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2026-05-15 - 20:00

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 Fri May 15, 2026 12:43:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
279189911123,28cyclictest0-21swapper/016:31:020
27919991025,79cyclictest0-21swapper/116:31:011
2791899986,48cyclictest0-21swapper/016:41:130
35412840,3sleep23539-21grep20:21:252
27919998211,53cyclictest0-21swapper/119:06:201
263482810,14sleep17950irq/56-dwc_otg_21:28:231
250552800,2sleep22792099cyclictest17:51:172
2792199795,19cyclictest7950irq/56-dwc_otg_20:21:123
159782790,2sleep30-21swapper/319:19:353
86542770,5sleep02791899cyclictest18:32:290
46032730,5sleep22792099cyclictest21:01:312
27920997321,11cyclictest7750irq/56-dwc_otg19:41:112
27918997335,8cyclictest9-21ksoftirqd/019:36:090
2792199724,19cyclictest0-21swapper/316:31:023
114492720,2sleep10-21swapper/119:51:371
129892690,2sleep10-21swapper/118:37:381
27919996812,4cyclictest7750irq/56-dwc_otg20:51:001
2791899682,31cyclictest0-21swapper/021:31:110
2791999677,36cyclictest0-21swapper/116:36:141
2791899673,53cyclictest1213-21chrt18:16:110
2791899673,53cyclictest1213-21chrt18:16:110
2791899671,38cyclictest17528-21fschecks_count19:21:170
27918996538,7cyclictest7850irq/56-dwc_otg_20:31:090
105002650,2sleep30-21swapper/321:48:143
81382640,2sleep10-21swapper/121:46:031
2791999644,6cyclictest7950irq/56-dwc_otg_18:26:261
27918996423,17cyclictest0-21swapper/020:16:100
2791999637,6cyclictest0-21swapper/121:11:101
2791999637,4cyclictest0-21swapper/120:01:521
2791999637,4cyclictest0-21swapper/120:01:521
2791899632,46cyclictest7620-21grep17:01:260
2791899631,38cyclictest24532-21grep20:46:290
2791899631,35cyclictest21101-21aten_rbpower_po17:41:130
2791899631,32cyclictest17711-21fschecks_time17:31:150
14362630,2sleep20-21swapper/221:36:502
104172630,1sleep20-21swapper/220:30:512
2791899623,34cyclictest11-21rcu_preempt18:25:590
2791899621,43cyclictest15965-21kworker/0:120:36:140
2791899621,36cyclictest22853-21tune2fs20:06:170
2791899621,32cyclictest0-21swapper/021:36:130
2791999618,3cyclictest0-21swapper/119:24:231
2791999616,4cyclictest7750irq/56-dwc_otg20:14:071
2791999613,9cyclictest5705-21ssh21:42:011
2791899616,37cyclictest0-21swapper/019:51:100
27918996113,7cyclictest2747-21latency_hist16:50:590
27918996113,7cyclictest2747-21latency_hist16:50:590
2791899608,30cyclictest0-21swapper/018:01:160
2791899603,38cyclictest0-21swapper/019:41:270
2791999592,47cyclictest7950irq/56-dwc_otg_17:41:281
2791999592,12cyclictest30866-21ssh20:16:111
27919995919,37cyclictest13530-21sh17:20:591
2791899592,44cyclictest4740-21aten_rbpower_po16:56:130
2791899592,39cyclictest3539-21fschecks_count21:01:160
2791899591,30cyclictest0-21swapper/021:26:120
2791999587,20cyclictest7750irq/56-dwc_otg19:01:121
2791999581,3cyclictest7750irq/56-dwc_otg16:41:281
27918995814,22cyclictest32512-21ntp_kernel_err18:11:210
164362580,2sleep20-21swapper/220:36:432
2791999572,8cyclictest7950irq/56-dwc_otg_20:31:241
2791999571,7cyclictest30013-21ssh19:36:091
2791999571,5cyclictest7750irq/56-dwc_otg20:51:191
2791999571,5cyclictest0-21swapper/118:56:021
2791999571,5cyclictest0-21swapper/118:56:021
2791999571,3cyclictest0-21swapper/121:36:111
2791899573,33cyclictest0-21swapper/021:06:110
2791899572,35cyclictest4190-21ssh21:41:150
2791899571,32cyclictest28089-21runrttasks18:56:050
2791899571,32cyclictest28089-21runrttasks18:56:050
2791999564,4cyclictest7950irq/56-dwc_otg_20:36:431
2791999564,4cyclictest21710-21sh21:22:301
2791999564,3cyclictest0-21swapper/120:22:581
2791999562,5cyclictest30660-21rm21:33:301
2791999561,8cyclictest7750irq/56-dwc_otg18:34:341
2791999561,3cyclictest0-21swapper/119:56:111
2791999561,13cyclictest0-21swapper/118:21:161
2791899562,9cyclictest308-21sed20:56:270
2791899561,40cyclictest11317-21fschecks_count18:36:170
27918995613,4cyclictest8463-21seq21:46:140
2791999557,4cyclictest0-21swapper/121:54:221
2791999557,10cyclictest7950irq/56-dwc_otg_20:31:001
2791899554,32cyclictest0-21swapper/018:51:270
27918995521,15cyclictest9727-21idleruntime-cro19:50:590
2791999542,12cyclictest0-21swapper/119:43:051
2791999541,5cyclictest7750irq/56-dwc_otg16:46:181
2791999541,5cyclictest7750irq/56-dwc_otg16:46:181
2791999541,4cyclictest7750irq/56-dwc_otg21:57:001
2791999541,4cyclictest7750irq/56-dwc_otg16:51:271
2791999541,4cyclictest0-21swapper/117:04:261
27918995425,12cyclictest7950irq/56-dwc_otg_17:51:160
27918995424,14cyclictest13090-21ntpq21:51:200
2791899542,37cyclictest0-21swapper/019:26:240
27918995421,19cyclictest12848-21/usr/sbin/munin19:16:130
2792099536,30cyclictest28248-21ssh21:31:122
2791999536,38cyclictest0-21swapper/120:43:231
2791999532,4cyclictest7750irq/56-dwc_otg19:16:221
2791999532,44cyclictest0-21swapper/120:59:341
2791999532,12cyclictest0-21swapper/119:50:281
2791999531,8cyclictest7850irq/56-dwc_otg_18:51:161
2791999531,3cyclictest0-21swapper/121:01:271
2791999531,10cyclictest7850irq/56-dwc_otg_17:35:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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