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2026-03-10 - 15:02

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 Tue Mar 10, 2026 12:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
323522740,1sleep10-21swapper/107:05:261
287822410,2sleep30-21swapper/307:05:203
204422900,3sleep0429399cyclictest11:11:430
291722870,2sleep30-21swapper/310:43:443
4293998639,15cyclictest7750irq/56-dwc_otg11:50:130
156362790,4sleep115395-21latency_hist09:10:021
189342760,3sleep30-21swapper/309:13:353
258582750,2sleep30-21swapper/310:40:023
429399741,51cyclictest0-21swapper/009:35:130
233422740,1sleep10-21swapper/112:33:571
121082720,4sleep3429699cyclictest09:00:143
10892710,2sleep20-21swapper/208:30:152
139012700,1sleep20-21swapper/211:43:332
429399684,52cyclictest21486-21unixbench_singl09:15:280
429399684,52cyclictest21486-21unixbench_singl09:15:280
429399671,35cyclictest10605-21latency_hist11:40:010
429399646,50cyclictest12198-21ls09:00:150
4293996439,11cyclictest101ktimersoftd/011:20:270
4293996436,16cyclictest101ktimersoftd/012:30:150
429399641,48cyclictest29896-21cut08:20:150
429399641,37cyclictest2150-21grep08:30:280
4293996344,10cyclictest101ktimersoftd/012:05:180
429399634,33cyclictest0-21swapper/012:10:130
429399631,50cyclictest19753-21ssh09:15:010
429399621,57cyclictest101ktimersoftd/010:30:020
429399617,50cyclictest0-21swapper/007:45:290
4293996136,6cyclictest101ktimersoftd/010:55:200
4293996136,6cyclictest101ktimersoftd/010:55:200
4293996136,17cyclictest101ktimersoftd/007:25:290
429399611,32cyclictest5452-21grep07:10:290
429399611,32cyclictest5452-21grep07:10:290
429399606,31cyclictest2908-21apt-get08:35:130
4293996045,6cyclictest101ktimersoftd/012:25:020
4293996042,5cyclictest14647-21grep11:05:180
4293996032,5cyclictest6279-21modprobe08:45:010
4293996026,7cyclictest101ktimersoftd/010:20:010
429399594,45cyclictest9-21ksoftirqd/011:40:020
4293995940,7cyclictest101ktimersoftd/009:40:160
4293995930,6cyclictest7950irq/56-dwc_otg_09:05:140
429399591,6cyclictest917-21snmpd08:45:310
4295995834,7cyclictest301ktimersoftd/208:20:142
4293995842,6cyclictest10312-21taskset11:00:160
4293995842,4cyclictest25708-21unixbench_multi09:20:300
4293995829,18cyclictest101ktimersoftd/012:16:270
429399572,46cyclictest0-21swapper/010:50:280
4293995636,11cyclictest7750irq/56-dwc_otg11:25:290
429399561,44cyclictest0-21swapper/012:35:210
429399561,38cyclictest13-21rcuc/010:05:280
429399561,38cyclictest0-21swapper/010:25:020
4293995538,5cyclictest7950irq/56-dwc_otg_12:05:020
429399552,42cyclictest0-21swapper/011:30:310
429399551,38cyclictest877-21sort09:30:180
4293995437,3cyclictest0-21swapper/008:00:270
4293995431,16cyclictest6351-21egrep07:15:170
429399542,38cyclictest0-21swapper/007:55:260
429399542,38cyclictest0-21swapper/007:55:260
429399541,34cyclictest22228-21cut10:35:180
429399541,33cyclictest19751-21ls12:30:020
429399541,33cyclictest19751-21ls12:30:020
246542540,1sleep10-21swapper/110:38:071
4293995336,5cyclictest7850irq/56-dwc_otg_09:55:240
4293995336,3cyclictest0-21swapper/007:50:180
4293995332,4cyclictest101ktimersoftd/010:30:270
4293995332,11cyclictest30669-21ssh09:26:340
4293995320,6cyclictest7850irq/56-dwc_otg_09:45:130
429399531,40cyclictest9-21ksoftirqd/008:25:230
429399531,40cyclictest9-21ksoftirqd/008:25:230
429399521,43cyclictest31417-21grep10:45:310
4293995133,8cyclictest101ktimersoftd/010:40:230
429399513,32cyclictest0-21swapper/008:55:190
4293995130,4cyclictest24374-21wget08:05:160
4293995126,10cyclictest23409-21wget11:55:140
429399511,38cyclictest908-21runrttasks11:15:570
4293995036,4cyclictest7950irq/56-dwc_otg_11:45:310
4293995033,5cyclictest9378-21grep08:50:290
429399502,37cyclictest0-21swapper/010:14:200
429399502,36cyclictest9-21ksoftirqd/007:20:270
429399501,5cyclictest28746-21grep08:15:250
429599491,28cyclictest0-21swapper/208:25:242
429599491,28cyclictest0-21swapper/208:25:242
4294994821,8cyclictest0-21swapper/109:55:291
429399483,32cyclictest13-21rcuc/010:00:230
4293994829,4cyclictest15157-21latency_hist07:40:020
429399481,25cyclictest0-21swapper/009:50:250
429599466,25cyclictest7750irq/56-dwc_otg08:20:022
4293994611,4cyclictest7850irq/56-dwc_otg_07:30:130
39442463,36sleep20-21swapper/207:09:002
429699448,24cyclictest0-21swapper/307:20:143
429599445,16cyclictest29-21rcuc/211:15:122
4294994420,13cyclictest7850irq/56-dwc_otg_09:35:151
37742442,34sleep00-21swapper/007:06:520
4296994320,8cyclictest381ktimersoftd/310:05:163
429499439,15cyclictest221ktimersoftd/112:05:211
4293994326,4cyclictest7850irq/56-dwc_otg_07:44:570
429399431,31cyclictest908-21runrttasks08:12:460
4295994217,4cyclictest908-21runrttasks10:38:422
4294994217,11cyclictest7950irq/56-dwc_otg_10:55:221
4294994217,11cyclictest7950irq/56-dwc_otg_10:55:221
48932410,4sleep3381ktimersoftd/310:53:303
429699411,4cyclictest15475-21munin-run12:25:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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