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2025-11-20 - 21:33

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 Thu Nov 20, 2025 12:43:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2895999720,60cyclictest28498-21unixbench-2d09:30:330
2895999626,50cyclictest13324-21fschecks_count09:55:240
2895999430,47cyclictest5356-21aten_rbpower_en12:00:190
2895999020,36cyclictest0-21swapper/010:00:180
2895998825,52cyclictest2125-21ssh12:37:120
2895998626,47cyclictest21893-21ssh10:06:240
2895998623,50cyclictest26183-21idleruntime-cro11:45:060
289599861,60cyclictest0-21swapper/008:40:140
2895998521,48cyclictest0-21swapper/011:20:170
2895998520,55cyclictest1268-21taskset09:38:520
2895998429,39cyclictest20619-21diskstats12:20:210
2895998328,33cyclictest0-21swapper/010:40:170
2895998326,45cyclictest4086-21uptime07:10:340
2895998324,42cyclictest12916-21rm09:55:060
2895998322,48cyclictest0-21swapper/011:00:190
2895998322,41cyclictest32028-21grep10:20:320
2895998320,50cyclictest0-21swapper/009:25:050
2895998228,38cyclictest25911-21ssh10:12:280
2895998224,47cyclictest12224-21idleruntime-cro10:40:050
2895998219,55cyclictest0-21swapper/010:18:050
2895998216,49cyclictest0-21swapper/010:57:280
2895998123,43cyclictest27388-21ls08:15:340
2895998021,44cyclictest24708-21basename08:10:190
2895998018,53cyclictest11786-21sh12:08:560
289599797,52cyclictest0-21swapper/010:50:200
2895997926,38cyclictest5014-21taskset10:29:210
2895997925,12cyclictest31198-21grep08:25:500
2895997923,42cyclictest31846-21ssh12:34:460
2895997920,46cyclictest0-21swapper/009:25:240
2895997920,44cyclictest0-21swapper/012:25:560
2895997919,10cyclictest11391-21grep09:00:330
2895997918,46cyclictest13715-21rm11:26:010
2895997825,32cyclictest17207-21cron07:50:050
2895997823,32cyclictest29105-21cat08:20:320
2895997721,38cyclictest7303-21ssh10:31:470
2895997720,43cyclictest0-21swapper/011:57:150
2895997719,47cyclictest0-21swapper/011:37:270
2895997719,44cyclictest0-21swapper/011:48:520
2895997715,54cyclictest0-21swapper/012:17:480
2895997620,44cyclictest0-21swapper/007:41:200
218902760,2sleep10-21swapper/110:52:321
2895997523,40cyclictest3407-21ssh11:11:410
2895997520,43cyclictest0-21swapper/011:32:070
2895997520,43cyclictest0-21swapper/008:50:060
62122740,4sleep2289799cyclictest09:45:262
289899741,62cyclictest27288-21apt-get10:15:193
2895997427,26cyclictest22629-21apt08:05:050
2895997427,26cyclictest22629-21apt08:05:050
2895997425,11cyclictest8911-21ssh09:49:480
2895997421,40cyclictest19149-21ssh09:16:540
2895997417,43cyclictest0-21swapper/011:17:490
2895997322,38cyclictest646-21diskmemload11:08:510
2895997322,37cyclictest2554-21runrttasks08:36:490
2895997318,43cyclictest17685-21sh10:46:010
2895997317,41cyclictest19280-21aten_rbpower_cu07:55:170
2895997223,39cyclictest14339-21sh12:11:200
2895997223,39cyclictest14339-21sh12:11:200
2895997220,37cyclictest0-21swapper/007:36:090
2895997219,38cyclictest0-21swapper/009:41:570
2895997216,46cyclictest0-21swapper/011:54:590
2895997119,33cyclictest6157-21taskset07:18:320
2895997117,45cyclictest13534-21runrttasks09:08:410
179202710,1sleep30-21swapper/311:32:153
2895996918,42cyclictest1120-21runrttasks08:10:030
2895996917,42cyclictest0-21swapper/007:31:020
2895996819,34cyclictest15567-21taskset09:11:260
289899671,40cyclictest776-21ssh11:54:383
2895996619,33cyclictest0-21swapper/007:23:200
2895996619,30cyclictest0-21swapper/008:57:520
289899651,55cyclictest12763-21df10:40:223
289899651,46cyclictest27489-21/usr/sbin/munin08:15:353
289899651,44cyclictest7950irq/56-dwc_otg_09:22:303
2897996526,13cyclictest29739-21ssh10:18:082
289899641,51cyclictest25525-21ssh11:43:343
289899641,42cyclictest30094-21ssh12:31:333
2897996427,17cyclictest26685-21/usr/sbin/munin11:00:252
2895996425,25cyclictest9559-21runrttasks07:25:570
289899631,45cyclictest9053-21apt-get09:50:113
289899631,43cyclictest8631-21apt-get11:20:183
2897996329,13cyclictest24942-21fschecks_count08:10:222
2895996322,28cyclictest8044-21seq08:52:470
2895996322,28cyclictest8044-21seq08:52:470
289899622,38cyclictest7850irq/56-dwc_otg_10:15:063
289899621,51cyclictest22002-21ssh12:21:133
289899621,40cyclictest18932-21ssh10:48:553
2895996223,21cyclictest679-21runrttasks08:31:110
2895996212,41cyclictest0-21swapper/007:51:400
289899611,52cyclictest11947-21ssh12:09:223
289899611,50cyclictest19224-21ssh10:03:393
289899611,47cyclictest15183-21sh11:29:203
289899611,45cyclictest24229-21sshd08:07:413
2897996130,12cyclictest28582-21awk09:30:342
2897996127,17cyclictest24961-21/usr/sbin/munin09:25:312
2897996126,16cyclictest32059-21sh11:52:072
2897996124,12cyclictest3912-21wc12:40:062
289899603,10cyclictest7950irq/56-dwc_otg_07:50:173
289899601,46cyclictest26944-21ssh11:00:243
289899601,44cyclictest31816-21ssh11:06:013
289899601,43cyclictest1273-21ssh09:38:533
289899601,41cyclictest3796-21ssh11:57:533
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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