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2026-05-28 - 00:35

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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.

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 rack4slot1s.osadl.org (updated Wed May 27, 2026 12:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
260062700,2sleep129-21ksoftirqd/108:12:551
260062700,2sleep129-21ksoftirqd/108:12:551
12962670,3chrt0-21swapper/308:32:593
12962670,3chrt0-21swapper/308:32:593
295082650,3chrt0-21swapper/311:17:363
295082650,3chrt0-21swapper/311:17:363
273772650,3sleep10-21swapper/109:42:551
273772650,3sleep10-21swapper/109:42:551
273772650,3sleep10-21swapper/109:42:551
257672630,2chrt0-21swapper/312:32:503
257672630,2chrt0-21swapper/312:32:503
222772540,2sleep20-21swapper/208:02:552
222772540,2sleep20-21swapper/208:02:552
163712540,2sleep016520-21cat12:07:510
163712540,2sleep016520-21cat12:07:510
6712520,2sleep0815-21sed09:57:590
150682510,2sleep30-21swapper/310:37:493
150682510,2sleep30-21swapper/310:37:493
305299493,29cyclictest10847-21latency07:32:520
305299493,29cyclictest10847-21latency07:32:520
278412480,4sleep30-21swapper/312:37:523
278412480,4sleep30-21swapper/312:37:523
305299471,7cyclictest21406-21chrt12:21:570
305299471,7cyclictest21406-21chrt12:21:570
305299471,6cyclictest30423-21chrt08:24:320
305299471,6cyclictest30423-21chrt08:24:320
305299471,6cyclictest30423-21chrt08:24:320
305299471,6cyclictest21931-21taskset10:56:150
305299471,6cyclictest21931-21taskset10:56:150
208852470,3chrt0-21swapper/110:52:501
305299461,6cyclictest16795-21seq09:14:530
305299461,6cyclictest16795-21seq09:14:530
305299451,6cyclictest9193-21chrt08:53:420
305299451,6cyclictest9193-21chrt08:53:420
305299441,7cyclictest9751-21chrt07:28:200
305299441,7cyclictest9751-21chrt07:28:200
305299441,6cyclictest7959-21seq07:24:380
305299441,3cyclictest0-21swapper/010:27:290
305299441,3cyclictest0-21swapper/010:27:290
305299441,3cyclictest0-21swapper/010:27:290
305299440,4cyclictest24183-21taskset09:33:420
305299440,4cyclictest24183-21taskset09:33:420
305299440,4cyclictest24183-21taskset09:33:420
186302440,2sleep20-21swapper/210:47:492
186302440,2sleep20-21swapper/210:47:492
186302440,2sleep20-21swapper/210:47:492
305299431,6cyclictest31802-21seq09:55:410
305299431,6cyclictest31802-21seq09:55:410
305299431,3cyclictest0-21swapper/010:40:000
305299431,3cyclictest0-21swapper/010:40:000
305299431,3cyclictest0-21swapper/010:29:590
305299431,3cyclictest0-21swapper/010:29:590
305299431,3cyclictest0-21swapper/008:51:560
305299431,3cyclictest0-21swapper/008:51:560
305299430,6cyclictest26760-21chrt12:33:390
305299430,6cyclictest26760-21chrt12:33:390
305299421,6cyclictest27500-21seq11:10:460
305299421,6cyclictest27500-21seq11:10:460
305299421,3cyclictest0-21swapper/012:01:310
305299421,3cyclictest0-21swapper/012:01:310
305299421,3cyclictest0-21swapper/012:01:310
305299421,3cyclictest0-21swapper/010:33:590
305299421,3cyclictest0-21swapper/010:33:590
305299421,3cyclictest0-21swapper/008:16:260
305299421,3cyclictest0-21swapper/008:16:260
305299411,3cyclictest0-21swapper/012:27:020
305299411,3cyclictest0-21swapper/012:27:020
305299411,3cyclictest0-21swapper/011:46:010
305299411,3cyclictest0-21swapper/011:46:010
305299411,3cyclictest0-21swapper/011:46:010
305299411,3cyclictest0-21swapper/010:14:290
305299411,3cyclictest0-21swapper/010:14:290
305299411,3cyclictest0-21swapper/009:41:280
305299411,3cyclictest0-21swapper/009:41:280
305299411,3cyclictest0-21swapper/009:41:280
305299411,3cyclictest0-21swapper/009:41:280
305299401,3cyclictest0-21swapper/010:59:150
305299401,3cyclictest0-21swapper/010:59:150
305299401,3cyclictest0-21swapper/010:47:300
305299401,3cyclictest0-21swapper/010:47:300
305299401,3cyclictest0-21swapper/010:47:300
305299401,3cyclictest0-21swapper/009:24:570
305299401,3cyclictest0-21swapper/009:24:570
305299401,3cyclictest0-21swapper/009:01:270
305299401,3cyclictest0-21swapper/009:01:270
305299401,3cyclictest0-21swapper/007:55:250
305299401,3cyclictest0-21swapper/007:55:250
305299392,34cyclictest13243-21latency_hist09:07:380
305299392,34cyclictest13243-21latency_hist09:07:380
305299391,3cyclictest0-21swapper/010:22:290
305299391,3cyclictest0-21swapper/010:22:290
305299391,3cyclictest0-21swapper/010:10:590
305299391,3cyclictest0-21swapper/010:10:590
305299391,3cyclictest0-21swapper/010:05:290
305299391,3cyclictest0-21swapper/010:05:290
305299391,3cyclictest0-21swapper/009:45:280
305299391,3cyclictest0-21swapper/009:45:280
305299391,3cyclictest0-21swapper/009:45:280
305299391,3cyclictest0-21swapper/009:21:570
305299391,3cyclictest0-21swapper/009:21:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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