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2025-07-14 - 21:23

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 Mon Jul 14, 2025 00:46:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21123432365321,14sleep00-21swapper/019:07:140
21123352363346,11sleep110-21swapper/1119:07:103
21124962360341,12sleep50-21swapper/519:09:1211
21124422354333,12sleep100-21swapper/1019:08:292
21124042351338,8sleep130-21swapper/1319:07:595
21122952350326,15sleep60-21swapper/619:06:4812
21124582349327,13sleep70-21swapper/719:08:4213
21123822348327,14sleep80-21swapper/819:07:3914
21122272347327,13sleep40-21swapper/419:05:5810
21124292346322,15sleep140-21swapper/1419:08:166
21122042346323,14sleep150-21swapper/1519:05:377
21090762345309,24sleep20-21swapper/219:05:088
21124632343322,14sleep120-21swapper/1219:08:484
21124242343322,14sleep90-21swapper/919:08:1215
21123232341319,13sleep30-21swapper/319:07:029
21122472340319,14sleep10-21swapper/119:06:111
2112962999132,29cyclictest0-21swapper/020:40:010
2112977998425,30cyclictest0-21swapper/520:40:0011
2113004998120,30cyclictest0-21swapper/1320:40:005
2112982998122,14cyclictest0-21swapper/620:40:0012
211298799650,35cyclictest0-21swapper/820:40:0014
211299299647,28cyclictest0-21swapper/920:40:0015
2112966995929,30cyclictest0-21swapper/120:40:011
2112975995223,29cyclictest0-21swapper/420:40:0110
2113009994645,1cyclictest2302252-21kworker/u32:2+events_unbound21:55:187
2113009994317,23cyclictest2374016-21kworker/15:0+events23:15:007
2113009994217,25cyclictest2374016-21kworker/15:0+events22:48:347
2113007994241,1cyclictest3356-21Xorg20:40:006
2112984994240,1cyclictest2298388-21kworker/7:1+events23:06:1813
2112984994140,1cyclictest2298388-21kworker/7:1+events23:55:3813
2112984994140,1cyclictest2298388-21kworker/7:1+events23:34:2613
2112984994140,1cyclictest2298388-21kworker/7:1+events00:39:3013
2112984994140,1cyclictest2204517-21kworker/7:2+events21:43:4613
2112984994140,1cyclictest2204517-21kworker/7:2+events20:59:1413
2112984994140,1cyclictest2204517-21kworker/7:2+events20:30:3613
2112984994140,1cyclictest2204517-21kworker/7:2+events20:12:0113
2112984994140,1cyclictest1889288-21kworker/7:0+events19:22:2813
2113009994017,23cyclictest2374016-21kworker/15:0+events00:03:487
2113009994017,23cyclictest2141367-21kworker/15:0+events21:15:007
2113009994017,1cyclictest2374016-21kworker/15:0+events22:05:167
2112984994040,0cyclictest2298388-21kworker/7:1+events22:56:2813
2112984994039,1cyclictest2298388-21kworker/7:1+events23:42:1013
2112984994039,1cyclictest2298388-21kworker/7:1+events23:25:3013
2112984994039,1cyclictest2298388-21kworker/7:1+events22:29:3213
2112984994039,1cyclictest2298388-21kworker/7:1+events00:19:3713
2112984994039,1cyclictest2204517-21kworker/7:2+events21:36:1013
2112984994039,1cyclictest2204517-21kworker/7:2+events21:05:4613
2112984994039,1cyclictest2204517-21kworker/7:2+events20:46:3613
2112984994039,1cyclictest1889288-21kworker/7:0+events19:41:2413
2112984994039,1cyclictest1889288-21kworker/7:0+events19:41:2413
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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