On Fri, Oct 5, 2012 at 12:50 PM, Nathan Froyd <froy...@mozilla.com> wrote: > ----- Original Message ----- >> I see all these patches with mixed feeling - it puts breaks on all >> developers >> because they need to learn the new interface which does not bring any >> immediate benefit. So I think _your_ development time would be >> better >> spent by fixing open bugs or by tackling some of the existing >> scalability >> issues in GCC (rather than quoting funny '0.001% faster with 99% >> confidence' >> stuff). > > This tone is unnecessary.
Sorry, that wasn't intended. I question these numbers because unless you bootstrap say 100 times the noise in bootstrap speed is way too high to make such claims. Of course critical information is missing: "The new code bootstraps .616% faster with a 99% confidence of being faster." 99% confidence on what basis? What's your sample size? Why does the patch need this kind of "marketing"? > I, for one, think that it's excellent that Lawrence is writing these > cleanup patches and measuring what impact they have on performance. > Bonus points that they are making the compiler faster. Speed of the > compiler *is* a scalability issue, and it's one that GCC doesn't > appear to have paid all that much attention to over the years. I just don't believe the 0.5% numbers. Richard. > -Nathan
