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2020-03-29 - 11:11

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #1

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 
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Intel(R) Xeon(R) CPU E3-1230 V2 @ 3.30GHz, Linux 3.18.36-rt37 (Profile)

Latency plot of shadow in rack #0, slot #1
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 rack0slot1s.osadl.org (updated Sun Mar 29, 2020 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3023024614,18sleep20-21swapper/219:06:172
2959523513,18sleep00-21swapper/019:05:120
3020423414,17sleep30-21swapper/319:05:553
3019623412,8sleep40-21swapper/419:05:484
2774123413,17sleep60-21swapper/619:05:016
3018223313,17sleep10-21swapper/119:05:361
3017923313,17sleep70-21swapper/719:05:357
2919423211,17sleep50-21swapper/519:05:085
3070099160,15cyclictest0-21swapper/621:37:236
3070099160,15cyclictest0-21swapper/619:40:086
3069199160,3cyclictest0-21swapper/523:48:245
3069199160,2cyclictest0-21swapper/521:52:535
3069199160,2cyclictest0-21swapper/520:31:075
3069199160,2cyclictest0-21swapper/500:35:395
3069199160,1cyclictest0-21swapper/500:20:535
3069199160,13cyclictest0-21swapper/500:34:245
30706991512,2cyclictest0-21swapper/722:42:237
30706991512,2cyclictest0-21swapper/719:58:237
3070699150,2cyclictest0-21swapper/720:12:227
3070699150,13cyclictest0-21swapper/722:37:387
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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