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2026-01-11 - 16:43

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 Sun Jan 11, 2026 12:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2949999902,80cyclictest27851-21unixbench_multi11:30:430
152522840,2sleep00-21swapper/009:30:170
29499998227,3cyclictest0-21swapper/010:05:450
29499998227,3cyclictest0-21swapper/010:05:450
29499998214,5cyclictest28157-21fschecks_count08:35:350
29499997714,4cyclictest25876-21latency_hist08:30:170
29499997320,13cyclictest15742-21latency_hist11:00:170
9462710,6sleep12950099cyclictest07:20:331
92582710,1sleep30-21swapper/310:40:403
298622710,2sleep20-21swapper/207:10:362
134722710,2sleep10-21swapper/107:55:311
35052700,2sleep30-21swapper/308:55:423
29499997017,11cyclictest0-21swapper/009:25:170
231052700,2sleep00-21swapper/011:20:180
29499996620,23cyclictest11922-21sh10:50:170
29499996620,23cyclictest11922-21sh10:50:170
29499996616,12cyclictest1125-21runrttasks08:51:140
29499996616,12cyclictest1125-21runrttasks08:51:140
12062640,2sleep10-21swapper/110:20:171
2949999615,9cyclictest0-21swapper/010:15:280
113332610,2sleep10-21swapper/110:45:451
113332610,2sleep10-21swapper/110:45:451
29501996022,13cyclictest18158-21irqstats11:05:372
29501996022,13cyclictest18158-21irqstats11:05:372
29501996021,18cyclictest0-21swapper/209:20:172
29501996018,23cyclictest15943-21aten_rbpower_en11:00:312
2949999601,32cyclictest0-21swapper/008:45:300
2949999596,25cyclictest0-21swapper/011:40:290
2949999596,25cyclictest0-21swapper/011:40:290
2949999592,29cyclictest0-21swapper/009:50:270
29501995824,17cyclictest24137-21latency_hist08:25:172
29501995819,16cyclictest3320-21sed11:55:172
2949999588,10cyclictest7750irq/56-dwc_otg12:00:280
29501995722,18cyclictest26916-21/usr/sbin/munin11:30:302
2949999572,33cyclictest8618-21aten_rbpower_en10:40:300
29501995625,11cyclictest26517-21apt-get10:00:282
29501995622,19cyclictest30515-21gzip08:40:422
29501995523,17cyclictest14334-21/usr/sbin/munin12:25:472
2949999555,25cyclictest0-21swapper/007:10:290
2949999553,6cyclictest0-21swapper/009:40:280
29499995512,22cyclictest9760-21aten_rbpower_cu07:45:300
29501995419,12cyclictest5748-21seq07:33:442
2949999544,34cyclictest21083-21awk11:15:160
2949999542,31cyclictest21707-21grep08:15:460
2949999541,50cyclictest3268-21grep07:25:420
29501995322,11cyclictest3462-21/usr/sbin/munin11:55:382
2949999539,26cyclictest30847-21grep08:40:450
29499995333,6cyclictest7950irq/56-dwc_otg_11:35:410
2949999532,32cyclictest1751-21tr11:50:310
29499995310,30cyclictest25035-21aten_rbpower_vo11:25:310
292052533,12sleep00-21swapper/007:09:580
2950299527,28cyclictest0-21swapper/312:20:273
29501995219,18cyclictest13867-21df09:25:302
29501995214,19cyclictest7850irq/56-dwc_otg_10:05:382
29501995214,19cyclictest7850irq/56-dwc_otg_10:05:382
29501995130,12cyclictest15472-21apt-get09:30:302
29501995114,18cyclictest7950irq/56-dwc_otg_07:35:362
2949999512,28cyclictest22431-21grep11:15:460
2949999512,27cyclictest23402-21sshd08:20:430
2950299507,24cyclictest0-21swapper/308:05:303
2950299507,24cyclictest0-21swapper/308:05:303
29502995013,19cyclictest13153-21apt-get12:25:283
29501995020,11cyclictest29998-21chrt11:38:472
2949999502,28cyclictest13738-21latency_hist10:55:160
2950299497,25cyclictest0-21swapper/311:35:303
2950299497,25cyclictest0-21swapper/307:45:303
29502994916,17cyclictest15506-21/usr/sbin/munin09:30:303
29501994915,20cyclictest26301-21/usr/sbin/munin08:30:342
2949999498,24cyclictest13-21rcuc/007:40:280
2949999492,23cyclictest0-21swapper/012:10:420
2949999491,29cyclictest5816-21switchtime10:30:420
2950299487,25cyclictest0-21swapper/307:55:293
29502994825,7cyclictest13664-21apt-get09:25:283
29502994817,11cyclictest18261-21memory11:05:393
29502994817,11cyclictest18261-21memory11:05:393
29502994816,12cyclictest30226-21/usr/sbin/munin08:40:373
29502994811,20cyclictest4874-21taskset11:58:263
2950199487,26cyclictest0-21swapper/212:20:272
29501994820,17cyclictest11810-21sshd10:49:022
29501994820,17cyclictest11810-21sshd10:49:022
29501994819,12cyclictest11194-21latency_hist12:20:182
29501994819,12cyclictest11194-21latency_hist12:20:182
29501994818,14cyclictest8616-21wget10:40:302
29501994813,9cyclictest7850irq/56-dwc_otg_12:09:242
29501994813,21cyclictest31642-21taskset11:41:372
29501994813,21cyclictest31642-21taskset11:41:372
29501994813,10cyclictest7850irq/56-dwc_otg_09:49:492
2950099481,5cyclictest7750irq/56-dwc_otg08:10:271
2949999483,28cyclictest0-21swapper/009:30:290
29499994828,3cyclictest0-21swapper/008:15:160
29499994825,4cyclictest0-21swapper/009:10:380
29499994824,5cyclictest7850irq/56-dwc_otg_07:55:170
29499994820,5cyclictest435-21cron12:10:170
29499994817,21cyclictest0-21swapper/012:32:090
2949999481,44cyclictest12185-21wc12:20:390
2949999481,18cyclictest31091-21timerandwakeup10:10:440
2950299477,26cyclictest0-21swapper/309:50:303
2950299477,25cyclictest0-21swapper/311:20:293
29502994720,15cyclictest28743-21if_eth010:05:353
29502994720,15cyclictest28743-21if_eth010:05:353
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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