Re: newbie questions about git design and features (some wrt hg)

Matt Mackall wrote:

On Thu, Feb 01, 2007 at 12:58:42AM +0100, Jakub Narebski wrote:

quoted

Sidenote 1: it looks like git is optimized for speed of merge and checkout
(branch switching, or going to given point in history for bisect), and
probably accidentally for multi-branch repos, while Mercurial is optimized
for speed of commit and patch.

I think all of these things are comparable.

Hierarchical tree objects in git optimize for speed of merge and checkout
IMVHO, as you need only to check out one hash to know if you have to
descend into subdirectory, or if given subdirectory haven't changed.
Flat manifest file in Mercurial (and also "filename buckets") makes
commits faster, I think.

quoted

Sidenote 2: Mercurial repository structure might make it use "file-ids"
(perhaps implicitely), with all the disadvantages (different renames
on different branches) of those.

Nope.

How it is so, if the blobs (file contents) are stored filename hashed?
IIRC hg has some scheme to deal with renames, but it is file-id (file
identity) based AFAIK.

-- 
Jakub Narebski
Poland