[Savannah-hackers-public] Re: [sr #107505] Please reduce gnash git repo size

[Jim Meyering]

Sylvain Beucler wrote:

> On Mon, Oct 25, 2010 at 10:30:13PM +0200, Jim Meyering wrote:
>> Sylvain Beucler wrote:
>> > Do you know about concurrency?  I.e. need we make the repo read-only
>> > for developers when we're doing such a repack?
>>
>> >From what I recall, that's not necessary.
>> I think (probably a gross simplification) it creates a big pack of
>> whatever's on hand, and then flips a ref (atomic rename) to make the new
>> pack's objects live, and then removes the packed (and now logically
>> unlinked) objects at its leisure. Any new objects that came in while
>> packing are simply not packed.
>
> I guess I'll try on a copy of the Gnash repo.
>
> It seems there's some kind of special condition in that project
> though, I don't get nearly the same ratio on my projects (admittedly
> not nearly as active either :)).

Those numbers are typical of a large project that's been converted from
e.g., cvs, and whose repository has never been properly compressed.