Re: Mercurial 0.4b vs git patchbomb benchmark
- From
- Matt Mackall <mpm@selenic.com>
- Date
- May 3, 2005, 03:29 UTC
- Message-ID
- <20050503032916.GE22038@waste.org>
- In-Reply-To
- <Pine.LNX.4.58.0505021932270.3594@ppc970.osdl.org>
On Mon, May 02, 2005 at 07:48:29PM -0700, Linus Torvalds wrote:
Show 8 quoted lines
> > > On Mon, 2 May 2005, Matt Mackall wrote: > > > > Umm.. I am _not_ calculating the SHA of the delta itself. That'd be > > silly. > > It's not silly.
The delta is not the object I care about and its representation is arbitrary. In fact different branches will store different deltas depending on how their DAGs get topologically sorted. The object I care about is the original text, so that's the hash I store.
> In other words, you need to hash the metadata too. Otherwise how do you > consistency-check the _collection_ of files?
Well naturally, I hash the metadata too. For every change, there's a toplevel changeset hash that is the hash of the entire project state at that time. And it's all signable and so on. Just like git and just like Monotone.
-- Mathematics is the supreme nostalgia of our time.