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From: "paulthomas2 at wanadoo dot fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/14563] octave built under Cygwin very slow
Date: Thu, 25 Mar 2004 14:26:00 -0000 [thread overview]
Message-ID: <20040325142603.28509.qmail@sources.redhat.com> (raw)
In-Reply-To: <20040312233606.14563.paulthomas2@wanadoo.fr>
------- Additional Comments From paulthomas2 at wanadoo dot fr 2004-03-25 14:25 -------
Subject: Re: octave built under Cygwin very slow
Danny and Wolfgang,
It seems that I was a bit too quick off the mark just now - thanks Ben!
So, the obvious question is how to do a build with sjlj disabled that is
consistent with the way in which octave handles exceptions. Does
-disable-sjlj-exceptions do it without throwing up unrequited references
during the linking?
Just to satisfy my curiosity and I would think, Ben's, just what is sjlj
(baby-talk, please) and is this yet another thing that I should know and
care about?
Paul T
Ben Diedrich wrote:
>Paul Thomas wrote:
>
>
>
>>Danny,
>>
>>I am away from base right now and do not have access to any of the
>>installations - Ben Diedrich can supply you with the version number for
>>the "good" gcc; ie. that of the octave-forge binary distribution. For
>>your information, Ben tells me that the slow build, with profiling,
>>runs slightly more than three times more slowly than the fast build with
>>profiling. Since the only significant difference in the profiles is the
>>presence in the slow build of sjlj calls,..... j'accuse! Otherwise, the
>>problem must lie in something outside the scope of the profiling.
>>
>>If "W" does not automatically get this, could you ensure that it is
>>forwarded to him, please?
>>
>>Paul Thomas
>>
>>PS Thank you both for your rapid responses to this problem; it is
>>something that has been perplexing us a lot.
>>
>>
>
>Here are the results of 'gcc -v' for the compiler that results in a fast octave. Note that it includes the
>option '--disable-sjlj-exceptions'.
>
>$ gcc -v
>Reading specs from /usr/lib/gcc-lib/i686-pc-cygwin/3.2/specs
>Configured with: /netrel/src/gcc-3.2-3/configure --enable-languages=c,c++,f77,java --enable-libgcj
>--enable-threads=posix --with-system-zlib --enable-nls --without-included-gettext --enable-interpreter
>--disable-sjlj-exceptions --disable-version-specific-runtime-libs --enable-shared --build=i686-pc-linux
>--host=i686-pc-cygwin --target=i686-pc-cygwin --enable-haifa --prefix=/usr --exec-prefix=/usr
>--sysconfdir=/etc --libdir=/usr/lib --includedir=/nonexistent/include --libexecdir=/usr/sbin
>Thread model: posix
>gcc version 3.2 20020927 (prerelease)
>
>Here are the results for the compiler that gives a slower octave. I noticed that this one has the option
>'--enable-sjlj-exceptions':
>
>$ gcc -v
>Reading specs from /usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/specs
>Configured with: /GCC/gcc-3.3.1-3/configure --with-gcc --with-gnu-ld --with-gnu-as --prefix=/usr
>--exec-prefix=/usr --sysconfdir=/etc --libdir=/usr/lib --libexecdir=/usr/sbin --mandir=/usr/share/man
>--infodir=/usr/share/info --enable-languages=c,ada,c++,f77,pascal,java,objc --enable-libgcj
>--enable-threads=posix --with-system-zlib --enable-nls --without-included-gettext --enable-interpreter
>--enable-sjlj-exceptions --disable-version-specific-runtime-libs --enable-shared --disable-win32-registry
>--enable-java-gc=boehm --disable-hash-synchronization --verbose --target=i686-pc-cygwin
>--host=i686-pc-cygwin --build=i686-pc-cygwin
>Thread model: posix
>gcc version 3.3.1 (cygming special)
>
>Ben
>
>
>
>
>
>
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14563
next prev parent reply other threads:[~2004-03-25 14:26 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-12 23:36 [Bug c++/14563] New: " paulthomas2 at wanadoo dot fr
2004-03-13 7:24 ` [Bug c++/14563] " pinskia at gcc dot gnu dot org
2004-03-13 8:06 ` paulthomas2 at wanadoo dot fr
2004-03-14 20:33 ` bangerth at dealii dot org
2004-03-24 9:52 ` paulthomas2 at wanadoo dot fr
2004-03-24 15:57 ` bangerth at dealii dot org
2004-03-24 16:38 ` paulthomas2 at wanadoo dot fr
2004-03-24 17:03 ` bangerth at dealii dot org
2004-03-24 21:07 ` Ben dot Diedrich at noaa dot gov
2004-03-24 22:58 ` dannysmith at users dot sourceforge dot net
2004-03-25 6:40 ` paulthomas2 at wanadoo dot fr
2004-03-25 13:43 ` bangerth at dealii dot org
2004-03-25 14:16 ` Ben dot Diedrich at noaa dot gov
2004-03-25 14:17 ` paulthomas2 at wanadoo dot fr
2004-03-25 14:26 ` paulthomas2 at wanadoo dot fr [this message]
2004-03-25 14:37 ` bangerth at dealii dot org
2004-03-25 15:37 ` Ben dot Diedrich at noaa dot gov
2004-03-25 16:41 ` paulthomas2 at wanadoo dot fr
2004-03-28 21:19 ` paulthomas2 at wanadoo dot fr
2004-03-28 22:28 ` pkienzle at users dot sf dot net
2004-03-31 0:21 ` paulthomas2 at wanadoo dot fr
2004-04-02 17:43 ` paulthomas2 at wanadoo dot fr
2004-04-02 19:55 ` bangerth at dealii dot org
2004-04-02 20:35 ` dannysmith at users dot sourceforge dot net
2004-04-02 20:41 ` pcarlini at suse dot de
2004-04-02 20:44 ` bangerth at dealii dot org
2004-04-03 9:10 ` paulthomas2 at wanadoo dot fr
2004-04-03 17:19 ` epanelelytha at kellertimo dot de
2004-04-03 17:54 ` paulthomas2 at wanadoo dot fr
2004-04-03 18:00 ` epanelelytha at kellertimo dot de
2004-04-03 18:24 ` paulthomas2 at wanadoo dot fr
2004-07-12 14:50 ` [Bug libstdc++/14563] new/delete much slower than malloc/free pinskia at gcc dot gnu dot org
2004-07-12 19:21 ` paulthomas2 at wanadoo dot fr
2004-07-12 20:55 ` bangerth at dealii dot org
2004-07-13 4:17 ` paulthomas2 at wanadoo dot fr
2004-07-28 2:50 ` ron_hylton at hotmail dot com
2004-07-28 3:57 ` ron_hylton at hotmail dot com
2004-07-28 6:03 ` [Bug target/14563] " pinskia at gcc dot gnu dot org
2004-07-29 4:23 ` ron_hylton at hotmail dot com
2004-08-08 9:24 ` paulthomas2 at wanadoo dot fr
2004-11-10 8:21 ` [Bug target/14563] [3.3/3.4/4.0 Regression] new/delete much slower than malloc/free because of sjlj exceptions giovannibajo at libero dot it
2004-11-10 8:21 ` giovannibajo at libero dot it
2004-11-10 9:10 ` dannysmith at users dot sourceforge dot net
2004-11-10 12:46 ` [Bug target/14563] " pinskia at gcc dot gnu dot org
2004-11-10 16:20 ` ron_hylton at hotmail dot com
2004-11-10 17:05 ` kjd at duda dot org
2004-11-13 11:03 ` paulthomas2 at wanadoo dot fr
2004-11-14 17:03 ` ken dot duda at gmail dot com
2004-11-14 18:04 ` paulthomas2 at wanadoo dot fr
2004-11-14 22:40 ` ken dot duda at gmail dot com
2005-05-12 14:53 ` pinskia at gcc dot gnu dot org
2005-05-12 14:54 ` pinskia at gcc dot gnu dot org
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