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2025-11-23 - 12:10

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 23, 2025 00:45:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4171991320,131cyclictest0-21swapper/600:19:266
417199131128,2cyclictest0-21swapper/620:07:516
4171991300,129cyclictest0-21swapper/620:39:526
413999130124,5cyclictest21-21ksoftirqd/122:34:401
414799129125,4cyclictest29-21ksoftirqd/223:42:332
417199128123,4cyclictest0-21swapper/600:23:496
4164991280,127cyclictest0-21swapper/500:16:585
415899128126,2cyclictest190750irq/36-eth1-rx-19:14:374
413999128125,3cyclictest21-21ksoftirqd/120:39:061
417199127124,2cyclictest0-21swapper/619:32:206
4171991270,2cyclictest0-21swapper/622:00:376
416499127126,1cyclictest0-21swapper/521:55:165
416499127124,2cyclictest0-21swapper/520:32:345
415899127126,1cyclictest0-21swapper/421:46:494
415899127122,4cyclictest26365-21chk_conn_tcp20:45:204
415499127122,4cyclictest37-21ksoftirqd/320:18:463
414799127121,5cyclictest29-21ksoftirqd/220:04:332
4139991270,121cyclictest23915-21chk_conn_tcp22:19:481
4176991260,125cyclictest1718-21chk_conn_tcp21:06:217
4171991260,1cyclictest0-21swapper/623:53:416
4171991260,1cyclictest0-21swapper/600:12:266
415899126123,2cyclictest0-21swapper/423:30:174
415499126125,0cyclictest37-21ksoftirqd/323:34:043
415499126125,0cyclictest37-21ksoftirqd/322:13:063
415499126125,0cyclictest37-21ksoftirqd/321:07:053
4139991260,1cyclictest1337-21chk_conn_tcp22:10:211
4176991250,124cyclictest0-21swapper/720:02:187
417199125122,2cyclictest0-21swapper/622:35:566
416499125123,1cyclictest0-21swapper/519:53:395
4164991250,1cyclictest0-21swapper/521:02:365
415899125124,1cyclictest0-21swapper/421:10:244
415899125123,1cyclictest5349-21chk_conn_tcp20:17:364
415899125123,1cyclictest0-21swapper/400:07:514
413999125124,0cyclictest21-21ksoftirqd/120:28:161
413999125123,1cyclictest21-21ksoftirqd/121:22:071
406899125124,0cyclictest3-21ksoftirqd/023:17:100
417199124121,2cyclictest0-21swapper/622:27:496
415499124123,0cyclictest37-21ksoftirqd/320:29:293
413999124123,0cyclictest21-21ksoftirqd/121:36:361
413999124123,0cyclictest21-21ksoftirqd/121:36:361
406899124122,1cyclictest0-21swapper/000:37:100
417699123121,1cyclictest0-21swapper/719:23:087
417199123122,1cyclictest0-21swapper/621:40:036
416499123122,1cyclictest0-21swapper/521:51:175
416499123121,1cyclictest0-21swapper/520:56:365
415899123122,0cyclictest45-21ksoftirqd/422:37:094
415899123121,2cyclictest0-21swapper/400:25:514
415899123121,1cyclictest10091-21chk_conn_tcp22:51:574
415499123122,0cyclictest37-21ksoftirqd/300:02:543
414799123122,0cyclictest29-21ksoftirqd/222:20:422
413999123123,0cyclictest21-21ksoftirqd/122:55:131
406899123123,0cyclictest3-21ksoftirqd/022:09:370
406899123122,0cyclictest3-21ksoftirqd/020:21:510
417699122121,1cyclictest0-21swapper/723:05:417
417699122121,1cyclictest0-21swapper/722:13:067
417199122120,1cyclictest0-21swapper/622:14:276
417199122120,1cyclictest0-21swapper/619:15:236
417199122119,2cyclictest0-21swapper/622:05:276
417199122119,2cyclictest0-21swapper/621:38:216
417199122119,2cyclictest0-21swapper/621:38:216
415899122121,1cyclictest0-21swapper/423:44:024
413999122117,4cyclictest21-21ksoftirqd/119:32:101
406899122116,5cyclictest3-21ksoftirqd/022:23:160
417699121120,1cyclictest0-21swapper/700:17:097
417699121119,1cyclictest0-21swapper/722:00:247
417699121119,1cyclictest0-21swapper/721:36:557
417699121119,1cyclictest0-21swapper/721:36:557
417699121119,1cyclictest0-21swapper/720:09:007
417699121119,1cyclictest0-21swapper/719:34:587
417199121119,1cyclictest0-21swapper/623:41:006
417199121119,1cyclictest0-21swapper/621:12:296
416499121119,1cyclictest0-21swapper/500:04:105
415899121120,0cyclictest45-21ksoftirqd/420:36:584
415899121119,1cyclictest0-21swapper/423:46:554
415899121119,1cyclictest0-21swapper/420:07:554
415899121118,2cyclictest0-21swapper/423:25:454
415499121120,0cyclictest37-21ksoftirqd/319:51:223
415499121120,0cyclictest37-21ksoftirqd/319:45:103
413999121120,0cyclictest21-21ksoftirqd/122:45:161
413999121118,3cyclictest21-21ksoftirqd/100:08:501
406899121116,4cyclictest3-21ksoftirqd/023:54:580
417699120119,1cyclictest0-21swapper/700:06:227
417199120120,0cyclictest61-21ksoftirqd/619:10:006
416499120120,0cyclictest190750irq/36-eth1-rx-22:18:275
416499120119,0cyclictest53-21ksoftirqd/519:38:595
416499120117,2cyclictest0-21swapper/523:56:195
415899120118,1cyclictest22771-21chk_conn_tcp22:56:574
415499120114,5cyclictest37-21ksoftirqd/319:32:423
414799120117,3cyclictest29-21ksoftirqd/222:39:432
414799120115,4cyclictest22689-21ssh21:28:272
406899120115,4cyclictest3-21ksoftirqd/022:35:590
417699119118,1cyclictest0-21swapper/721:13:067
417699119118,1cyclictest0-21swapper/720:28:187
416499119117,1cyclictest0-21swapper/500:30:205
415499119119,0cyclictest37-21ksoftirqd/321:52:263
414799119119,0cyclictest29-21ksoftirqd/219:38:212
417199118115,2cyclictest0-21swapper/622:20:566
416499118117,1cyclictest0-21swapper/521:29:075
415899118117,1cyclictest0-21swapper/422:27:504
415499118117,0cyclictest37-21ksoftirqd/320:43:563
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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