I've been happily using cygwin for many years but I recently loaded VMware on
my system and it seemed pretty snappy, so much so I decided to see how it
compared to native execution. I was surprised to see that I could compile much
faster under VMware than on Cygwin on the same host.
I pasted a short script (bottom of message) that I hope one could just cut and
run to verify my results. To get a generally accessibly benchmark I download
and time the compile binutils-2.18.
My initial results where so skewed that I downloaded an updated cygwin.dll
(1.5.24.2 -> 1.5.25.2) but after the upgrade my performance dropped further.
Here are my results:
Compile binutils-2.18 (vanilla configure and make)
Cygwin (cygwin.dll version 1.5.25.15) (from time)
real 19m36.301s
user 13m45.618s
sys 5m31.415s
Cygwin (cygwin.dll version 1.5.24.2) (from time)
real 12m35.622s
user 13m56.539s
sys 6m57.319s
VMWare (Linux opensuse-vm 2.6.22.9-0.4/openSUSE 10.3 (i586))
real 3m9.116s
user 1m31.326s
sys 1m27.417s
So there is a 4-6x slowdown under native execution under cygwin, the
performance for remote compiles (either SMB or NFS mounted) is even slower,
somewhere in the neighborhood of 35-40 minutes to compile vs. 10 minutes under
VMware.
This script may not be perfect but here it is:
# run like this:
# bash -x doit.sh <obj-dir> <src-dir>
#
LEVEL=binutils-2.18
SRCDIR=$2
START=$PWD
if test -e $SRCDIR/$LEVEL.tar.gz
then
echo "No download needed"
else
cd $SRCDIR
wget ftp://ftp.gnu.org/gnu/binutils/$LEVEL.tar.gz
cd -
mkdir $SRCDIR/src
cd $SRCDIR/src
tar zxvf $SRCDIR/$LEVEL.tar.gz
cd $START
fi
mkdir $1
cd $1
rm -rf *
$SRCDIR/src/$LEVEL/configure
time make
--
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Problem reports: http://cygwin.com/problems.html
Documentation: http://cygwin.com/docs.html
FAQ: http://cygwin.com/faq/
