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[Savannah-hackers-public] Re: [sr #107505] Please reduce gnash git repo
From: |
Sylvain Beucler |
Subject: |
[Savannah-hackers-public] Re: [sr #107505] Please reduce gnash git repo size |
Date: |
Mon, 25 Oct 2010 22:02:20 +0200 |
User-agent: |
Mutt/1.5.20 (2009-06-14) |
Hi,
On Sun, Oct 24, 2010 at 11:26:09PM +0200, Jim Meyering wrote:
> Sylvain Beucler wrote:
> > Jim,
> >
> > Can you have a look at this?
> >
> > The gnash repo can be packed from 760M (gc) to 60M (gc --aggressive).
>
> Nice! (in a way ;-)
>
> > Does that sound normal? Is there a risk to lose data with it?
>
> It is to be expected, if no one has ever run
> "git gc --aggressive" or an equivalent on this repository before.
>
> > If not, should we plan to do it on other repo too?
>
> Yes, I think so. "git gc" documentation suggests to run it
> "every few hundred change-sets or so".
>
> > On Sun, Oct 24, 2010 at 08:14:03PM +0000, Sylvain Beucler wrote:
> >>
> >> Follow-up Comment #2, sr #107505 (project administration):
> >>
> >> Wow, it's down to 60M after 20mn.
> >> I'll check with Jim to have an opinion on doing it on the real repo.
>
> As far as I know, there is no risk of data loss.
> I think of "git gc" as coalescing into a new "pack" any free objects,
> and compressing that resulting new pack.
> On the other hand, with --aggressive, it examines all objects
> (including those in previously coalesced packs) and does a global
> search for common/compressible things.
>
> Thus, if you have many separately-packed changes that would have
> been better compressed if they'd ended up in the same pack,
> --aggressive will yield significant benefit.
Thanks for the info.
Do you know about concurrency? I.e. need we make the repo read-only
for developers when we're doing such a repack?
--
Sylvain
- [Savannah-hackers-public] Re: [sr #107505] Please reduce gnash git repo size, Sylvain Beucler, 2010/10/24
- [Savannah-hackers-public] Re: [sr #107505] Please reduce gnash git repo size, Jim Meyering, 2010/10/24
- [Savannah-hackers-public] Re: [sr #107505] Please reduce gnash git repo size,
Sylvain Beucler <=
- [Savannah-hackers-public] Re: [sr #107505] Please reduce gnash git repo size, Jim Meyering, 2010/10/25
- [Savannah-hackers-public] Re: [sr #107505] Please reduce gnash git repo size, Sylvain Beucler, 2010/10/25
- [Savannah-hackers-public] Re: [sr #107505] Please reduce gnash git repo size, Jim Meyering, 2010/10/25
- [Savannah-hackers-public] Re: [sr #107505] Please reduce gnash git repo size, Sylvain Beucler, 2010/10/25
- [Savannah-hackers-public] Re: [sr #107505] Please reduce gnash git repo size, Jim Meyering, 2010/10/26