[Mono-dev] Make use of --desktop and --server VM modes [was Re: ToString() performace in Mono revisited]

[Mirco Bauer]

On Mon, 2007-12-31 at 14:44 +0100, Robert Jordan wrote:
> Mirco Bauer wrote:
> > On Mon, 2007-12-31 at 10:58 +0900, Atsushi Eno wrote:
> >> Oops yes ;-)
> >>
> >> BTW Kazuki cooked patches to reduce those memory usage with little
> >> cost:
> >>
> >> http://kserver.panicode.com/memo/2007/12/30/0
> >> (327KB -> 57KB)
> > 
> > looking at those number like:
> > CPU 9.3sec -> 31.5sec
> > MEM 389KB -> 32KB
> > 
> > gives me mixed feelings, it's the typical: use less memory needs more
> > CPU scenario.
> 
> Then you must be reading Japanese better than I do ;-)
> Hint: scroll down to see the real results.

Didn't notice that only the last measurement is the final one.

> 
> > I still believe we should start optimizing both ends and using the
> > --desktop and --server modes we already support but which we are not
> > using yet.
> 
> This is wrong, at least in the context of this mail. Those switches
> will affect JIT compiler optimizations, whereas this mail is
> about suboptimal implementation of ToString (). Even a über-JIT
> won't be able to turn a suboptimal algorithm into a good one.

If the setting is exposed via an icall then managed can decide between 2
algorithms/implementations depending on the switch, one being more CPU
friendly and the other more memory friendly.


-- 
Regards,

Mirco 'meebey' Bauer

PGP-Key ID: 0xEEF946C8

FOSS Developer    meebey at meebey.net  http://www.meebey.net/
PEAR Developer    meebey at php.net     http://pear.php.net/
Debian Developer  meebey at debian.org  http://www.debian.org/
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