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2026-05-13 - 12:34

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 Wed May 13, 2026 00:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9566112242234,5sleep70-21swapper/719:09:1717
9533902239218,13sleep180-21swapper/1819:05:0610
9564382235227,5sleep130-21swapper/1319:07:025
9563592233213,13sleep30-21swapper/319:06:1113
9566052228208,12sleep20-21swapper/219:09:1112
9563472228214,9sleep160-21swapper/1619:06:058
9566102225217,5sleep60-21swapper/619:09:1516
9564652224205,12sleep170-21swapper/1719:07:279
9563612224204,12sleep50-21swapper/519:06:1315
9565552220201,12sleep40-21swapper/419:08:3314
9566612218199,11sleep100-21swapper/1019:09:392
9563712217197,12sleep150-21swapper/1519:06:247
9567082213193,12sleep90-21swapper/919:09:5819
9566942210191,12sleep10-21swapper/119:09:501
9564102206187,12sleep00-21swapper/019:06:500
9563212206197,6sleep120-21swapper/1219:05:404
9563382205196,6sleep80-21swapper/819:05:5718
9564942202181,13sleep190-21swapper/1919:07:4811
9565132197178,12sleep140-21swapper/1419:08:036
9563182185174,7sleep110-21swapper/1119:05:393
957105993634,1cyclictest1700471-21CPU8
95707099360,1cyclictest1700471-21CPU16
95707099360,1cyclictest1700471-21CPU16
957100993429,5cyclictest0-21swapper/1423:41:586
95710099340,0cyclictest0-21swapper/1422:44:586
95707099340,1cyclictest1700471-21CPU16
957060993433,0cyclictest0-21swapper/320:08:0013
95705099341,32cyclictest1700472-21CPU0
95705099341,32cyclictest1700472-21CPU0
957112993333,0cyclictest0-21swapper/1821:27:5810
957112993333,0cyclictest0-21swapper/1821:27:5810
95711299330,0cyclictest0-21swapper/1819:36:5910
95711099330,33cyclictest0-21swapper/1722:14:589
957079993331,1cyclictest1700472-21CPU19
957079993331,1cyclictest1700472-21CPU19
95707499330,0cyclictest0-21swapper/720:14:0017
957060993332,0cyclictest0-21swapper/320:46:0013
95705499330,32cyclictest0-21swapper/121:03:001
95705099330,32cyclictest0-21swapper/020:05:590
957112993232,0cyclictest0-21swapper/1820:16:5910
957105993232,0cyclictest0-21swapper/1620:45:598
957105993232,0cyclictest0-21swapper/1620:04:598
957087993231,1cyclictest0-21swapper/1120:39:593
957070993232,0cyclictest0-21swapper/621:18:5816
95707099320,0cyclictest0-21swapper/620:06:5916
957058993232,0cyclictest0-21swapper/219:53:5912
957058993232,0cyclictest0-21swapper/200:14:5912
95705099320,31cyclictest0-21swapper/021:07:590
957112993131,0cyclictest0-21swapper/1819:32:5910
957105993131,0cyclictest0-21swapper/1621:25:598
957105993131,0cyclictest0-21swapper/1621:25:588
957082993130,1cyclictest1141rcuc/1020:48:002
957079993131,0cyclictest0-21swapper/919:36:5919
957076993131,0cyclictest0-21swapper/800:14:5818
957076993130,1cyclictest1700472-21CPU18
957074993127,3cyclictest1700471-21CPU17
957070993131,0cyclictest0-21swapper/620:11:5916
957070993131,0cyclictest0-21swapper/619:34:0016
957058993130,1cyclictest0-21swapper/219:28:5912
957054993131,0cyclictest0-21swapper/119:35:591
95705499310,31cyclictest0-21swapper/119:27:591
957112993030,0cyclictest0-21swapper/1820:45:5910
957070993030,0cyclictest0-21swapper/620:20:5916
957070993030,0cyclictest0-21swapper/619:25:5916
957060993030,0cyclictest0-21swapper/319:17:0013
957050993029,0cyclictest0-21swapper/021:33:580
957050993029,0cyclictest0-21swapper/021:33:580
957112992928,1cyclictest0-21swapper/1820:07:5910
957105992929,0cyclictest0-21swapper/1600:38:588
957105992929,0cyclictest0-21swapper/1600:38:588
957105992927,1cyclictest1700472-21CPU8
957103992922,6cyclictest0-21swapper/1523:41:587
957096992923,6cyclictest0-21swapper/1323:05:585
957079992929,0cyclictest0-21swapper/919:32:5919
957076992929,0cyclictest0-21swapper/819:29:0018
957074992929,0cyclictest0-21swapper/719:36:5917
957074992928,1cyclictest871rcuc/720:47:5917
957070992929,0cyclictest0-21swapper/623:14:5816
957070992929,0cyclictest0-21swapper/620:28:0016
957070992929,0cyclictest0-21swapper/619:58:0016
957060992929,0cyclictest0-21swapper/322:14:5813
957060992929,0cyclictest0-21swapper/321:22:5813
957060992929,0cyclictest0-21swapper/320:52:0013
957054992929,0cyclictest0-21swapper/119:19:591
957105992828,0cyclictest0-21swapper/1619:35:008
957096992820,8cyclictest0-21swapper/1319:57:595
957093992822,6cyclictest0-21swapper/1222:44:594
957082992825,3cyclictest0-21swapper/1021:25:582
957082992825,3cyclictest0-21swapper/1021:25:582
957076992828,0cyclictest0-21swapper/821:13:5818
957070992828,0cyclictest0-21swapper/621:20:5816
957068992828,0cyclictest0-21swapper/521:51:5915
957058992828,0cyclictest0-21swapper/221:13:5812
957054992828,0cyclictest0-21swapper/122:51:581
957112992727,0cyclictest0-21swapper/1819:16:5910
957110992726,0cyclictest0-21swapper/1721:51:589
957105992727,0cyclictest0-21swapper/1619:30:008
957105992725,1cyclictest1700471-21CPU8
957103992721,5cyclictest1700472-21CPU7
957096992720,7cyclictest0-21swapper/1320:43:595
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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