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2025-12-04 - 16:16

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 Dec 04, 2025 00:46:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8636152413394,12sleep30-21swapper/319:07:539
8636772395375,13sleep100-21swapper/1019:08:322
8637562359319,32sleep110-21swapper/1119:09:373
8635102357318,31sleep90-21swapper/919:06:3815
8636312356318,30sleep130-21swapper/1319:08:025
8634902356337,13sleep80-21swapper/819:06:2114
8635482351331,13sleep70-21swapper/719:07:0913
8636322349326,14sleep140-21swapper/1419:08:036
8635012349331,12sleep20-21swapper/219:06:318
8634642349328,13sleep10-21swapper/119:05:581
8636902348326,14sleep40-21swapper/419:08:4210
8634582348328,13sleep120-21swapper/1219:05:534
8634612345323,14sleep150-21swapper/1519:05:567
8636202344324,13sleep60-21swapper/619:07:5612
8636192344324,13sleep50-21swapper/519:07:5411
8635582343321,14sleep00-21swapper/019:07:170
864187993938,1cyclictest931652-21kworker/u32:2+flush-259:020:45:472
864179993837,0cyclictest0-21swapper/819:33:1214
864172993429,1cyclictest2395797-21snmpd21:45:1811
86419899330,33cyclictest0-21swapper/1419:45:156
864167993325,1cyclictest0-21swapper/423:20:1510
86416799330,30cyclictest0-21swapper/421:35:2810
864162993332,1cyclictest926320-21kworker/u32:0+events_unbound20:45:168
864198993229,2cyclictest913858-21kworker/u32:2+events_unbound20:05:536
86419899320,29cyclictest0-21swapper/1421:40:156
86417999320,29cyclictest0-21swapper/823:45:1414
864172993228,1cyclictest2395797-21snmpd21:42:0311
86420399310,30cyclictest0-21swapper/1523:26:267
86420399310,30cyclictest0-21swapper/1522:10:187
864198993130,1cyclictest0-21swapper/1420:46:206
864198993126,3cyclictest0-21swapper/1422:30:156
86419899310,30cyclictest0-21swapper/1423:53:456
86419899310,30cyclictest0-21swapper/1422:48:016
86419899310,30cyclictest0-21swapper/1421:00:166
86419899310,30cyclictest0-21swapper/1400:07:306
86419399310,30cyclictest0-21swapper/1222:39:184
86419399310,30cyclictest0-21swapper/1221:59:444
86419399310,30cyclictest0-21swapper/1220:44:234
86418999310,30cyclictest0-21swapper/1122:17:033
86418999310,30cyclictest0-21swapper/1121:11:353
86418999310,30cyclictest0-21swapper/1121:11:353
86418999310,30cyclictest0-21swapper/1120:39:563
86417999310,30cyclictest0-21swapper/800:35:1814
86417799310,30cyclictest0-21swapper/722:09:2013
86417799310,30cyclictest0-21swapper/720:05:0913
86417799310,30cyclictest0-21swapper/719:21:0313
86417499310,30cyclictest0-21swapper/620:21:5512
864167993129,1cyclictest2395797-21snmpd00:33:2210
86416799310,30cyclictest0-21swapper/420:59:5710
86416799310,30cyclictest0-21swapper/420:20:2910
864164993130,1cyclictest2395797-21snmpd00:28:379
864154993128,3cyclictest2395797-21snmpd23:57:570
864154993128,3cyclictest2395797-21snmpd23:38:500
86415499310,30cyclictest0-21swapper/022:28:540
86415499310,30cyclictest0-21swapper/020:26:350
86420399300,29cyclictest0-21swapper/1520:00:167
86420399300,1cyclictest0-21swapper/1522:53:347
86420399300,1cyclictest0-21swapper/1521:13:457
86420399300,1cyclictest0-21swapper/1521:13:457
86419899300,30cyclictest0-21swapper/1423:06:406
86419899300,30cyclictest0-21swapper/1419:56:526
86419899300,1cyclictest0-21swapper/1419:11:546
86419899300,1cyclictest0-21swapper/1400:22:256
86419899300,1cyclictest0-21swapper/1400:22:256
864196993029,1cyclictest984238-21ethtool21:30:165
864196993029,1cyclictest2395797-21snmpd20:09:285
864196993029,1cyclictest2395797-21snmpd00:04:575
86419699300,30cyclictest0-21swapper/1320:53:485
86419699300,29cyclictest0-21swapper/1322:51:105
86419699300,29cyclictest0-21swapper/1320:19:355
864193993029,1cyclictest2395797-21snmpd22:33:394
864193993029,1cyclictest2395797-21snmpd22:19:544
864193993029,1cyclictest0-21swapper/1200:34:104
86419399300,30cyclictest0-21swapper/1221:23:524
86419399300,30cyclictest0-21swapper/1221:23:524
86419399300,1cyclictest0-21swapper/1220:45:154
864189993029,1cyclictest2395797-21snmpd23:20:383
864189993029,1cyclictest2395797-21snmpd20:17:373
864189993029,1cyclictest1025858-21mii-tool22:20:153
864189993029,1cyclictest0-21swapper/1122:41:533
86418999300,30cyclictest0-21swapper/1122:14:293
864187993029,1cyclictest0-21swapper/1023:28:202
864183993029,1cyclictest2395797-21snmpd21:19:0915
864183993029,1cyclictest2395797-21snmpd21:19:0915
86418399300,30cyclictest0-21swapper/900:14:5415
86418399300,1cyclictest0-21swapper/920:50:4715
86417999300,30cyclictest0-21swapper/819:44:3414
86417999300,1cyclictest0-21swapper/820:15:1414
86417799300,30cyclictest0-21swapper/721:50:4413
86417799300,29cyclictest0-21swapper/721:40:5513
864174993029,1cyclictest2395797-21snmpd23:20:0212
864174993029,1cyclictest2395797-21snmpd22:49:1312
864174993029,1cyclictest2395797-21snmpd20:46:5912
864174993029,1cyclictest2395797-21snmpd20:26:0512
864174993029,1cyclictest2395797-21snmpd20:08:0112
864174993029,1cyclictest2395797-21snmpd19:12:0612
864172993029,1cyclictest2395797-21snmpd23:09:5211
864172993029,1cyclictest2395797-21snmpd21:14:3311
864172993029,1cyclictest2395797-21snmpd21:14:3311
864172993029,1cyclictest2395797-21snmpd20:07:0711
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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