest0-21swapper/1021:13:182
149185099270,26cyclictest0-21swapper/1019:51:442
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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