Re: branch-1_4 reduce memory footprint

[Gary V. Vaughan]

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Hi Eric,

On 10 Oct 2006, at 11:34, Eric Blake wrote:
> I had no idea we were hammering malloc this badly.  I temporarily  
> instrumented
> xmalloc to show usage patterns, then ran 'M4=src/m4 autoreconf -v'  
> to profile
> the m4 configure script before and after this patch.

Nice analysis!  And nice patch too.

Rene himself said that he thinks we abuse obstacks in the current  
implementation,
though I never took the time to figure out how to comb out the hair.

> on head, I may experiment with adding an obstack_regrow macro that
> I documented in the bug-m4 list.

That would be really interesting to see.  Especially if it finds its way
back to glibc eventually :-)

Cheers,
        Gary
- --
Gary V. Vaughan      ())_.  address@hidden
Research Scientist   ( '/   http://blog.azazil.net
GNU Hacker           / )=   http://www.gnu.org/software/{libtool,m4}
Technical Author   `(_~)_   http://sources.redhat.com/autobook




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