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2025-12-16 - 04:17

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #5

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 rack0slot5s.osadl.org (updated Tue Dec 16, 2025 00:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38868322354331,15sleep90-21swapper/919:08:4515
38868322354331,15sleep90-21swapper/919:08:4515
38866782354331,15sleep20-21swapper/219:06:298
38866782354331,15sleep20-21swapper/219:06:298
38866802346324,14sleep40-21swapper/419:06:3110
38866802346324,14sleep40-21swapper/419:06:3110
38866072329306,15sleep110-21swapper/1119:05:343
38866072329306,15sleep110-21swapper/1119:05:343
38868592322300,14sleep10-21swapper/119:09:091
38868592322300,14sleep10-21swapper/119:09:091
38867202322299,15sleep60-21swapper/619:07:0512
38867202322299,15sleep60-21swapper/619:07:0512
38866912322299,15sleep120-21swapper/1219:06:394
38866912322299,15sleep120-21swapper/1219:06:394
38866442318295,15sleep50-21swapper/519:06:0011
38866442318295,15sleep50-21swapper/519:06:0011
38867752315292,15sleep70-21swapper/719:07:5513
38867752315292,15sleep70-21swapper/719:07:5513
38868162314292,14sleep100-21swapper/1019:08:302
38868162314292,14sleep100-21swapper/1019:08:302
38866722314292,14sleep130-21swapper/1319:06:245
38866722314292,14sleep130-21swapper/1319:06:245
38866792313291,14sleep30-21swapper/319:06:309
38866792313291,14sleep30-21swapper/319:06:309
38868202312289,15sleep140-21swapper/1419:08:346
38868202312289,15sleep140-21swapper/1419:08:346
38868312311289,14sleep80-21swapper/819:08:4414
38868312311289,14sleep80-21swapper/819:08:4414
38868052311289,14sleep00-21swapper/019:08:200
38868052311289,14sleep00-21swapper/019:08:200
38866542310287,15sleep150-21swapper/1519:06:107
38866542310287,15sleep150-21swapper/1519:06:107
39059982970,0sleep7851rcuc/719:25:0013
388725399410,40cyclictest0-21swapper/1019:44:032
3887267993939,0cyclictest0-21swapper/1319:44:035
3887272993837,1cyclictest0-21swapper/1520:04:287
3887262993534,1cyclictest0-21swapper/1221:12:064
3887247993534,1cyclictest2247-21snmpd00:21:5415
3887245993535,0cyclictest0-21swapper/823:39:5914
3887234993535,0cyclictest0-21swapper/519:44:0311
388726999340,33cyclictest0-21swapper/1421:53:136
3887253993434,0cyclictest0-21swapper/1019:39:302
3887242993434,0cyclictest0-21swapper/700:35:2513
3887223993433,1cyclictest0-21swapper/221:12:068
3887217993434,0cyclictest0-21swapper/000:35:250
3887267993333,0cyclictest0-21swapper/1319:39:305
3887231993332,1cyclictest0-21swapper/423:05:1910
3887267993232,0cyclictest0-21swapper/1322:23:535
3887245993232,0cyclictest0-21swapper/822:38:0614
3887245993232,0cyclictest0-21swapper/822:38:0614
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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