Re: [Automake-NG] [PATCH 2/2] [ng] perf: optimize 'am__strip_suffixes' for speed

[Bob Friesenhahn]

On Mon, 21 May 2012, Akim Demaille wrote:
> > + In mainline automake (commit v1.12-75-gd89da9c):
> >  - "make all"                           0.9 seconds
> >  - "make recheck"                       3.5 seconds
> >  - "make check RECHECK_LOGS="          14.1 seconds
>
> Congrats!

Yes, this is excellent work/progress.

Please add performance for 'make clean' to the list of commands to 
make faster.  This one should be low-hanging fruit.

Currently Automake does a 'rm -f' for many files individually and this 
is very slow.  Presumably GNU make can help make this better.  If we 
are willing to require GNU make, then perhaps we can be willing to 
require a working 'xargs' implementation to help optimize performance 
within command-line length limits.

Bob
--
Bob Friesenhahn
address@hidden, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/