Re: -Os versus -O2

On Sun, 2007-06-24 at 18:08 -0700, david@xxxxxxx wrote:

on a system level, size can help performance because you have more
memory available for other things. It also reduces download size and
gives you more space on the live CD....

if you want to make things bigger again, please do this OUTSIDE the
"optimize for size" option. Because that TELLS you to go for size.

then do we need a new option 'optimize for best overall performance' that
goes for size (and the corresponding wins there) most of the time, but is
ignored where it makes a huge difference?

that isn't so easy. Anything which doesn't have a performance tradeoff
is in -O2 already. So every single thing in -Os costs you performance on
a micro level.

The translation to macro level depends greatly on how things are used
(you even have to factor in download times etc)... so that is a fair
question to leave up to the user... which is what there is today.

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