Re: [PATCH] multi item packed files
- From
- Chris Mason <mason@suse.com>
- Date
- Apr 22, 2005, 23:55 UTC
- Message-ID
- <200504221955.15422.mason@suse.com>
- In-Reply-To
- <200504221632.26278.mason@suse.com>
On Friday 22 April 2005 16:32, Chris Mason wrote:
Show 5 quoted lines
> If I pack every 64k (uncompressed), the checkout-tree time goes down to > 3m14s. That's a very big difference considering how stupid my code is .git > was only 20% smaller with 64k chunks. I should be able to do better...I'll > do one more run. >
This run also packed tree files together (everything produced by write-tree went into a packed file), but not the commits. I estimate I could save about another 168m by packing the tree files and commits into the same file with the blobs, but this wouldn't make any of the times below faster.
git - original (28k commits) packed FS size 2,675,408k 1,723,820k read-tree 24.45s 18.9s checkout-cache 4m30s 3m5s patch time 2h30m 1h55m
The format for the packed files could be smarter, such that it didn't require decompressing the whole packed file to read one item. I would guess I could get another 20% checkout-cache performance out of it via more tuning, and probably another 10% of space savings.
Of course, none of this is likely to convince you ;) If you decide later on it's worthwhile, I don't think it would be difficult to add then.
-chris