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[Monotone-devel] Re: possibly of interest: new faster GNU linker

From: Koen Kooi
Subject: [Monotone-devel] Re: possibly of interest: new faster GNU linker
Date: Mon, 24 Mar 2008 16:14:02 +0100
User-agent: Thunderbird (Macintosh/20080213)

Hash: SHA1

Zack Weinberg schreef:
| I noticed that the GNU binutils folks have added a new experimental
| linker to their source repository.  It's ELF only, it doesn't appear
| to have been ported to anything but x86 (including amd64) yet, and I
| don't know whether it'd work on anything but Linux (I don't see any
| OS-specific code in there, which could be good or bad).  However, it's
| allegedly five times faster than the old linker.  Linking the monotone
| binary on my nice fast amd64 box, I get more like twice as fast, which
| is still rather nice for a simple change to $PATH.
| --- old
| 1.11user 0.25system 0:01.37elapsed
| 1.09user 0.27system 0:01.36elapsed
| 1.12user 0.25system 0:01.37elapsed
| --- new
| 0.46user 0.13system 0:00.60elapsed
| 0.47user 0.13system 0:00.60elapsed
| 0.47user 0.12system 0:00.60elapsed
| If you'd like to try it yourself, this is how:
| cd <where you keep source code>
| mkdir binutils
| cd binutils
| cvs -d :pserver:address@hidden:/cvs/src co binutils
| mkdir build
| cd build
| ../src/configure --prefix=$(cd .. && pwd)/install --enable-gold
| make all-gold -j4
| make install-gold
| add .../binutils/install/bin to $PATH
| There is also an even-more-experimental threaded mode (linking is
| easily parallelized) but I couldn't persuade it to be faster than
| without.  YMMV.  (If you want to try that, stick --enable-threads on
| the configure command line above, and then you have to add
| -Wl,--threads,--thread-count=<N> to your link line, where <N> is some
| plausible number.)

Does it install to DESTDIR/bin/ld or DESTDIR/bin/gold?



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