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2025-11-13 - 19:20

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 13, 2025 12:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20565991165,61cyclictest0-21swapper/011:40:150
20565991066,72cyclictest0-21swapper/010:05:080
190972880,6sleep1221ktimersoftd/110:24:591
2056599841,64cyclictest21137-21grep09:40:300
7142820,2sleep20-21swapper/212:14:382
2056599826,22cyclictest0-21swapper/007:15:160
2056599811,63cyclictest15551-21latency_hist10:20:010
20565997924,36cyclictest18765-21systemd-cgroups11:09:180
2056599792,40cyclictest0-21swapper/007:25:130
2056599792,40cyclictest0-21swapper/007:25:130
2056599752,64cyclictest0-21swapper/009:18:400
2056599751,15cyclictest0-21swapper/008:20:180
2056599741,62cyclictest0-21swapper/008:15:280
2056599740,14cyclictest0-21swapper/012:37:340
17762740,2sleep20-21swapper/210:00:122
17762740,2sleep20-21swapper/210:00:122
2056799733,30cyclictest31748-21rm09:10:122
2056599731,58cyclictest0-21swapper/011:03:300
2056599702,46cyclictest0-21swapper/009:20:310
2056599702,46cyclictest0-21swapper/009:20:310
2056599701,29cyclictest0-21swapper/007:50:140
2056599701,29cyclictest0-21swapper/007:50:140
2056599701,11cyclictest0-21swapper/011:12:270
2056599699,14cyclictest0-21swapper/010:43:230
2056599692,19cyclictest0-21swapper/011:34:180
2056599692,17cyclictest0-21swapper/010:20:230
48432670,2sleep20-21swapper/209:17:132
2056599673,9cyclictest8399-21ssh10:55:170
2056599673,13cyclictest0-21swapper/009:27:430
20565996714,2cyclictest0-21swapper/011:49:180
20565996710,10cyclictest0-21swapper/009:49:190
20568996615,10cyclictest7950irq/56-dwc_otg_10:55:163
2056599664,28cyclictest0-21swapper/010:25:140
2056599663,13cyclictest0-21swapper/012:15:540
2056599661,52cyclictest27801-21cron09:00:010
2056599661,19cyclictest10027-21aten_rbpower_cu08:10:150
191422666,10sleep30-21swapper/307:05:233
20565996515,4cyclictest7750irq/56-dwc_otg09:35:150
20565996512,45cyclictest0-21swapper/009:05:300
2056599648,13cyclictest0-21swapper/007:13:520
2056599647,15cyclictest7566-21sh11:38:020
2056599645,10cyclictest0-21swapper/011:57:490
2056599645,10cyclictest0-21swapper/011:57:490
20565996416,4cyclictest7850irq/56-dwc_otg_10:14:150
20565996416,4cyclictest7850irq/56-dwc_otg_10:14:150
20565996411,9cyclictest779-21rm11:29:260
2056799633,10cyclictest7850irq/56-dwc_otg_10:20:162
2056599632,18cyclictest0-21swapper/010:02:550
2056599632,18cyclictest0-21swapper/010:02:550
2056599632,14cyclictest0-21swapper/009:12:560
20565996320,34cyclictest0-21swapper/007:41:330
20565996318,33cyclictest28149-21ssh11:20:500
2056599631,5cyclictest9916-21ssh12:25:330
2056599631,5cyclictest9916-21ssh12:25:330
20565996311,8cyclictest29556-21ssh12:09:160
2056599631,13cyclictest0-21swapper/008:30:280
2056899629,9cyclictest7950irq/56-dwc_otg_11:40:133
2056599623,16cyclictest0-21swapper/012:12:260
2056599622,19cyclictest0-21swapper/010:37:390
2056599621,13cyclictest23364-21fschecks_time10:30:210
2056599621,13cyclictest23364-21fschecks_time10:30:210
2056599617,10cyclictest0-21swapper/010:51:400
20565996118,3cyclictest0-21swapper/008:02:090
2056599604,14cyclictest1120-21runrttasks07:45:130
2056599602,7cyclictest7750irq/56-dwc_otg08:10:010
2056599602,31cyclictest14050-21grep09:30:310
2056599602,21cyclictest0-21swapper/009:54:330
20565996012,9cyclictest0-21swapper/009:57:210
2056599601,12cyclictest0-21swapper/011:15:250
20565996011,11cyclictest0-21swapper/012:00:480
200122603,12sleep10-21swapper/107:06:261
2056599598,5cyclictest5723-21grep12:20:240
2056599592,14cyclictest0-21swapper/012:34:320
2056599591,28cyclictest24464-21fschecks_count07:20:200
2056599591,11cyclictest0-21swapper/010:49:310
2056699589,6cyclictest7950irq/56-dwc_otg_12:05:141
2056599582,18cyclictest0-21swapper/007:57:160
20565995717,10cyclictest0-21swapper/008:40:150
20565995717,10cyclictest0-21swapper/008:40:150
2056599571,52cyclictest0-21swapper/008:35:170
2056599571,15cyclictest0-21swapper/011:51:140
2056599552,21cyclictest0-21swapper/009:00:020
2056599551,20cyclictest0-21swapper/007:30:070
172102550,2sleep10-21swapper/109:35:281
230312540,2sleep20-21swapper/212:00:132
2056899546,21cyclictest0-21swapper/310:05:083
2056799545,5cyclictest0-21swapper/211:30:132
2056599541,14cyclictest0-21swapper/008:54:440
2056599531,3cyclictest0-21swapper/007:39:170
2056799523,5cyclictest16311-21ssh12:35:142
2056599526,4cyclictest7750irq/56-dwc_otg08:25:380
2056699514,5cyclictest0-21swapper/107:45:141
2056699511,9cyclictest7750irq/56-dwc_otg08:00:131
2056799503,11cyclictest23104-21kworker/u8:012:05:142
2056699507,27cyclictest31769-21ssh09:10:151
2056599508,11cyclictest0-21swapper/008:49:100
200942493,39sleep00-21swapper/007:07:300
2056699475,7cyclictest7750irq/56-dwc_otg09:05:161
2056899467,4cyclictest0-21swapper/312:05:243
2056899466,26cyclictest0-21swapper/310:35:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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