Messages in this thread | | | Date | Mon, 2 Jan 2006 10:21:37 -0500 | From | Kurt Wall <> | Subject | Re: Arjan's noinline Patch |
| |
On Mon, Jan 02, 2006 at 12:04:04PM +0100, Ingo Molnar took 0 lines to write: > > * Kurt Wall <kwallnator@gmail.com> wrote: > > > After applying Arjan's noline patch (http://www.fenrus.org/noinlin), I > > see almost a 10% reduction in the size of .text (against 2.6.15-rc6) > > with no apparent errors and no reduction in functionality: > > just to make sure: this was with -Os _also_ turned on, right? So what > you measured was the effect of Arjan's patch plus -Os, combined, > correct?
Yes. And it was a faulty approach. I've posted new results with the effects of Arjan's patch. CONFIG_CC_OPTIMIZE_FOR_SIZE was enabled for all kernels.
> if yes you should measure the two effects in isolation, like the vmlinux > numbers i posted. Every patch applied and every change to .config > options must be measured separately, to get valid results. This doesnt > invalidate your raw vmlinux measurements - you simply need to add a > "Arjan's patch applied but no -Os turned on" number - but it does > invalidate your conclusion quoted above.
Quite so. I'm working on the "no -Os" case now.
Kurt -- Alden's Laws: (1) Giving away baby clothes and furniture is the major cause of pregnancy. (2) Always be backlit. (3) Sit down whenever possible. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |