FreeBSD 6 is coming too fast
Scott Long
scottl at samsco.org
Mon Apr 25 07:48:03 PDT 2005
Kirill Ponomarew wrote:
> On Mon, Apr 25, 2005 at 07:42:54AM -0600, Scott Long wrote:
>
>>>According to gcc-4.0 release notes, compilation speed for C++ was
>>>dramatically increased, up to 25% IIRC. I think 4.0 is good
>>>candidate for merging into HEAD.
>>>
>>>-Kirill
>>
>>Is this work that you plan on doing for us? What about the deprecated
>>language constructs in 4.0? What about the lack of exposure that it's
>>had outside of the FSF and Apple development circles?
>
>
> No, I'm not going to do it because of lack of knowledge, there are
> people who have more experience with it than me.
>
> -Kirill
Well, as I said in another email, switching to GCC 4 just because of
dubious "25% faster" (faster at what? compiling? resulting generated
code? crashing?) claims in the changelog is not a terribly good
reason =-) It seems that every time GCC claims to get "faster", our
buildworld times increase by 10%. Maybe the generated code is better
and faster, but it's no secret that gcc spends a lot more CPU cycles
on code genreation and optimization than it did in the 2.x series.
Note also that the GCC 4.0 changelog mentions that the -O0 flag is
faster; that's wonderful, but has no practical value to real people.
Scott
More information about the freebsd-current
mailing list