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2025-11-23 - 20:58

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 Nov 23, 2025 12:43:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2047121740,2sleep30-21swapper/307:05:283
226821520,6sleep12172899cyclictest07:45:251
226821520,6sleep12172899cyclictest07:45:251
2061421260,5sleep20-21swapper/207:05:312
21727999316,61cyclictest14346-21wc11:00:340
112812890,4sleep32173099cyclictest10:11:563
112812890,4sleep32173099cyclictest10:11:563
21727998824,48cyclictest27709-21aten_rbpower_po12:05:220
21727998823,50cyclictest10273-21ssh09:24:450
21727998823,50cyclictest10273-21ssh09:24:450
21727998522,41cyclictest7353-21tr08:00:170
207232850,2sleep0101ktimersoftd/009:40:130
15862850,4sleep21589-21unixbench_singl09:10:362
21727998424,47cyclictest0-21swapper/008:55:180
21727998419,44cyclictest13964-21awk09:30:060
149412840,3sleep014944-21idleruntime08:20:260
21727998321,45cyclictest32602-21grep12:10:370
21727998223,40cyclictest27605-21aten_rbpower_vo09:50:260
21727998217,50cyclictest25797-21ssh09:46:220
21727998126,41cyclictest32144-21chrt09:05:590
21727998117,45cyclictest0-21swapper/011:20:250
146092810,5sleep22172999cyclictest12:30:272
2172799807,63cyclictest0-21swapper/010:05:130
21727997921,40cyclictest9597-21if_wlan008:05:250
2172799784,38cyclictest0-21swapper/010:30:180
21727997817,44cyclictest28821-21wc10:35:370
21727997814,42cyclictest0-21swapper/009:37:560
173822780,3sleep20-21swapper/209:35:072
127972780,2sleep20-21swapper/209:27:222
285622770,5sleep22172999cyclictest10:35:342
21727997716,50cyclictest17595-21missed_timers11:50:300
21727997619,41cyclictest14225-21ssh12:30:220
21727997619,30cyclictest23613-21latency_hist08:45:080
21727997617,42cyclictest2249-21ssh10:00:190
21727997518,39cyclictest19598-21taskset11:09:050
21727997518,31cyclictest5466-21rm11:34:300
21727997319,38cyclictest3163-21ssh09:14:180
21727997316,40cyclictest0-21swapper/010:55:250
21727997316,40cyclictest0-21swapper/008:50:240
21727997316,40cyclictest0-21swapper/008:50:240
21727997314,56cyclictest0-21swapper/011:40:060
21727997311,36cyclictest140-21systemd-journal11:14:470
21727997219,50cyclictest25331-21cat08:50:070
21727997219,50cyclictest25331-21cat08:50:070
21727997217,42cyclictest16052-21sh11:48:510
21727997217,40cyclictest28457-21taskset07:26:490
21727997215,43cyclictest0-21swapper/012:35:570
21727997214,46cyclictest15144-21awk09:30:330
21727997213,41cyclictest0-21swapper/012:16:260
21729997122,6cyclictest7950irq/56-dwc_otg_11:15:192
21727997123,39cyclictest23705-21latency_hist12:00:070
21727997123,39cyclictest23705-21latency_hist12:00:070
21727997118,39cyclictest22339-21ssh10:27:060
21727997117,41cyclictest0-21swapper/011:25:260
21727997116,40cyclictest0-21swapper/010:10:460
21727997116,40cyclictest0-21swapper/010:10:460
21727997115,41cyclictest5651-21rm09:17:010
120162710,2sleep30-21swapper/308:10:353
21727997020,34cyclictest16646-21chrt10:20:180
21727997017,40cyclictest6950-21ssh10:50:320
21727997015,44cyclictest1825-21latency_hist07:45:080
21727997015,44cyclictest0-21swapper/007:34:520
21727997015,43cyclictest0-21swapper/010:18:540
2172899692,6cyclictest7750irq/56-dwc_otg09:30:211
21727996916,39cyclictest0-21swapper/007:55:040
21727996914,42cyclictest0-21swapper/011:40:100
21727996913,43cyclictest0-21swapper/009:00:350
21727996912,49cyclictest0-21swapper/008:36:550
269562680,3sleep3381ktimersoftd/307:25:073
21727996822,36cyclictest5865-21tune2fs07:55:260
21727996816,37cyclictest31387-21rm10:40:210
80312670,1sleep20-21swapper/210:51:562
21727996716,38cyclictest639-21ssh09:57:150
21727996716,38cyclictest639-21ssh09:57:150
2172799671,49cyclictest7519-21grep12:20:350
211982670,2sleep30-21swapper/312:39:263
21727996621,24cyclictest21742-21/usr/sbin/munin07:10:280
21727996617,35cyclictest12769-21ssh12:27:560
21727996616,36cyclictest0-21swapper/010:49:260
21727996614,35cyclictest24850-21sshd07:16:560
21727996613,40cyclictest0-21swapper/007:37:240
21727996612,38cyclictest0-21swapper/008:26:240
2172899656,10cyclictest7950irq/56-dwc_otg_08:00:281
2172899653,5cyclictest7750irq/56-dwc_otg10:35:071
2172799656,51cyclictest0-21swapper/008:15:210
307472640,3sleep20-21swapper/211:24:412
21727996417,32cyclictest26212-21rm11:17:360
21727996416,35cyclictest0-21swapper/008:10:250
2172899635,5cyclictest10998-21unixbench_singl11:40:371
2172899632,5cyclictest0-21swapper/108:50:081
2172899632,5cyclictest0-21swapper/108:50:081
21727996323,21cyclictest3485-21sshd07:49:550
21727996323,21cyclictest3485-21sshd07:49:550
21727996314,33cyclictest0-21swapper/007:22:010
21727996313,36cyclictest0-21swapper/012:02:300
21727996313,29cyclictest1120-21runrttasks08:34:170
2172899605,26cyclictest7750irq/56-dwc_otg08:40:201
2172899604,11cyclictest31350-21ssh12:10:201
21728996017,35cyclictest10312-21cat10:55:291
21728996014,11cyclictest7950irq/56-dwc_otg_09:55:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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