Chapter 5 GCC nit

Ken Moffat ken at kenmoffat.uklinux.net
Tue Aug 2 04:41:20 PDT 2005


On Mon, 1 Aug 2005, Randy McMurchy wrote:

> Hi all,
>
> A minor nit I noticed in the Chapter 5 GCC instructions (all versions):
>
> Noted in the SBU times between Pass 1 and Pass 2 is that they seem to
> be reversed. Pass 1 is shown to be 4.4 SBU and Pass 2 is 11.0. Shouldn't
> these be the other way around?
>
> My experience is that bootstrapping Pass 1 takes significantly longer
> than simply building in Pass 2 (Pass 2 includes c++ notwithstanding).
>
> I did not factor in the test suite as the SBU times don't reflect they
> are being run.
>
>

 Huh ?  11 SBU for pass 1 ?   I admit that my timings include the
testsuite for pass 2, but for 6.1 on i686 I've got

gcc-3.4.3 pass 1  596 seconds,  4.3 SBU
gcc-3.4.3 pass 2 2075 seconds, 14.9 SBU

Ken
-- 
 das eine Mal als Tragödie, das andere Mal als Farce




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