This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: 3.3 compile time regression (22400%)

From: Albert Chin <gcc at lists dot thewrittenword dot com>
To: gcc at gcc dot gnu dot org
Date: Tue, 18 Mar 2003 09:50:43 -0600
Subject: Re: 3.3 compile time regression (22400%)
References: <Pine.LNX.4.44.0303181300580.22005-100000@bellatrix.tat.physik.uni-tuebingen.de>
Reply-to: gcc at gcc dot gnu dot org

On Tue, Mar 18, 2003 at 01:13:52PM +0100, Richard Guenther wrote:
> Hi!
> 
> I'm experiencing huge compile time regression with todays 3.3 compared to
> 3.2 during compiling of the POOMA library. -ftime-report shows that the
> culprit is expand:
> 
> gcc-3.2:
> 
>  expand           :   0.83 ( 8%) usr   0.04 ( 8%) sys   0.94 ( 9%) wall
> 
> gcc-3.3:
> 
>  expand           :2151.80 (96%) usr  11.35 (44%) sys2181.19 (95%) wall

I'm experiencing the same problems on Solaris 9/SPARC, HP-UX 11.00 and
11i, and Redhat Linux 7.1 building LyX 1.3.0
(src/frontends/qt2/Dialogs.C). On Solaris and HP-UX, I run out of
memory. On RHL 7.1, build time takes 25 minutes.

On Solaris, -fno-default-inline brings the build time to 1 hour. It
brings the build time to 4 minutes on RHL 7.1.

-- 
albert chin (china at thewrittenword dot com)

References:
- 3.3 compile time regression (22400%)
  - From: Richard Guenther

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]