Mark E. Dawson, Jr.

@medawsonjr

CEO of JabPerf, Contributing Author to "Performance Analysis & Tuning on Modern CPUs" (1st & 2nd Edition available on Amazon), Blogger, and Former Amateur Boxer

Chicago, IL

Mark E. Dawson, Jr.
@medawsonjr
11月12日
I was today years old (as the kids like to say) when I learned that both INTEL Redwood Cove and AMD Zen 5 support instruction prefetching with PREFETCHI 🤯
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Mark E. Dawson, Jr.
@medawsonjr
11月4日
I hope this isn't just a tease!🤞🏾
Terence Crawford
@terencecrawford
11月4日
Maybe one more!🙃
Mark E. Dawson, Jr.
@medawsonjr
10月21日
"Lastly, when the sexy tool-of-the-day replaces the time-worn tool of yesteryear, an expert’s foundational knowledge transfers seamlessly while the 'tool expert' finds himself in a precarious employment marketability situation."
Debunking 5 Stubborn Systems Performance Myths
jabperf.comから
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Mark E. Dawson, Jr.
@medawsonjr
9月23日
Fable 5.1 is the best intern I've ever had. It told me cpu_power.throttle was minor % of total cycles to mean much. I reminded it that this thread spins for work so that rule-of-thumb won't apply. It immediately then performed a detailed, accurate analysis.
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Mark E. Dawson, Jr.
@medawsonjr
9月17日
REMINDER: Just because you compiled your latency-sensitive app to avoid heavy AVX instructions that would incur critical path down-clocking doesn't mean GLIBC won't dump heavy AVX on you anyway via its IFUNC Dispatch mechanism. Check your work!
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Mark E. Dawson, Jr.

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