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2025-12-20 - 05:21

OSADL QA Farm on Real-time of Mainline Linux

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

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 50 highest latencies:
System r0s0s.osadl.org (updated Sat Dec 20, 2025 00:46:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9863082296260,28sleep00-21swapper/019:07:150
9862242295259,27sleep40-21swapper/419:06:064
9863672291257,26sleep30-21swapper/319:08:073
9863662291257,26sleep20-21swapper/219:08:062
9864162289251,30sleep50-21swapper/519:08:485
9864092287268,12sleep70-21swapper/719:08:427
9863382287268,12sleep10-21swapper/119:07:391
9864082283263,13sleep60-21swapper/619:08:426
986982993330,2cyclictest870-21snmpd21:07:067
986982993330,2cyclictest870-21snmpd20:40:067
986982993330,2cyclictest870-21snmpd19:42:277
986982993330,2cyclictest1113728-21cat23:20:147
986981993330,2cyclictest870-21snmpd23:34:286
986981993330,2cyclictest870-21snmpd22:10:476
986981993330,2cyclictest870-21snmpd21:22:046
98698199330,30cyclictest0-21swapper/619:36:216
986979993330,2cyclictest870-21snmpd21:55:044
986978993330,2cyclictest870-21snmpd20:48:573
986978993330,2cyclictest870-21snmpd20:37:243
986978993330,2cyclictest870-21snmpd19:50:433
986978993330,2cyclictest870-21snmpd19:50:433
986977993330,2cyclictest870-21snmpd19:36:122
986977993330,2cyclictest1043313-21cat21:00:152
98697799331,31cyclictest1026499-21ntpq20:25:252
986976993330,3cyclictest870-21snmpd23:16:361
986976993330,3cyclictest870-21snmpd22:14:531
986976993330,2cyclictest870-21snmpd23:55:041
986975993330,1cyclictest973979-21kworker/0:1+events23:50:160
986982993229,2cyclictest870-21snmpd20:03:447
98698299320,31cyclictest0-21swapper/723:37:377
98698299320,30cyclictest0-21swapper/719:35:257
986981993230,2cyclictest870-21snmpd20:57:066
986981993230,1cyclictest870-21snmpd23:25:256
986981993229,2cyclictest870-21snmpd22:42:546
986981993229,2cyclictest870-21snmpd21:05:486
986981993229,2cyclictest870-21snmpd20:00:116
986981993229,2cyclictest870-21snmpd19:30:046
98698199320,31cyclictest0-21swapper/623:47:566
98698199320,31cyclictest0-21swapper/622:55:066
98698199320,30cyclictest0-21swapper/623:13:066
98698199320,30cyclictest0-21swapper/622:09:356
98698199320,30cyclictest0-21swapper/620:12:416
986980993230,2cyclictest870-21snmpd20:44:295
986979993230,2cyclictest870-21snmpd22:56:404
98697999320,31cyclictest0-21swapper/423:43:404
98697999320,31cyclictest0-21swapper/423:43:404
98697999320,30cyclictest0-21swapper/400:20:114
986978993230,1cyclictest870-21snmpd21:33:573
986978993230,1cyclictest870-21snmpd21:27:243
986978993230,1cyclictest870-21snmpd20:32:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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