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2026-06-19 - 18:03

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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 rack7slot7s.osadl.org (updated Fri Jun 19, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1106929683,9sleep00-21swapper/007:07:100
1094229272,9sleep20-21swapper/207:05:302
1096529164,9sleep30-21swapper/307:05:483
1109728864,13sleep10-21swapper/107:07:311
269312710,1sleep0161rcuc/010:20:270
140212480,0sleep20-21swapper/210:32:352
1138499260,1cyclictest0-21swapper/311:36:583
11374992523,2cyclictest0-21swapper/011:48:050
1138199240,24cyclictest0-21swapper/210:21:232
11379992418,2cyclictest4171-21diskmemload09:50:591
1137499240,24cyclictest0-21swapper/012:18:100
1138499231,0cyclictest0-21swapper/312:23:343
11381992321,1cyclictest0-21swapper/210:54:102
1137499233,1cyclictest7126-21apt-get09:50:140
1137499230,2cyclictest0-21swapper/010:58:250
1137499230,0cyclictest0-21swapper/009:48:080
11384992222,0cyclictest0-21swapper/312:27:023
1138499220,3cyclictest0-21swapper/311:45:093
1138499220,1cyclictest0-21swapper/312:39:503
1138499220,1cyclictest0-21swapper/311:43:433
1137999220,2cyclictest0-21swapper/111:14:491
11374992222,0cyclictest0-21swapper/009:22:350
1138499210,1cyclictest0-21swapper/311:21:463
1138499210,0cyclictest0-21swapper/312:16:213
1138499200,0cyclictest0-21swapper/309:22:483
1138199200,20cyclictest0-21swapper/212:17:322
1138199200,20cyclictest0-21swapper/211:15:302
1137999205,10cyclictest0-21swapper/111:30:121
11374992019,1cyclictest0-21swapper/011:28:430
1137499200,19cyclictest0-21swapper/012:39:330
1138499190,7cyclictest0-21swapper/310:42:073
1138499190,4cyclictest0-21swapper/309:30:323
1138499190,1cyclictest0-21swapper/311:00:233
11381991917,1cyclictest0-21swapper/212:14:082
1138199190,2cyclictest0-21swapper/207:45:142
1138199190,1cyclictest0-21swapper/209:12:072
1138199190,19cyclictest0-21swapper/210:56:552
1137999193,15cyclictest4171-21diskmemload12:25:041
1137499190,0cyclictest0-21swapper/009:43:330
1137499190,0cyclictest0-21swapper/009:43:320
1138499180,1cyclictest0-21swapper/311:11:593
1138199180,17cyclictest0-21swapper/210:06:192
11379991818,0cyclictest0-21swapper/111:46:141
11379991814,3cyclictest94-21kswapd009:37:321
1137999180,18cyclictest0-21swapper/111:39:111
11374991818,0cyclictest0-21swapper/011:51:460
1137499180,1cyclictest0-21swapper/011:02:180
203962170,0sleep30-21swapper/309:19:393
1138499170,2cyclictest0-21swapper/309:42:313
1138499170,2cyclictest0-21swapper/309:42:313
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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