Thread by @sqL_handLe

#AIX #IBMPower
there is just no-one else like Earl Jew
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CPU Threading Efficiency: The Processor Consumed Value
2017 September 13
techchannel.com/SMB/9/2017/aix…

indubitably
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"To conduct tactical monitoring, we must also consider the complexities of virtualization, consolidation and concurrency alongside the activities of multiple CPU cores."

"... for capacity planning, this assumption is mostly harmless.

However, this assumption is reckless for tactical monitoring..."

gotta love it when an esteemed expert says the way you usually do something ranges in risk from mostly harmless to reckless...
😂🤣🙃

"while concurrent fragments of CPUcore time are working or waiting, they're unavailable to serve any other virtual CPU (of this or any other LPAR)."

i'm glad he used a term as direct as "reckless"

regardless of the virtualization platform, this idea is *very* important

https://twitter.com/sqL_handLe/status/1471489203032801283?s=20

that *right* there is what i was looking for this morning...
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"Do not confuse the two meanings of idle in AIX:vmstat –IWwt 1:cpu:id (figure 1) and AIX:mpstat –w 1:id (Figures 2 and 3)."
techchannel.com/SMB/9/2017/aix…

i absolutely adore this turn of phrase
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"keep CPUcores fed, focused and furiously productive"

makes me wanna cry. that article is part 5.
it has links to the first 4 parts, but all of those links are broken.

the redirect from old ibmsystemmag links to techchannel isn't correct.