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2025-01-18 - 12:18

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 10 highest latencies:
System rackbslot5s.osadl.org (updated Sat Jan 18, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1224454994935,11cyclictest311ktimers/221:05:132
1224449994938,8cyclictest1295451-21kworker/u8:0+events_unbound23:00:111
1224445994935,11cyclictest121ktimers/022:10:070
1224449994537,5cyclictest1263249-21sh21:00:001
1224445994536,5cyclictest1260851-21unixbench_multi20:50:290
1224456994431,9cyclictest391ktimers/320:25:113
1224454994434,6cyclictest1243389-21grep20:00:272
1224445994432,6cyclictest1233107-21unixbench_singl19:30:290
1224456994332,7cyclictest1264540-21unixbench_singl21:00:293
1224456994332,7cyclictest1264540-21unixbench_singl21:00:283
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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