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2026-04-30 - 12:26

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 Thu Apr 30, 2026 00:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3929772257249,5sleep120-21swapper/1219:08:594
3929712253245,5sleep80-21swapper/819:08:5518
3929582253245,5sleep00-21swapper/019:08:470
3897752245208,30sleep60-21swapper/619:05:1216
3897642243223,12sleep180-21swapper/1819:05:0410
3927692239219,12sleep160-21swapper/1619:06:428
3897632237230,4sleep170-21swapper/1719:05:039
3930292235214,13sleep90-21swapper/919:09:3619
3928522235215,12sleep70-21swapper/719:07:5317
3927642235216,12sleep110-21swapper/1119:06:373
3926952231212,12sleep100-21swapper/1019:05:362
3928142229210,12sleep150-21swapper/1519:07:217
3927092229210,12sleep30-21swapper/319:05:4913
3929922228209,12sleep10-21swapper/119:09:081
3928372228209,12sleep130-21swapper/1319:07:395
3929132226206,13sleep40-21swapper/419:08:3114
3927722225205,12sleep190-21swapper/1919:06:4511
3930682214195,12sleep50-21swapper/519:09:5215
3930202213194,11sleep20-21swapper/219:09:2912
3927672202183,12sleep140-21swapper/1419:06:406
39350799726,28cyclictest154-21ksoftirqd/1421:16:266
39348499506,34cyclictest0-21swapper/700:31:2617
4646622380,0sleep100-21swapper/1020:30:212
39349199340,34cyclictest0-21swapper/919:37:5919
39348199340,33cyclictest0-21swapper/621:25:5816
393520993332,1cyclictest0-21swapper/1819:40:0010
393504993333,0cyclictest0-21swapper/1320:05:595
39350499330,0cyclictest0-21swapper/1320:17:595
39350299330,32cyclictest0-21swapper/1200:04:594
39350299330,32cyclictest0-21swapper/1200:04:594
393491993333,0cyclictest0-21swapper/920:04:0019
393491993333,0cyclictest0-21swapper/919:33:5919
39349199330,33cyclictest0-21swapper/920:28:5919
39348499330,1cyclictest465074-21systemd20:34:5917
393467993332,1cyclictest0-21swapper/220:20:5912
393507993232,0cyclictest0-21swapper/1420:18:596
393507993232,0cyclictest0-21swapper/1420:14:596
39350799320,0cyclictest0-21swapper/1423:29:596
39349199320,32cyclictest0-21swapper/921:34:5919
39348799320,1cyclictest477567-21crond20:49:5918
39348799320,1cyclictest477567-21crond20:49:5918
393463993231,0cyclictest0-21swapper/119:59:591
39352099310,31cyclictest0-21swapper/1819:10:0010
393507993131,0cyclictest0-21swapper/1420:22:596
393504993131,0cyclictest0-21swapper/1319:43:585
393491993131,0cyclictest0-21swapper/923:44:5919
393491993131,0cyclictest0-21swapper/919:45:5919
393491993131,0cyclictest0-21swapper/919:27:5919
393474993126,5cyclictest0-21swapper/420:23:5914
393524993030,0cyclictest0-21swapper/1921:22:5911
393524993029,1cyclictest0-21swapper/1919:15:0011
393520993030,0cyclictest0-21swapper/1819:27:0010
393517993030,0cyclictest456693-21latency_hist20:24:589
393517993030,0cyclictest0-21swapper/1721:43:599
393511993030,0cyclictest0-21swapper/1519:23:597
393511993029,1cyclictest428152-21latency_hist19:50:007
393504993030,0cyclictest0-21swapper/1319:52:595
393502993030,0cyclictest0-21swapper/1219:42:594
393491993030,0cyclictest0-21swapper/921:15:5919
393491993030,0cyclictest0-21swapper/920:37:5919
393491993030,0cyclictest0-21swapper/920:37:5919
39348499300,30cyclictest0-21swapper/721:15:5917
39348199300,1cyclictest592402-21systemd23:49:5916
393467993029,1cyclictest0-21swapper/220:32:5912
393520992929,0cyclictest0-21swapper/1819:56:5910
393514992929,0cyclictest0-21swapper/1621:14:598
393507992929,0cyclictest0-21swapper/1419:39:596
39350799290,29cyclictest0-21swapper/1422:39:596
393502992929,0cyclictest0-21swapper/1220:18:594
393502992926,3cyclictest0-21swapper/1220:43:594
393502992926,3cyclictest0-21swapper/1220:43:594
393497992929,0cyclictest0-21swapper/1119:55:003
393491992929,0cyclictest0-21swapper/920:08:5919
393491992929,0cyclictest0-21swapper/919:21:5919
393481992929,0cyclictest0-21swapper/619:44:0016
393474992929,0cyclictest0-21swapper/419:24:5914
39347499290,0cyclictest0-21swapper/422:59:5914
393463992928,1cyclictest0-21swapper/119:40:001
393514992828,0cyclictest0-21swapper/1623:54:598
393514992828,0cyclictest0-21swapper/1621:22:598
393514992827,1cyclictest0-21swapper/1619:15:008
393507992828,0cyclictest0-21swapper/1423:34:596
393507992828,0cyclictest0-21swapper/1420:32:596
393507992828,0cyclictest0-21swapper/1419:55:596
393507992828,0cyclictest0-21swapper/1419:53:596
393504992828,0cyclictest0-21swapper/1321:09:595
393504992828,0cyclictest0-21swapper/1320:04:595
393504992828,0cyclictest0-21swapper/1319:48:595
393502992828,0cyclictest0-21swapper/1220:29:594
393502992828,0cyclictest0-21swapper/1219:51:004
393491992828,0cyclictest0-21swapper/920:22:5919
393484992828,0cyclictest0-21swapper/721:25:5917
393477992828,0cyclictest0-21swapper/521:09:5815
393467992828,0cyclictest0-21swapper/220:37:5912
393467992828,0cyclictest0-21swapper/220:37:5912
393467992827,1cyclictest448739-21latency_hist20:14:5912
393463992827,1cyclictest0-21swapper/119:10:001
393463992826,1cyclictest0-21swapper/121:16:261
39346399280,28cyclictest0-21swapper/121:20:591
393524992726,1cyclictest0-21swapper/1920:28:5911
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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