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2025-12-11 - 00:24

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 Wed Dec 10, 2025 00:46:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8704492365326,31sleep50-21swapper/519:07:4911
8704262365346,12sleep70-21swapper/719:07:3513
8704152363328,29sleep00-21swapper/019:07:270
8702692363333,24sleep100-21swapper/1019:05:452
8703082362321,14sleep90-21swapper/919:06:1715
8704392360339,14sleep140-21swapper/1419:07:416
8703682358318,13sleep40-21swapper/419:06:5910
8705152356339,11sleep120-21swapper/1219:08:454
8702972355335,13sleep150-21swapper/1519:06:067
8703432353333,13sleep60-21swapper/619:06:4512
8703182352334,12sleep20-21swapper/219:06:268
8703812351330,13sleep130-21swapper/1319:07:085
8704682350329,14sleep10-21swapper/119:08:011
8702932350329,13sleep110-21swapper/1119:06:033
8703402348328,13sleep30-21swapper/319:06:439
8703742346326,13sleep80-21swapper/819:07:0414
87102899540,26cyclictest0-21swapper/519:21:2511
87102899500,25cyclictest0-21swapper/523:34:0211
87102899500,25cyclictest0-21swapper/523:34:0211
87102899500,25cyclictest0-21swapper/523:01:0511
87102899500,25cyclictest0-21swapper/522:39:0711
87102899500,25cyclictest0-21swapper/521:55:1111
87102899500,25cyclictest0-21swapper/521:33:1311
87102899500,25cyclictest0-21swapper/520:38:1711
87102899500,25cyclictest0-21swapper/520:16:1911
87102899500,25cyclictest0-21swapper/520:05:2011
87102899500,25cyclictest0-21swapper/519:54:2111
87102899490,24cyclictest0-21swapper/522:50:0611
87102899480,23cyclictest0-21swapper/519:32:2411
87102899480,23cyclictest0-21swapper/500:06:5911
87102899470,22cyclictest0-21swapper/521:11:1411
87102899470,22cyclictest0-21swapper/500:28:5711
87102499350,0cyclictest0-21swapper/419:55:1510
87102899327,25cyclictest0-21swapper/521:44:1111
87102899327,14cyclictest0-21swapper/519:43:2211
87101299320,29cyclictest0-21swapper/019:35:150
871059993130,1cyclictest2395797-21snmpd23:55:207
87105399310,30cyclictest0-21swapper/1320:30:145
87105399310,30cyclictest0-21swapper/1320:30:145
87105099310,30cyclictest0-21swapper/1220:20:254
87105099310,30cyclictest0-21swapper/1220:20:254
87104799310,30cyclictest0-21swapper/1120:35:143
87104799310,30cyclictest0-21swapper/1119:50:493
87104799310,30cyclictest0-21swapper/1119:42:013
87104399310,30cyclictest0-21swapper/1022:40:422
87104399310,30cyclictest0-21swapper/1021:42:152
87103899310,30cyclictest0-21swapper/820:45:1714
87103399310,30cyclictest0-21swapper/700:10:1313
871028993127,4cyclictest0-21swapper/519:55:1411
871024993130,1cyclictest0-21swapper/421:02:3510
87102499310,30cyclictest0-21swapper/419:30:4010
87101899310,30cyclictest0-21swapper/220:03:238
87101599310,30cyclictest0-21swapper/123:00:161
871059993029,1cyclictest2395797-21snmpd19:49:007
87105999300,27cyclictest0-21swapper/1522:45:157
87105599300,1cyclictest0-21swapper/1400:03:206
871053993029,1cyclictest2395797-21snmpd21:57:205
87105399300,29cyclictest0-21swapper/1300:05:195
87105399300,1cyclictest0-21swapper/1323:28:405
87105399300,1cyclictest0-21swapper/1321:54:035
871050993029,1cyclictest2395797-21snmpd23:27:064
871050993029,1cyclictest2395797-21snmpd23:24:134
871050993029,1cyclictest2395797-21snmpd22:24:294
871047993029,1cyclictest2395797-21snmpd22:42:273
871043993029,1cyclictest2395797-21snmpd19:54:312
87104399300,30cyclictest0-21swapper/1020:57:452
87104399300,29cyclictest0-21swapper/1023:06:362
87104399300,29cyclictest0-21swapper/1023:04:512
871040993029,1cyclictest882468-21mii-tool19:20:1515
87104099300,30cyclictest0-21swapper/922:03:5915
87104099300,1cyclictest0-21swapper/919:37:3115
871038993029,1cyclictest903248-21ethtool19:45:1614
871038993029,1cyclictest1082149-21ethtool23:20:1614
87103899300,30cyclictest0-21swapper/823:14:2414
87103899300,1cyclictest0-21swapper/822:53:4714
87103399300,29cyclictest0-21swapper/721:06:3613
871030993029,1cyclictest2395797-21snmpd20:42:1512
87103099300,29cyclictest0-21swapper/621:50:4312
87103099300,29cyclictest0-21swapper/600:32:3612
871028993029,1cyclictest2395797-21snmpd20:02:1611
871028993029,1cyclictest2395797-21snmpd19:09:5911
87102899300,30cyclictest0-21swapper/523:55:1811
871024993029,1cyclictest949312-21kworker/4:1+events21:41:2610
871024993029,1cyclictest723592-21kworker/4:2+events20:01:0510
871024993029,1cyclictest1003399-21kworker/4:0+events23:50:1810
871024993029,1cyclictest1003399-21kworker/4:0+events22:54:5410
871024993029,1cyclictest0-21swapper/422:27:5810
871024993028,1cyclictest949312-21kworker/4:1+events20:58:1710
87102499300,1cyclictest0-21swapper/421:53:1310
871022993029,1cyclictest2395797-21snmpd21:38:169
871022993029,1cyclictest1140379-21ethtool00:30:159
871018993029,1cyclictest2395797-21snmpd20:19:598
87101899300,30cyclictest0-21swapper/223:40:488
87101899300,30cyclictest0-21swapper/223:40:488
871015993029,1cyclictest919924-21mii-tool20:05:161
87101599300,1cyclictest0-21swapper/122:42:091
871012993029,1cyclictest940707-21mii-tool20:30:140
871012993029,1cyclictest940707-21mii-tool20:30:140
871012993029,1cyclictest0-21swapper/019:28:180
87101299300,30cyclictest0-21swapper/023:20:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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