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2023-12-10 - 02:04

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 20 highest latencies:
System rack0slot4s.osadl.org (updated Sun Dec 10, 2023 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9738952388367,12sleep130-21swapper/1319:06:125
9739132381374,4sleep140-21swapper/1419:06:306
9738832371364,4sleep10-21swapper/119:06:001
9740942354346,5sleep70-21swapper/719:08:4713
9739822353332,13sleep20-21swapper/219:07:238
9739672353314,13sleep50-21swapper/519:07:0911
9740992346326,12sleep120-21swapper/1219:08:524
9739902346327,11sleep80-21swapper/819:07:2814
9741272345326,11sleep40-21swapper/419:09:1610
9740412345322,14sleep150-21swapper/1519:08:087
9739512345323,14sleep60-21swapper/619:06:5412
9738762345325,12sleep110-21swapper/1119:05:543
9739712344325,11sleep90-21swapper/919:07:1415
9740112343322,12sleep30-21swapper/319:07:409
9741842341321,12sleep100-21swapper/1019:09:542
9740082339317,13sleep00-21swapper/019:07:370
97465199440,0cyclictest0-21swapper/1400:28:226
974653994317,9cyclictest58650irq/154-i91522:30:037
97464399415,36cyclictest0-21swapper/1220:47:484
974643994016,13cyclictest0-21swapper/1220:14:534
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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