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2024-04-13 - 06:13

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #8

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 rackbslot8s (updated Sat Apr 13, 2024 00:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37048962129103,8sleep50-21swapper/519:08:405
37048322129115,9sleep60-21swapper/619:07:466
37028812124110,9sleep70-21swapper/719:05:157
37048772122108,9sleep40-21swapper/419:08:234
37047042122107,10sleep20-21swapper/219:05:572
37047502121107,9sleep10-21swapper/119:06:361
37046842121107,9sleep00-21swapper/019:05:390
37052219911632,84cyclictest3800658-21kworker/2:221:50:532
3704780211599,10sleep30-21swapper/319:07:023
37052219911429,84cyclictest3749594-21kworker/2:020:46:102
37052219911329,0cyclictest3702583-21kworker/2:219:38:382
37052219911229,83cyclictest3702583-21kworker/2:219:11:362
37052219911229,0cyclictest3702583-21kworker/2:220:19:532
37052219911228,84cyclictest3702583-21kworker/2:220:32:402
37052219911128,83cyclictest3749594-21kworker/2:020:42:362
370522199110108,2cyclictest3800658-21kworker/2:223:02:422
370522199109106,2cyclictest31-21ksoftirqd/200:39:042
370522199107104,2cyclictest31-21ksoftirqd/223:16:282
370523799103100,2cyclictest721930-21snmpd23:35:326
3705237991030,100cyclictest0-21swapper/619:26:296
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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