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2025-05-02 - 12:46

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 50 highest latencies:
System rack0slot4s.osadl.org (updated Fri May 02, 2025 00:46:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22437512382376,4sleep70-21swapper/719:07:4213
22436132381375,4sleep100-21swapper/1019:06:092
22436472366343,20sleep30-21swapper/319:06:349
22436342360325,12sleep110-21swapper/1119:06:263
22436752358346,8sleep90-21swapper/919:06:5715
22436172357319,30sleep140-21swapper/1419:06:136
22437972355346,6sleep60-21swapper/619:08:1312
22438882352332,13sleep50-21swapper/519:09:1711
22437302350339,7sleep130-21swapper/1319:07:325
22439392349330,12sleep120-21swapper/1219:09:574
22437682349329,13sleep40-21swapper/419:07:5610
22438822348329,12sleep20-21swapper/219:09:148
22437892348328,13sleep00-21swapper/019:08:070
22439232347328,12sleep10-21swapper/119:09:451
22438312345325,13sleep150-21swapper/1519:08:387
22435622343323,13sleep80-21swapper/819:05:3414
224448799500,25cyclictest0-21swapper/1421:30:176
2244451994745,1cyclictest0-21swapper/319:40:229
2244487994610,25cyclictest0-21swapper/1422:25:126
224448799458,14cyclictest2600870-21StreamT~6
2244487994510,24cyclictest0-21swapper/1423:53:056
224448799449,24cyclictest0-21swapper/1421:19:186
2244465994438,6cyclictest1988998-21kworker/7:1+events22:20:5013
2244465994428,14cyclictest1988998-21kworker/7:1+events21:45:3913
2244465994338,3cyclictest1988998-21kworker/7:1+events23:45:2413
2244465994338,3cyclictest1988998-21kworker/7:1+events23:36:3413
2244465994338,3cyclictest1988998-21kworker/7:1+events23:30:1813
2244465994338,3cyclictest1988998-21kworker/7:1+events21:29:5413
2244465994338,3cyclictest1988998-21kworker/7:1+events20:41:5613
2244465994338,3cyclictest1988998-21kworker/7:1+events20:38:1213
2244465994338,3cyclictest1988998-21kworker/7:1+events20:21:4613
2244465994338,3cyclictest1988998-21kworker/7:1+events20:18:3413
2244465994338,3cyclictest1988998-21kworker/7:1+events19:55:4613
2244465994338,3cyclictest1988998-21kworker/7:1+events19:27:3013
2244465994338,3cyclictest1988998-21kworker/7:1+events00:00:4513
2244465994338,3cyclictest1988998-21kworker/7:1+events00:00:4413
2244465994337,3cyclictest1988998-21kworker/7:1+events00:27:5513
2244465994328,0cyclictest1988998-21kworker/7:1+events19:33:3813
2244465994240,2cyclictest1988998-21kworker/7:1+events00:15:1713
2244465994237,3cyclictest1988998-21kworker/7:1+events23:22:5813
2244465994237,3cyclictest1988998-21kworker/7:1+events22:49:0813
2244465994237,3cyclictest1988998-21kworker/7:1+events22:11:0113
2244465994237,3cyclictest1988998-21kworker/7:1+events22:08:0413
2244465994237,3cyclictest1988998-21kworker/7:1+events21:52:3513
2244465994237,3cyclictest1988998-21kworker/7:1+events21:32:2613
2244465994237,3cyclictest1988998-21kworker/7:1+events21:13:3813
2244465994237,3cyclictest1988998-21kworker/7:1+events21:13:3813
2244465994237,3cyclictest1988998-21kworker/7:1+events20:58:2013
2244465994237,3cyclictest1988998-21kworker/7:1+events20:25:3813
2244465994237,3cyclictest1988998-21kworker/7:1+events19:22:1213
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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