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2026-06-25 - 15:47

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #4

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.
Unexpectedly long latencies may be caused by SMIs
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 rack0slot4s.osadl.org (updated Thu Jun 25, 2026 00:46:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35946392362354,5sleep150-21swapper/1519:08:437
35945322361328,25sleep100-21swapper/1019:07:172
35946332354334,13sleep90-21swapper/919:08:3715
35947092352332,13sleep70-21swapper/719:09:4013
35947102350329,13sleep80-21swapper/819:09:4014
35945672349330,12sleep30-21swapper/319:07:429
35945652349329,13sleep10-21swapper/119:07:401
35944932349329,13sleep130-21swapper/1319:06:485
35944612349328,14sleep60-21swapper/619:06:2612
35945782348329,12sleep120-21swapper/1219:07:514
35945112348328,13sleep110-21swapper/1119:07:023
35945832347326,14sleep00-21swapper/019:07:560
35945872346327,12sleep40-21swapper/419:07:5910
35945662345326,13sleep20-21swapper/219:07:418
35944352345337,5sleep50-21swapper/519:06:0811
35944272345324,14sleep140-21swapper/1419:06:026
3595171993838,0cyclictest0-21swapper/1523:17:217
3595171993838,0cyclictest0-21swapper/1521:42:567
3595171993838,0cyclictest0-21swapper/1521:21:467
3595171993838,0cyclictest0-21swapper/1521:21:467
359517199376,31cyclictest0-21swapper/1521:58:037
3595171993535,0cyclictest0-21swapper/1520:04:267
359515399330,32cyclictest0-21swapper/900:30:1515
359515399330,32cyclictest0-21swapper/900:30:1415
3595124993326,7cyclictest1774-21snmpd21:54:010
3595153993229,3cyclictest1774-21snmpd23:00:2815
359515399320,31cyclictest0-21swapper/921:35:1515
359515099320,29cyclictest0-21swapper/800:05:1314
359514199320,29cyclictest0-21swapper/519:20:5111
3595124993229,3cyclictest0-21swapper/023:50:110
3595171993130,1cyclictest1774-21snmpd00:01:247
359516399310,30cyclictest0-21swapper/1222:42:144
3595159993130,1cyclictest0-21swapper/1121:05:443
3595155993130,1cyclictest3480347-21kworker/10:2+events21:25:262
3595155993129,1cyclictest3868609-21kworker/10:0+events23:49:092
3595155993129,1cyclictest3868609-21kworker/10:0+events00:24:002
3595155993129,1cyclictest3480347-21kworker/10:2+events21:58:102
3595155993129,1cyclictest3480347-21kworker/10:2+events21:42:182
3595155993129,1cyclictest3480347-21kworker/10:2+events21:17:152
3595155993129,1cyclictest3480347-21kworker/10:2+events21:17:142
3595155993129,1cyclictest3480347-21kworker/10:2+events21:10:132
3595155993129,1cyclictest1774-21snmpd00:08:392
359515599310,30cyclictest0-21swapper/1019:50:012
359515599310,30cyclictest0-21swapper/1019:49:532
3595153993130,1cyclictest1774-21snmpd21:30:1515
3595153993123,6cyclictest0-21swapper/919:25:1415
359515399310,30cyclictest0-21swapper/922:33:4415
3595150993129,1cyclictest1774-21snmpd20:42:0614
359515099310,30cyclictest0-21swapper/800:26:5414
359515099310,30cyclictest0-21swapper/800:26:5314
3595143993130,1cyclictest1774-21snmpd21:53:1912
3595134993130,1cyclictest3795469-21mii-tool22:25:159
359513499310,30cyclictest0-21swapper/321:13:559
359513299310,30cyclictest0-21swapper/222:49:368
359513299310,30cyclictest0-21swapper/221:42:068
359512899310,30cyclictest0-21swapper/122:20:141
359512499310,30cyclictest0-21swapper/022:30:090
359512499310,30cyclictest0-21swapper/022:27:350
3595171993030,0cyclictest0-21swapper/1522:54:337
3595171993029,1cyclictest1774-21snmpd21:37:167
3595171993029,1cyclictest1774-21snmpd21:01:177
359517199300,30cyclictest0-21swapper/1521:33:457
359517199300,30cyclictest0-21swapper/1520:25:137
359517199300,30cyclictest0-21swapper/1520:12:017
359516499305,15cyclictest0-21swapper/1321:43:585
3595164993029,1cyclictest3866371-21mii-tool23:20:145
3595164993029,1cyclictest1774-21snmpd20:58:485
3595164993029,1cyclictest1774-21snmpd20:17:165
3595164993029,1cyclictest0-21swapper/1319:23:395
359516499300,29cyclictest0-21swapper/1322:38:455
359516499300,1cyclictest0-21swapper/1321:33:575
3595163993029,1cyclictest3892179-21mii-tool23:40:144
3595163993029,1cyclictest1774-21snmpd22:23:594
3595163993029,1cyclictest1774-21snmpd19:40:134
3595159993029,1cyclictest1774-21snmpd21:32:283
3595159993029,1cyclictest1774-21snmpd00:12:023
3595159993023,4cyclictest0-21swapper/1119:55:143
3595155993030,0cyclictest3480347-21kworker/10:2+events21:31:082
3595155993030,0cyclictest3480347-21kworker/10:2+events19:36:562
3595155993029,1cyclictest3868609-21kworker/10:0+events23:43:202
3595155993029,1cyclictest3802245-21kworker/10:0+events22:51:402
3595155993029,1cyclictest3802245-21kworker/10:0+events22:41:232
3595155993029,1cyclictest1774-21snmpd23:52:162
3595155993029,1cyclictest1774-21snmpd22:22:082
3595155993029,1cyclictest1774-21snmpd20:33:352
3595155993029,1cyclictest0-21swapper/1020:17:382
3595155993028,1cyclictest3850765-21kworker/10:1+events23:21:322
3595153993029,1cyclictest0-21swapper/921:42:5415
3595153993027,3cyclictest1774-21snmpd19:11:0915
359515399300,1cyclictest0-21swapper/923:31:4915
359515099300,29cyclictest0-21swapper/820:31:5614
359515099300,1cyclictest0-21swapper/822:28:2014
3595148993029,1cyclictest1774-21snmpd21:52:4313
3595148993029,1cyclictest1774-21snmpd20:50:1813
3595148993028,2cyclictest1774-21snmpd19:24:2713
359514899300,29cyclictest0-21swapper/721:00:3513
3595143993029,1cyclictest1774-21snmpd00:19:5012
3595143993029,1cyclictest0-21swapper/622:00:3812
359514399300,1cyclictest0-21swapper/623:39:0112
3595141993029,1cyclictest1774-21snmpd22:38:3911
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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