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2025-04-02 - 05:43

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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 rack7slot7s.osadl.org (updated Wed Apr 02, 2025 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4801210591,9sleep30-21swapper/319:09:463
459829986,9sleep10-21swapper/119:07:061
457728963,8sleep00-21swapper/019:06:500
450128868,16sleep20-21swapper/219:05:502
4914993027,2cyclictest32-21ksoftirqd/200:18:162
4909993024,4cyclictest13-21ksoftirqd/023:44:500
4914992924,4cyclictest6131-21hostname22:55:152
4918992826,1cyclictest39-21ksoftirqd/321:28:133
4912992825,2cyclictest33652sleep100:05:521
4909992823,4cyclictest13-21ksoftirqd/023:23:070
4914992724,2cyclictest119202sleep221:21:442
4912992724,2cyclictest25-21ksoftirqd/123:19:351
4918992624,1cyclictest39-21ksoftirqd/323:30:443
4918992623,2cyclictest39-21ksoftirqd/323:59:223
4918992623,2cyclictest39-21ksoftirqd/323:43:033
4918992623,2cyclictest39-21ksoftirqd/322:46:593
4918992623,2cyclictest39-21ksoftirqd/322:35:583
4918992623,2cyclictest39-21ksoftirqd/300:38:133
4918992623,2cyclictest39-21ksoftirqd/300:27:363
4914992624,2cyclictest32-21ksoftirqd/223:09:572
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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