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2024-07-21 - 21:45

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #3

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 rack0slot3s.osadl.org (updated Sun Jul 21, 2024 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33323812256234,13sleep50-21swapper/519:05:285
33323532250207,12sleep40-21swapper/419:05:114
33326662247211,12sleep70-21swapper/719:09:077
33323622247207,31sleep20-21swapper/219:05:172
33323742245210,12sleep00-21swapper/019:05:220
33326232237216,12sleep60-21swapper/619:08:356
33325222234222,7sleep10-21swapper/119:07:081
33324732232209,13sleep30-21swapper/319:06:313
333297299408,10cyclictest0-21swapper/023:20:590
3332989993533,1cyclictest1650-21snmpd21:04:306
333298099350,34cyclictest0-21swapper/323:40:553
333298999340,1cyclictest0-21swapper/621:30:326
3332980993431,2cyclictest1650-21snmpd22:47:063
3332989993330,2cyclictest1650-21snmpd23:50:086
3332972993331,1cyclictest0-21swapper/023:25:250
3332989993029,1cyclictest1650-21snmpd23:16:356
3332985993027,2cyclictest1650-21snmpd23:58:265
3332980993029,1cyclictest0-21swapper/320:54:293
3332980993016,13cyclictest1650-21snmpd21:38:013
3332989992924,3cyclictest3303344-21kworker/6:0+mm_percpu_wq19:53:206
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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