[GDB 7.6/GCC 4.8.0] Slowdown in GDB macro processing for cores?

Paul Smith paul@mad-scientist.net
Tue May 28 15:25:00 GMT 2013


On Wed, 2013-05-22 at 19:14 -0400, Paul Smith wrote:
> On Wed, 2013-05-22 at 14:12 -0600, Tom Tromey wrote:
> > >>>>> "Paul" == Paul Smith <psmith@gnu.org> writes:
> > 
> > Paul> The interesting thing is both versions are constantly seeking and
> > Paul> reading to exactly the same location, over and over again.  However GDB
> > Paul> 4.6 does it many times more than GDB 7.5.1.  For example, I get this
> > Paul> combo:
> 
> I have gmon.out from the last "fast" commit and the first "slow" commit;
> I reduced the number of iterations in the macro to 4 (instead of 200) so
> the slow one would not take so long :-).
> 
> At this point I'm out of ideas.  Please let me know if there's more
> you'd like me to do...

Hi all.  I think I'm going to have to back up to GDB 7.5.1; the pain is
too great, when it does happen.

I'll maintain the core file and test setup, so let me know if there's
anything else I can do to help resolve this issue, or if there are
patches you'd like me to try.

Cheers!



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