Home Original page

Very slow link times on debug versions of C++ program onx86_64. Includes oprofile of ld...

Talbot, George Gtalbot@locuspharma.com
Wed Jun 20 15:25:00 GMT 2007 
Can you recommend a particular snapshot?  I'll give it a try.

--
George T. Talbot
<gtalbot@locuspharma.com>


> -----Original Message-----
> From: Daniel Jacobowitz [mailto:drow@false.org]
> Sent: Wednesday, June 20, 2007 11:20 AM
> To: Talbot, George
> Cc: H. J. Lu; binutils@sourceware.org
> Subject: Re: Very slow link times on debug versions of C++ program
> onx86_64. Includes oprofile of ld...
> 
> On Wed, Jun 20, 2007 at 09:58:42AM -0400, Talbot, George wrote:
> > Thanks for your quick reply.
> >
> > I'll see if I can come up with a testcase.
> >
> > Based upon my examination of oprofile results, I can say that ld is
> > _not_ spending all of its time in I/O, like the previous message
> > suggests.  Looking at the oprofile results, it's spending it's time
> > matching wildcards, though of what I'm not exactly sure.
> >
> > What exactly does the "wild_section"/"match_simple_wild" stuff do in
> > there?  I'm not sure that I fully understand it.  It appears to be
> > matching section names, yes?  That seems kinda weird--does a GCC
debug
> > compile have a lot more sections in the .o file?
> 
> Have you tried building a HEAD checkout or snapshot?  If not, I highly
> recommend it.  I think this has been fixed already.
> 
> --
> Daniel Jacobowitz
> CodeSourcery
More information about the Binutils mailing list