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2025-11-09 - 13:14

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #1

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 rack0slot1s.osadl.org (updated Sun Nov 09, 2025 12:45:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1659499129127,1cyclictest0-21swapper/612:38:596
16600991280,127cyclictest0-21swapper/707:18:347
1657399128125,2cyclictest3-21ksoftirqd/007:40:450
1657399128125,2cyclictest3-21ksoftirqd/007:40:440
1658399127126,0cyclictest2950ksoftirqd/209:58:492
1657399127127,0cyclictest3-21ksoftirqd/009:20:150
1657399126123,2cyclictest3-21ksoftirqd/011:34:440
1660099125123,1cyclictest0-21swapper/707:21:167
16600991250,1cyclictest0-21swapper/709:47:357
1659199125124,1cyclictest0-21swapper/508:37:165
1658799125125,0cyclictest37-21ksoftirqd/308:51:193
16583991250,1cyclictest0-21swapper/210:50:572
1659499124123,0cyclictest61-21ksoftirqd/607:16:496
1659099124123,1cyclictest0-21swapper/409:20:154
1659499123122,1cyclictest0-21swapper/612:29:256
1659099123121,1cyclictest0-21swapper/407:40:454
1659099123121,1cyclictest0-21swapper/407:40:444
1658799123123,0cyclictest37-21ksoftirqd/312:20:093
1658799123123,0cyclictest37-21ksoftirqd/307:58:283
1659499122122,0cyclictest190750irq/36-eth1-rx-07:38:316
1659499122120,1cyclictest0-21swapper/607:55:166
1657399122122,0cyclictest3-21ksoftirqd/008:53:070
1657399122121,0cyclictest3-21ksoftirqd/009:05:050
1660099121120,1cyclictest0-21swapper/708:02:067
1660099121119,1cyclictest19031-21chk_conn_tcp09:09:577
1659499121118,2cyclictest0-21swapper/608:52:486
1659099121119,1cyclictest0-21swapper/411:34:454
16590991210,120cyclictest0-21swapper/409:26:534
1658399121119,1cyclictest21986-21chk_conn_tcp12:23:412
1657799121121,0cyclictest21-21ksoftirqd/108:37:151
1657799121119,1cyclictest21-21ksoftirqd/112:18:511
1659499120120,0cyclictest61-21ksoftirqd/612:33:356
1659499120118,1cyclictest19433-21chk_conn_tcp10:00:496
1659499120118,1cyclictest0-21swapper/609:04:556
16591991200,1cyclictest9753-21chk_conn_tcp12:18:515
16590991200,119cyclictest0-21swapper/408:27:284
1657399120119,0cyclictest3-21ksoftirqd/007:17:020
1660099119118,1cyclictest0-21swapper/708:09:017
1660099119117,1cyclictest0-21swapper/711:29:117
1659099119117,1cyclictest0-21swapper/408:53:074
16590991190,1cyclictest0-21swapper/409:55:584
1659099118116,1cyclictest0-21swapper/409:05:064
1657399118116,1cyclictest3-21ksoftirqd/011:20:150
1660099117117,0cyclictest69-21ksoftirqd/708:24:247
1659499117117,0cyclictest61-21ksoftirqd/609:11:586
1659499117116,0cyclictest61-21ksoftirqd/612:19:206
1659199117115,1cyclictest18886-21chk_conn_tcp09:09:525
1657399117115,1cyclictest3-21ksoftirqd/010:30:460
1659499116114,1cyclictest0-21swapper/611:35:436
1659099116115,1cyclictest0-21swapper/407:17:024
1658799116114,1cyclictest3750ksoftirqd/309:47:353
1658399116112,3cyclictest2950ksoftirqd/211:48:532
1657399116116,0cyclictest3-21ksoftirqd/009:03:390
1658799115114,0cyclictest37-21ksoftirqd/307:18:353
1658399115113,1cyclictest0-21swapper/210:40:242
1658399115113,1cyclictest0-21swapper/207:54:372
1659499114112,1cyclictest61-21ksoftirqd/609:06:416
1659199114112,1cyclictest0-21swapper/511:00:305
1659099113112,1cyclictest0-21swapper/409:03:394
1659099113111,1cyclictest2516-21lldpd10:30:474
1659099113111,1cyclictest0-21swapper/411:20:154
1658399113111,2cyclictest0-21swapper/208:43:252
1657799113112,0cyclictest21-21ksoftirqd/109:09:511
1660099112110,1cyclictest2516-21lldpd08:41:407
1659499112108,1cyclictest61-21ksoftirqd/609:56:086
1659499112108,1cyclictest0-21swapper/611:29:546
1658799111109,1cyclictest0-21swapper/307:46:003
1660099110110,0cyclictest69-21ksoftirqd/711:47:507
1660099110108,1cyclictest12748-21chk_conn_tcp09:58:387
1658799110110,0cyclictest37-21ksoftirqd/307:21:163
1658399110109,1cyclictest29-21ksoftirqd/208:59:502
1658399110109,1cyclictest0-21swapper/209:01:242
1658399110108,1cyclictest29-21ksoftirqd/211:27:132
1657399110109,0cyclictest3-21ksoftirqd/012:26:550
1659499109109,0cyclictest61-21ksoftirqd/607:25:406
1659199109107,1cyclictest19075-21chk_conn_tcp12:22:175
1658399109106,2cyclictest0-21swapper/207:15:422
1657799109109,0cyclictest21-21ksoftirqd/111:00:301
1658799108107,0cyclictest37-21ksoftirqd/308:02:063
1658799108106,1cyclictest37-21ksoftirqd/309:09:583
1659499107105,1cyclictest0-21swapper/610:34:046
1658399107104,2cyclictest27880-21chk_conn_tcp07:49:322
1657799107107,0cyclictest21-21ksoftirqd/112:35:281
1657799107105,1cyclictest21-21ksoftirqd/112:22:171
1660099106105,1cyclictest0-21swapper/712:04:277
1659499106104,1cyclictest61-21ksoftirqd/610:07:126
1658399106105,1cyclictest29-21ksoftirqd/207:10:142
1659499105103,1cyclictest0-21swapper/608:41:366
1659099105104,1cyclictest0-21swapper/412:26:564
1658799105104,1cyclictest0-21swapper/308:24:243
1658799105104,0cyclictest37-21ksoftirqd/311:29:113
1658799105103,1cyclictest37-21ksoftirqd/307:54:113
1657399105103,1cyclictest3-21ksoftirqd/011:04:000
1659499104104,0cyclictest61-21ksoftirqd/609:30:406
1659499104102,1cyclictest61-21ksoftirqd/607:32:386
1658799104104,0cyclictest37-21ksoftirqd/308:09:013
16583991040,2cyclictest0-21swapper/209:22:332
1660099102100,2cyclictest0-21swapper/708:38:257
1659499102100,1cyclictest0-21swapper/608:57:276
1659199102100,1cyclictest2516-21lldpd10:19:505
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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