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2023-11-29 - 17:21

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack3slot6s.osadl.org (updated Wed Nov 29, 2023 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32736211995,19sleep00-21swapper/007:05:510
565211193,12sleep20-21swapper/207:09:372
352210998,6sleep30-21swapper/307:06:543
32710210382,6sleep10-21swapper/107:05:311
130352240,1sleep00-21swapper/010:35:270
62499220,20cyclictest0-21swapper/212:15:212
276732210,1sleep10-21swapper/109:40:001
624992017,2cyclictest14787-21kworker/u8:010:10:052
623992017,2cyclictest0-21swapper/111:45:161
62299200,18cyclictest0-21swapper/008:15:180
62499191,16cyclictest0-21swapper/212:05:262
62499190,1cyclictest0-21swapper/207:55:202
62499190,1cyclictest0-21swapper/207:55:192
624991815,2cyclictest17227-21kworker/u8:209:30:052
624991815,2cyclictest14787-21kworker/u8:010:16:042
624991815,2cyclictest14787-21kworker/u8:009:40:042
624991714,2cyclictest5280-21kworker/u8:110:44:042
624991714,2cyclictest31920-21kworker/u8:209:54:042
624991714,2cyclictest31826-21kworker/u8:011:31:052
624991714,2cyclictest29594-21kworker/u8:111:40:052
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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