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Re: very very slow symbol searches
On Wed, Jan 22, 2003 at 05:16:29PM -0800, Martin M. Hunt wrote:
> More details. The slowdown is caused by using the glibc regex. Why
> would that make it so much slower? Don't know yet. Anyway forcing GDB
> to use the included regex in libiberty fixes the problem.
>
> 2003-01-02 Mark Kettenis <kettenis@gnu.org>
>
> * configure.in: Rewrite check for GNU regex and the
> --without-included regex option, and move it into the "Checks
> for
> library functions" section. This makes us use the system regex
> again by default on systems with version 2 of the GNU C library.
> This was apparently broken.
> * gdb_regex.h [!USE_INCLUDED_REGEX] (_REGEX_RE_COMP): Define.
> * acconfig.h (USE_INCLUDED_REGEX): Remove.
> * config.in, configure: Regenerated.
Sigh, let me gues, is your host glibc version 2.3? The regex engine
was rewritten, not always for the better.
Some performance issues were fixed recently in the glibc CVS.
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer