Re: [PATCH] reduce git-pack-objects memory usage a little more

From: Brian Downing <bdowning@lavos.net>
Date: Jul 13, 2007, 01:45 UTC
Message-ID: <20070713014502.GF19073@lavos.net>
In-Reply-To: <20070713014228.GE19073@lavos.net>

On Thu, Jul 12, 2007 at 08:42:28PM -0500, Brian Downing wrote:

> This patch breaks pack-objects pretty horribly:
> 
> :; PATH=~/src/git:$PATH /usr/bin/time ~/src/git/git-repack -a -d -f

[that's Git I'm repacking here]

Show 24 quoted lines

> :; ls -l .git/objects/pack
> total 153916
> -r--r--r-- 1 bdowning bdowning   1312136 2007-07-12 20:39 pack-9ac926ee1f5810c434707d3f816f5ad2cbd14668.idx
> -r--r--r-- 1 bdowning bdowning 156130933 2007-07-12 20:39 pack-9ac926ee1f5810c434707d3f816f5ad2cbd14668.pack
> 
> chain length = 1: 6182 objects
> chain length = 2: 66 objects
> chain length = 3: 27 objects
> chain length = 4: 20 objects
> chain length = 5: 15 objects
> chain length = 6: 9 objects
> chain length = 7: 5 objects
> chain length = 8: 5 objects
> chain length = 9: 6 objects
> chain length = 10: 4 objects
> chain length = 11: 6 objects
> chain length = 12: 4 objects
> chain length = 13: 3 objects
> chain length = 14: 3 objects
> chain length = 15: 2 objects
> chain length = 16: 2 objects
> chain length = 17: 1 object
> chain length = 18: 1 object
> chain length = 19: 1 object

-bcd