amd64 arch and sse optimization

[Reinhard Tartler]

On Mon, Feb 3, 2014 at 2:01 PM, Jaromír Mikeš <mira.mikes at gmail.com> wrote:

> Please go ahead ... It looks like debian-devel would be right place.
> It sound strange that sse is redundant in amd64.

Please elaborate, why is this strange?

> Some time ago I played with sse optimization flags and packages build with
> and without them
> got 30-40% difference in performance in my cases.
>
> Would be great to make it clear.

Unfortunately not. Please clarify what exact packages did you compile
with what additional see flags on what architecture to get the 30-40%
difference.

Yes, this can make a huge difference, but using those flags is like
firing a shotgun: it may solve some symptoms, but is likely to cause
collateral damage.

-- 
regards,
    Reinhard