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2025-12-09 - 13:59

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

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 rack7slot3s.osadl.org (updated Tue Dec 09, 2025 00:43:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2004722570,2sleep30-21swapper/319:05:293
2201021730,2sleep02182199cyclictest21:37:200
21821998072,2cyclictest0-21swapper/023:06:060
170712770,1sleep20-21swapper/220:25:362
245512750,4sleep324554-21missed_timers20:45:383
78342740,5sleep37837-21fschecks_count20:00:343
21821997412,46cyclictest101ktimersoftd/022:20:150
2182199736,40cyclictest0-21swapper/020:25:300
21821997035,12cyclictest0-21swapper/000:35:160
21821996810,52cyclictest101ktimersoftd/023:25:150
2182199673,31cyclictest0-21swapper/019:10:180
2182199673,31cyclictest0-21swapper/019:10:180
2182399666,19cyclictest7850irq/56-dwc_otg_23:15:312
2182199664,5cyclictest101ktimersoftd/023:30:430
2182199662,40cyclictest0-21swapper/022:30:290
21821996555,7cyclictest0-21swapper/023:25:300
204362650,2sleep30-21swapper/321:35:373
21821996438,10cyclictest101ktimersoftd/022:00:320
21821996434,19cyclictest101ktimersoftd/019:55:150
21821996345,4cyclictest7850irq/56-dwc_otg_23:00:260
2182199613,30cyclictest0-21swapper/021:15:280
304732600,2sleep20-21swapper/221:48:492
21821996024,10cyclictest0-21swapper/020:55:330
2182199602,39cyclictest18396-21/usr/sbin/munin20:30:330
21821996014,43cyclictest12942-21latency_hist22:50:160
2182199601,40cyclictest0-21swapper/020:45:210
21821996012,33cyclictest30039-21unixbench_multi00:35:440
213832602,51sleep10-21swapper/119:08:071
2182199596,39cyclictest0-21swapper/019:55:210
2182199596,39cyclictest0-21swapper/019:55:210
21821995945,3cyclictest0-21swapper/021:46:190
21821995937,5cyclictest15038-21ssh00:15:430
21821995927,17cyclictest0-21swapper/022:10:280
2182199592,36cyclictest11025-21fschecks_count22:05:320
2182199587,25cyclictest0-21swapper/000:25:280
21821995820,8cyclictest32412-21sh21:50:410
2182199581,35cyclictest24681-21/usr/sbin/munin21:40:410
2182199581,35cyclictest24681-21/usr/sbin/munin21:40:410
2182199581,17cyclictest0-21swapper/023:15:310
2182199581,11cyclictest0-21swapper/019:20:280
21821995810,26cyclictest6336-21grep22:40:420
2182199578,25cyclictest0-21swapper/020:20:270
21821995733,5cyclictest9458-21ls21:20:450
21821995717,18cyclictest3793-21latency_hist19:50:160
2182199563,39cyclictest22339-21/usr/sbin/munin22:20:260
21821995629,5cyclictest7850irq/56-dwc_otg_21:55:210
325542550,2sleep20-21swapper/223:56:152
21821995535,10cyclictest0-21swapper/023:39:160
2182199552,31cyclictest0-21swapper/021:10:320
2182199552,31cyclictest0-21swapper/021:10:320
2182199545,34cyclictest21431-21chrt20:36:050
198072540,2sleep30-21swapper/322:15:473
3672530,2sleep20-21swapper/221:50:462
21821995338,4cyclictest14268-21taskset20:16:530
21821995331,4cyclictest7950irq/56-dwc_otg_22:26:420
21821995329,4cyclictest2408-21/usr/sbin/munin00:00:310
2182199531,43cyclictest12290-21unixbench_multi20:10:430
218152530,5sleep20-21swapper/219:10:172
218152530,5sleep20-21swapper/219:10:172
249002520,2sleep3381ktimersoftd/323:46:223
21821995229,10cyclictest0-21swapper/023:50:270
2182199522,28cyclictest30972-21/usr/sbin/munin23:55:420
21821995221,15cyclictest29620-21fschecks_time21:00:350
2182199521,30cyclictest13285-21ls21:25:430
2182199521,28cyclictest0-21swapper/023:10:430
2182199521,28cyclictest0-21swapper/023:10:430
2182399517,14cyclictest0-21swapper/219:20:282
2182199518,10cyclictest7850irq/56-dwc_otg_23:45:280
21821995133,10cyclictest0-21swapper/000:24:060
21821995133,10cyclictest0-21swapper/000:24:060
21821995129,5cyclictest101ktimersoftd/023:00:150
21821995126,5cyclictest6725-21grep00:05:330
2182199505,34cyclictest0-21swapper/020:00:410
21821995033,4cyclictest21351-21ssh23:42:030
21821995024,3cyclictest0-21swapper/019:30:270
2182199501,24cyclictest26894-21unixbench_singl20:50:430
21822994912,19cyclictest0-21swapper/119:10:181
21822994912,19cyclictest0-21swapper/119:10:181
2182199499,37cyclictest101ktimersoftd/020:05:450
2182199499,18cyclictest0-21swapper/022:35:410
2182199499,18cyclictest0-21swapper/022:35:410
21821994931,11cyclictest0-21swapper/019:25:250
21821994926,11cyclictest0-21swapper/021:35:000
21821994922,15cyclictest1116-21cat19:40:420
21821994916,16cyclictest10474-21ssh00:10:330
2182299487,3cyclictest0-21swapper/119:20:281
21822994821,5cyclictest653550wget00:05:311
2182499473,26cyclictest0-21swapper/319:10:183
2182499473,26cyclictest0-21swapper/319:10:183
2182299477,5cyclictest0-21swapper/120:25:301
2182299475,5cyclictest32466-21ssh23:15:301
2182199475,20cyclictest0-21swapper/022:55:150
21821994717,22cyclictest0-21swapper/019:16:580
2182399467,25cyclictest0-21swapper/219:25:282
2182399467,25cyclictest0-21swapper/200:00:292
21822994616,5cyclictest21-21rcuc/123:30:361
2182199465,19cyclictest0-21swapper/020:40:290
21821994623,5cyclictest9-21ksoftirqd/021:05:340
2182199451,41cyclictest101ktimersoftd/019:38:310
2182399447,25cyclictest0-21swapper/223:35:292
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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