Re: Announcing Dolt, a drop-in Libtool replacement which cuts build times in half

[Bob Friesenhahn]

On Wed, 9 Apr 2008, Peter O'Gorman wrote:
> (using bash)
> $ for y in {1..100}; do echo "func_notused${y} () {" >> parse.sh; for x
> in {1..10000}; do echo foo >> parse.sh; done; echo '}' >> parse.sh;
> done; echo 'echo Done' >> parse.sh

It seems that the slowest possible shell is selected by default. 
Maybe that is bad?

On Solaris 10 (Opteron)

% ptime bash parse.sh
Done

real        3.247
user        2.923
sys         0.322

% ptime zsh parse.sh
Done

real        0.991
user        0.877
sys         0.112

% ptime ksh parse.sh
Done

real        1.063
user        0.922
sys         0.141

On Solaris 10 (SPARC)

% ptime bash parse.sh
Done

real       10.417
user       10.128
sys         0.283

% ptime zsh parse.sh
Done

real        3.045
user        2.817
sys         0.227

% ptime ksh parse.sh
Done

real        3.432
user        3.255
sys         0.175

On FreeBSD 7.0 (Intel Xeon)

% time bash parse.sh
Done
bash parse.sh  5.63s user 0.18s system 99% cpu 5.808 total

% time zsh parse.sh
Done
zsh parse.sh  2.02s user 0.36s system 99% cpu 2.379 total

On Mac OS-X Leopard (G5)

% time bash parse.sh
Done
bash parse.sh  4.46s user 0.41s system 99% cpu 4.891 total

% time zsh parse.sh
Done
zsh parse.sh  1.35s user 0.39s system 83% cpu 2.074 total

% time ksh parse.sh
[ runs forever apparently ]

======================================
Bob Friesenhahn
address@hidden, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/