cygwin2 performance issue during compilation with autotools

Tue Dec 1 21:27:00 GMT 2009

Hello,
While making effort to port minitage [1] to windows, i had in mind to test
cygwin2 (setup-1.7.exe as i understood) as it as improved support for some
things like getaddrinfo and posix threads.
Indeed the goal is to recompile a bunch of libraries from sources, then make
them link together, and here come problems.
With cygwin2, i have a non identified GREAT loss of performances during
compilation (minimerge is yet another interface to ./configure && make && make
install for this package (python-2.6)).
./configure seems way much too long, make && make install seems or a bit slower.
It would be good to try to explain that :
Cygwin
----------
(minitage)$ time minimerge -NRv python-2.6 # compile/install only python 2.6
... minimerge & compilation output ...
real 8m50.782s
user 3m11.068s
sys 3m49.647s
(minitage)
Cygwin2
----------
(minitage2)$ time minimerge -NRv python-2.6 # compile/install only python 2.6
... minimerge & compilation output ...
real 23m26.250s
user 3m50.358s
sys 6m41.791s
(minitage2)$
I have read about path issues and network share. They don't seem to relate to
this case.
The twice environement are similar in installation, i made attention not to have
any cygwin isntallation in global $PATH.
Basicly, here are my notes about what's installed more than the default:
* archive
 tar
 zip
 unzip
 zlibdevel
* base
 sed
* devel
 mercurial
 minires
 minires-devel
 automake
 autoconf
 libtool 2.2.7a
 make
 patch
 pkg-config
 zlib
 subversion-1.6
 gcc4
 git
* editors
 vim7
* lib
 libbz2
 libzlib
 libiconv
 libiconv2
* net
 nfs-server (pour rpcgen / db-4.7)
 openssh
 openssl
 rsync
* python
 python-2.5.2
* shell
 bash
* utils
 bzip-2
 patchutils
* x11
 xrandr/devel
 glu/devel
 gl/devel
 x11/devel
[1] - http://www.minitage.org
-- 
Cordialement,
KiOrKY
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