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SubjectRe: New Intel Bug! Only affects memory read performance
On Tue, 23 Dec 1997, Dan Hollis wrote:

> On Tue, 23 Dec 1997, Benjamin Redelings I wrote:
> > I was looking at the news articles liked to
> >, and I noticed one called
> > "Performance Flaw in Pentium Processor?". However, I think it affect
> > PPro, PII also.

I don't think this is a "new" Pentium bug. The Pentium (all known classes)
have absimal performance compared to the '486 when using the "built-in"
macro instructions such as rep movsb,movsw, scansb,scansw, etc. Also the
"loop" instruction is slower than dec ecx; jnz;.. These are "known"
performance problems that seemed to occur when the Pentium went RISC"y".

I read the web page and don't see anything new, just new hype.

Dick Johnson
Penguin : Linux version 2.1.70 on an i586 machine (66.15 BogoMips).
Warning : It's hard to remain at the trailing edge of technology.

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