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2025-11-01 - 23:40

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 50 highest latencies:
System rack0slot4s.osadl.org (updated Sat Nov 01, 2025 00:46:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24515982384377,5sleep60-21swapper/619:05:0812
24547842379373,4sleep80-21swapper/819:06:1314
24550442370333,29sleep70-21swapper/719:09:2713
24547452366345,14sleep140-21swapper/1419:05:486
24550622363326,30sleep30-21swapper/319:09:389
24548532362321,14sleep50-21swapper/519:07:0011
24550612354335,12sleep20-21swapper/219:09:378
24548602354316,30sleep120-21swapper/1219:07:064
24547442349328,14sleep130-21swapper/1319:05:465
24550062348328,13sleep100-21swapper/1019:08:572
24550372346327,13sleep00-21swapper/019:09:200
24549862346326,13sleep110-21swapper/1119:08:413
24547852346326,13sleep90-21swapper/919:06:1415
24548392345322,15sleep150-21swapper/1519:06:547
24548892344325,12sleep10-21swapper/119:07:281
24548702342321,14sleep40-21swapper/419:07:1410
24555839911758,29cyclictest2251707-21Chrome_ChildIOT21:04:004
24555779910833,74cyclictest0-21swapper/1021:04:012
2455561999721,75cyclictest0-21swapper/621:03:5912
2455551999636,31cyclictest0-21swapper/321:04:019
2455566999535,60cyclictest88-21ksoftirqd/721:04:0213
2455580999029,30cyclictest0-21swapper/1121:04:013
245555799839,74cyclictest0-21swapper/521:03:5911
245557599825,76cyclictest0-21swapper/921:04:0115
2455590996161,0cyclictest3411-21Xorg21:03:596
2455548996059,1cyclictest3411-21Xorg21:04:018
2455545995857,1cyclictest3411-21Xorg21:04:001
245555799520,27cyclictest0-21swapper/523:47:0911
245555799520,27cyclictest0-21swapper/522:41:1511
245555799520,27cyclictest0-21swapper/522:08:1811
245555799520,27cyclictest0-21swapper/519:23:3311
245555799510,25cyclictest0-21swapper/519:34:3111
2455566995043,4cyclictest0-21swapper/720:16:4513
245555799500,49cyclictest0-21swapper/523:36:1011
245555799500,25cyclictest0-21swapper/521:46:2011
245555799500,25cyclictest0-21swapper/521:24:2211
245555799500,25cyclictest0-21swapper/520:18:2811
245555799500,25cyclictest0-21swapper/500:31:0411
245555799490,24cyclictest0-21swapper/522:52:1411
245555799480,23cyclictest0-21swapper/520:40:2511
2455592994443,1cyclictest3411-21Xorg21:04:017
245555799420,18cyclictest0-21swapper/520:51:2411
2455586994038,2cyclictest0-21swapper/1321:04:005
2455555993837,1cyclictest3411-21Xorg21:04:0010
2455566993737,0cyclictest0-21swapper/723:26:1513
2455542993630,1cyclictest0-21swapper/022:02:580
2455570993428,5cyclictest2395797-21snmpd21:35:1714
245556699345,29cyclictest0-21swapper/722:08:1513
2455577993332,1cyclictest0-21swapper/1022:33:192
2455566993333,0cyclictest0-21swapper/722:55:5013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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