Re: git gc / git repack not removing unused objects?

From: Nicolas Pitre <nico@fluxnic.net>
Date: Feb 7, 2010, 01:16 UTC
Message-ID: <alpine.LFD.2.00.1002061935180.1681@xanadu.home>
In-Reply-To: <cccedfc61002060553w464d5d9drd582b3b3c3f35227@mail.gmail.com>

On Sat, 6 Feb 2010, Jon Nelson wrote:

Show 7 quoted lines

> Last night, the repo size was 153G after removing some commits and
> objects by way of git filter-branch.
> I'm using "du -sh" in the .git directory to determine the disk usage.
> 
> Before: 136G
> git repack -dAl
> After: 153G

Why are you using -A instead of -a ?

> Then, just to make sure of some things, I changed nothing and simply
> re-ran "git repack -dAl".
> After: 167G

Could you run 'git count-objects -v' before and after a repack in such cases as well?

> [pack]
>         packsizelimit = 256m

Why are you using this?

> pack.packsizelimit=2M

This is even worse.  150G / 2M per pack = approx 75000 packs.

What you should be aiming for is a _single_ pack for best performances. A couple packs is common and doesn't make much of a difference. A hundred packs is getting a bit large. But 75000 packs is totally insane.

Nicolas