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2025-09-19 - 00:14

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 Thu Sep 18, 2025 12:44:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
103721450,2sleep30-21swapper/308:53:003
103721450,2sleep30-21swapper/308:53:003
2096121360,2sleep1281ktimers/112:38:021
2096121360,2sleep1281ktimers/112:38:021
1148121350,2chrt0-21swapper/212:12:552
1148121350,2chrt0-21swapper/212:12:552
1977921300,2sleep10-21swapper/109:42:591
1977921300,2sleep10-21swapper/109:42:591
2885121250,2sleep028849-21irqstats08:42:520
2885121250,2sleep028849-21irqstats08:42:520
159621120,4sleep10-21swapper/108:57:411
159621120,4sleep10-21swapper/108:57:411
224221090,2chrt0-21swapper/207:32:482
224221090,2chrt0-21swapper/207:32:482
1869021020,1sleep30-21swapper/308:17:353
1869021020,1sleep30-21swapper/308:17:353
2522821000,2chrt25226-21bingrep08:32:521
2522821000,2chrt25226-21bingrep08:32:521
267682980,3chrt0-21swapper/211:27:562
267682980,3chrt0-21swapper/211:27:562
231852670,3chrt0-21swapper/311:17:563
231852670,3chrt0-21swapper/311:17:563
231852670,3chrt0-21swapper/311:17:563
169692670,2sleep10-21swapper/111:02:511
169692670,2sleep10-21swapper/111:02:511
186102660,2chrt18608-21date09:42:351
186102660,2chrt18608-21date09:42:351
184742640,1chrt480-21sshd08:15:110
184742640,1chrt480-21sshd08:15:110
55892610,3sleep30-21swapper/310:32:503
55892610,3sleep30-21swapper/310:32:503
252802610,3chrt0-21swapper/308:32:543
252802610,3chrt0-21swapper/308:32:543
157302600,2sleep30-21swapper/308:07:553
157302600,2sleep30-21swapper/308:07:553
107012600,2sleep20-21swapper/212:12:422
286332590,1sleep2351rcuc/210:07:532
286332590,1sleep2351rcuc/210:07:532
2682399531,12cyclictest5376-21chrt10:32:470
2682399531,12cyclictest5376-21chrt10:32:470
188902530,3chrt0-21swapper/209:42:442
188902530,3chrt0-21swapper/209:42:442
188152530,3sleep126821-21cyclictest08:17:411
188152530,3sleep126821-21cyclictest08:17:411
131862510,2sleep20-21swapper/209:27:492
131862510,2sleep20-21swapper/209:27:492
121112490,2sleep112113-21sshd12:13:471
121112490,2sleep112113-21sshd12:13:471
26823994820,13cyclictest55150irq/47-eth011:02:470
120272440,3sleep30-21swapper/307:57:573
120272440,3sleep30-21swapper/307:57:573
26823994318,23cyclictest19243-21gltestperf09:42:530
26823994318,23cyclictest19243-21gltestperf09:42:530
112592420,2sleep111278-21apt-get09:22:461
112592420,2sleep111278-21apt-get09:22:461
45482400,3sleep30-21swapper/307:37:563
302422390,2sleep20-21swapper/211:37:492
302422390,2sleep20-21swapper/211:37:492
305992380,1sleep030618-21apt-get07:22:460
305992380,1sleep030618-21apt-get07:22:460
26824993629,5cyclictest24110-21idleruntime-cro11:22:351
26824993629,5cyclictest24110-21idleruntime-cro11:22:351
26824993629,5cyclictest24110-21idleruntime-cro11:22:351
26823993520,12cyclictest0-21swapper/010:57:530
26824993430,2cyclictest0-21swapper/108:27:341
26824993430,2cyclictest0-21swapper/108:27:341
87552330,3sleep30-21swapper/309:13:023
87552330,3sleep30-21swapper/309:13:023
54332330,3sleep30-21swapper/311:57:523
54332330,3sleep30-21swapper/311:57:523
26824993327,4cyclictest22252-21latency_hist11:17:351
26824993327,4cyclictest22252-21latency_hist11:17:351
26824993224,6cyclictest24350-21find11:22:471
26824993224,6cyclictest24350-21find11:22:471
129202320,2sleep012918-21apt09:27:350
129202320,2sleep012918-21apt09:27:350
195502310,2sleep20-21swapper/211:07:582
26824993025,2cyclictest0-21swapper/108:32:351
26824993023,5cyclictest9967-21kernelversion07:52:521
26824993023,5cyclictest9967-21kernelversion07:52:521
26824993022,6cyclictest4481-21unixbench_singl11:53:011
26824993022,6cyclictest4481-21unixbench_singl11:53:011
26823993025,3cyclictest26821-21cyclictest07:42:510
26823993025,3cyclictest26821-21cyclictest07:42:510
26823993016,11cyclictest0-21swapper/012:22:530
26823993016,11cyclictest0-21swapper/012:22:530
26824992924,3cyclictest16809-21latency_hist08:12:341
26824992924,3cyclictest16809-21latency_hist08:12:341
26824992922,5cyclictest15285-21kernelversion10:57:561
26824992922,5cyclictest15285-21kernelversion10:57:561
26824992920,7cyclictest0-21swapper/109:52:481
26824992920,7cyclictest0-21swapper/109:52:481
26823992922,5cyclictest26821-21cyclictest09:47:550
26823992922,5cyclictest26821-21cyclictest09:47:550
26823992915,12cyclictest0-21swapper/011:52:500
26823992915,12cyclictest0-21swapper/011:52:500
26824992824,3cyclictest31401-21timerandwakeup08:48:011
26824992824,3cyclictest31401-21timerandwakeup08:48:011
26824992823,3cyclictest3873-21gltestperf09:02:481
26824992822,5cyclictest11521-21kernelversion10:47:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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