Re: [RFC] Cache negative delta pairs

From: Linus Torvalds <torvalds@osdl.org>
Date: Jun 29, 2006, 21:30 UTC
Message-ID: <Pine.LNX.4.64.0606291428150.12404@g5.osdl.org>
In-Reply-To: <Pine.LNX.4.64.0606291723060.1213@localhost.localdomain>

On Thu, 29 Jun 2006, Nicolas Pitre wrote:

Show 7 quoted lines

>
> On Thu, 29 Jun 2006, Linus Torvalds wrote:
> 
> > Instead of having a separate cache, wouldn't it be much better to just 
> > take the hint from the previous pack-file?
> 
> DOH!  ;-)

Btw, I think this could do with a flag to turn it on/off (but probably default to on).

The advantage of this patch is that it should guarantee that if everything is already packed, a repack will basically keep the pack identical.

However, that is obviously also the dis-advantage, since it means that repacking cannot improve packing. So adding a flag to say "please try to incrementally improve the pack" might well be worth it, even if this new behaviour would be the _default_.

Hmm? Jeff, does this work for your load?

		Linus