On Oct 12, 2005, at 5:55 PM, Marcin Dalecki wrote:
On 2005-10-12, at 04:42, Daniel Berlin wrote:
Checkouts will be about 30% slower with svn, just because it has to
write more data out to disk because of the working copy
Yes. Indeed. One suggestions comes immediately to my mind. Why
don't you provide some kind of COW (Copy on Write)? Or maybe one
should call it - checkout a copy on demand?
How does one portably do this? How does one non-portably do this? :-)
( Yes, I know, unionfs and the like, but across a reboot it dies. )
In emacs, you set version control, and then just use *.~1~, side
benefit:
$ cd gcc
$ time mkdiff . # find . -name \*.~1~ | while read f; do diff -c
$f ...; done
real 0m1.654s
user 0m0.248s
sys 0m0.946s
versus:
$ time cvs diff .
real 0m7.645s
user 0m0.631s
sys 0m2.082s
4.6x slower.
$ time svn diff .
real 0m16.380s
user 0m1.361s
sys 0m6.291s
9.9x slower. Wait, I thought svn diff was supposed to be faster? Hum.
