[nzlug] Kernel squared

[Daniel Pittman]

"Phillip Hutchings" <sitharus at sitharus.com> writes:
>> > You do notice performance increases if you target this CPU rather than
>> > sticking with 386 packages.
>>
>> I wasn't aware of that.  Where do the VIA EPIA systems benefit?
>>
>> Is it instruction scheduling, cache awareness, alignment, or something
>> else?
>>
>> What sort of performance gain are we talking about; have you some
>> performance numbers to show the gains you see there?
>
> Mostly though usage of the i686 and SSE instructions that won't be
> compiled with i386 compilations. 

You must be using a /very/ recent compiler if it emits SSE instructions
without help.  As to the 686 specific instructions they generally don't
add much by way of performance.

> Also with the tiny cache -Os seemed to help. 

That would.

> I don't have any benchmarks to show for it, but it gave me a second or
> so in some MySQL stuff I was doing.

Thanks.
        Daniel
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