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2026-06-28 - 16:40

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 Sun Jun 28, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38438292404383,14sleep10-21swapper/119:08:301
38436482369358,7sleep60-21swapper/619:06:0912
38438152357335,14sleep70-21swapper/719:08:1813
38438022355338,11sleep110-21swapper/1119:08:063
38436022353333,13sleep100-21swapper/1019:05:412
38437072352332,13sleep140-21swapper/1419:06:496
38437602351332,12sleep90-21swapper/919:07:3215
38436952351331,13sleep80-21swapper/819:06:4314
38416632350332,6sleep20-21swapper/219:05:178
38437952349329,13sleep40-21swapper/419:08:0010
38437662348328,13sleep150-21swapper/1519:07:387
38438042347328,12sleep130-21swapper/1319:08:085
38437712347328,12sleep30-21swapper/319:07:439
38437322347325,15sleep50-21swapper/519:07:1211
38437682345324,14sleep00-21swapper/019:07:390
38436792345325,13sleep120-21swapper/1219:06:314
3844384993636,0cyclictest0-21swapper/1522:30:057
3844365993526,5cyclictest0-21swapper/919:48:0415
3844342993533,2cyclictest3986934-21kworker/u32:3+flush-259:022:30:158
3844352993428,1cyclictest1774-21snmpd23:12:1211
3844340993433,1cyclictest3856174-21kworker/u32:1+flush-259:019:45:171
384438499330,30cyclictest0-21swapper/1521:20:167
384437799330,30cyclictest0-21swapper/1320:45:155
3844368993332,1cyclictest4070840-21kworker/u32:1+flush-259:023:40:182
384435599330,1cyclictest0-21swapper/620:05:2512
3844384993232,0cyclictest0-21swapper/1523:22:467
3844374993229,3cyclictest4154221-21mii-tool23:50:154
384437499320,31cyclictest0-21swapper/1200:08:504
3844368993231,1cyclictest3986934-21kworker/u32:3+events_unbound22:30:172
3844368993230,1cyclictest3988201-21kworker/10:2+events23:02:502
3844365993228,3cyclictest1774-21snmpd23:29:4815
384436599320,31cyclictest0-21swapper/923:20:1515
3844355993229,1cyclictest1774-21snmpd20:41:5812
384438299317,13cyclictest0-21swapper/1421:03:036
384438299310,30cyclictest0-21swapper/1420:26:346
384437799310,30cyclictest0-21swapper/1322:56:235
384437799310,30cyclictest0-21swapper/1320:05:125
384437799310,30cyclictest0-21swapper/1300:10:595
3844374993129,1cyclictest1774-21snmpd20:38:074
384437499310,30cyclictest0-21swapper/1222:30:234
384437499310,30cyclictest0-21swapper/1200:10:144
3844368993130,1cyclictest3988201-21kworker/10:2+events23:06:202
3844368993130,1cyclictest3988201-21kworker/10:2+events22:05:532
3844368993130,1cyclictest3988201-21kworker/10:2+events22:05:532
3844368993130,1cyclictest3988201-21kworker/10:2+events21:55:202
3844368993130,1cyclictest3988201-21kworker/10:2+events00:29:262
3844368993130,1cyclictest3988201-21kworker/10:2+events00:07:062
3844368993128,1cyclictest3975362-21kworker/10:0+events21:40:192
384436599310,30cyclictest0-21swapper/920:11:3415
384436599310,30cyclictest0-21swapper/900:14:2915
384436199310,30cyclictest0-21swapper/822:55:1514
384436199310,30cyclictest0-21swapper/822:39:0714
384436199310,30cyclictest0-21swapper/821:30:1514
384435899310,30cyclictest0-21swapper/700:24:1013
3844355993127,1cyclictest1774-21snmpd20:03:4912
384435599310,30cyclictest0-21swapper/620:58:5712
384435299310,30cyclictest0-21swapper/521:35:2311
384435099310,30cyclictest0-21swapper/423:12:2110
3844345993130,1cyclictest1774-21snmpd23:27:569
384433699310,30cyclictest0-21swapper/023:06:260
3844384993029,1cyclictest3999845-21kworker/u32:2+flush-259:021:55:227
3844384993029,1cyclictest3986582-21mii-tool21:40:157
384438499300,30cyclictest0-21swapper/1521:31:487
384438299306,13cyclictest0-21swapper/1423:36:496
384438299306,11cyclictest0-21swapper/1419:57:096
3844382993029,1cyclictest0-21swapper/1420:42:206
384438299300,1cyclictest0-21swapper/1400:34:476
3844377993029,1cyclictest1774-21snmpd20:12:105
384437499300,1cyclictest0-21swapper/1221:34:054
3844372993029,1cyclictest3893444-21ethtool20:05:163
3844372993029,1cyclictest0-21swapper/1121:48:283
384437299300,30cyclictest0-21swapper/1122:08:303
384437299300,30cyclictest0-21swapper/1122:08:303
3844368993030,0cyclictest3988201-21kworker/10:2+events23:55:272
3844368993030,0cyclictest3988201-21kworker/10:2+events23:52:342
3844368993030,0cyclictest3988201-21kworker/10:2+events23:35:092
3844368993030,0cyclictest3988201-21kworker/10:2+events23:30:332
3844368993030,0cyclictest3988201-21kworker/10:2+events23:28:432
3844368993030,0cyclictest3988201-21kworker/10:2+events23:20:312
3844368993030,0cyclictest3988201-21kworker/10:2+events23:19:082
3844368993030,0cyclictest3988201-21kworker/10:2+events22:56:482
3844368993030,0cyclictest3988201-21kworker/10:2+events22:54:242
3844368993030,0cyclictest3988201-21kworker/10:2+events22:38:462
3844368993030,0cyclictest3988201-21kworker/10:2+events00:20:322
3844368993030,0cyclictest3988201-21kworker/10:2+events00:00:162
3844368993030,0cyclictest3861962-21kworker/10:1+events21:11:182
3844368993030,0cyclictest3861962-21kworker/10:1+events19:40:212
3844368993030,0cyclictest3861962-21kworker/10:1+events19:30:182
3844368993030,0cyclictest3835301-21kworker/10:0+events19:26:522
3844368993029,1cyclictest3988201-21kworker/10:2+events22:25:312
3844368993029,1cyclictest3988201-21kworker/10:2+events22:12:352
3844368993029,1cyclictest3988201-21kworker/10:2+events22:12:352
3844368993029,1cyclictest3988201-21kworker/10:2+events21:50:222
3844368993029,1cyclictest3988201-21kworker/10:2+events21:45:152
3844368993029,1cyclictest3988201-21kworker/10:2+events00:35:512
3844368993029,1cyclictest3988201-21kworker/10:2+events00:10:162
3844368993029,1cyclictest3861962-21kworker/10:1+events21:32:032
3844368993029,1cyclictest3861962-21kworker/10:1+events21:20:102
3844368993029,1cyclictest3861962-21kworker/10:1+events21:17:022
3844368993029,1cyclictest3861962-21kworker/10:1+events20:55:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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