Messages in this thread | | | Date | Sun, 31 Oct 2004 01:09:54 +0000 (GMT) | From | Ken Moffat <> | Subject | Re: [OT] Re: code bloat [was Re: Semaphore assembly-code bug] |
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On Sat, 30 Oct 2004, Alan Cox wrote:
> On Sul, 2004-10-31 at 00:20, Lee Revell wrote: > > I think very few application developers understand the point Linus made > > - that bigger code IS slower code due to cache misses. If this were > > widely understood we would be in pretty good shape. > > On my laptop both Openoffice and gnome are measurably faster if you > build the lot with -Os (except a couple of image libs) >
Depends how much of gnome you use. I used to swear by -Os for non-toolchain stuff, but in the end I got bitten by gnumeric on x86. http://bugs.gnome.org/show_bug.cgi?id=128834 is similar, but in my case opening *any* spreadsheet would cause gnumeric to segfault (gcc-3.3 series). Add in the time spent rebuilding gnome before I found this bug report, and adding extra parts of gnome just in case I missed something, and the time to load it is irrelevant. Since then I've had an anecdotal report that -Os is known to cause problems with gnome. I s'pose people will say it serves me right for doing my initial testing on ppc which didn't have this problem ;) The point is that -Os is *much* less tested than -O2 at the moment.
Ken -- das eine Mal als Tragödie, das andere Mal als Farce
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