[darcs-users] [Haskell-cafe] Re: poll: how can we help you contribute to darcs?

[Nicolas Pouillard]

Excerpts from Alberto Bertogli's message of Thu Aug 07 04:35:44 +0200 2008:
> On Wed, Aug 06, 2008 at 06:35:39PM -0700, Jason Dagit wrote:
> > On Wed, Aug 6, 2008 at 5:47 PM, Anatoly Yakovenko <aeyakovenko at gmail.com>wrote:
> > > I would gladly contribute to darcs if I could use it.  And I would use
> > > it if it was fast (at worst twice as slow as git) and stable for the
> > > simple things that i want to do.  So this is a chicken and egg problem
> > > for me.
> > 
> > Interesting.  Is your experience with darcs just with the GHC repository?
> > Except for the darcs1 exponential merge problem, I would be surprised if
> > darcs2 repositories are more than twice as slow as git for common
> > operations.
> 
> I don't want this to turn into "I'm faster/easier/whatever than you",
> and personally I don't think the speed is the issue with small
> repositories; but since you asked, and I've _just_ got into a situation
> like this...
> 
> While tracking a darcsweb issue that was posted to the darcs-users list
> (and it seems to be a darcs bug), I noticed that getting a diff for a
> given patch felt slow.
> 
> So when I saw your mail, I decided to make a quick comparison on the
> time it took to get a diff (in each SCM native format, so nobody had to
> play any conversion tricks.)
> 
> A cache-hot 'darcs changes -v --match "hash \
>     20080806124109-2067a-217fcccd6ce7becfb9a07f10e6c4a29cb00805f5.gz"'
> on a freshly-cloned darcs' repository takes 0.162s with and without
> colors.
> 
> A cache-hot 'git show 0ce3a7e5bd305e96c924fab1e3126480c665f017' on the
> linux kernel repository takes 0.012s with nice coloring, 0.010s without.
> 
> 
> That's easy math: 16 times slower (since darcs doesn't color the diff
> but only the word "hunk", I think it's fair to use the 0.010s number).

I think colors not the point, but I'd like to point out that darcs now
supports diff coloring:

  export DARCS_DO_COLOR_LINES=True

Regards,

-- 
Nicolas Pouillard aka Ertai
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