Re: [PATCH 4/4] gc --aggressive: three phase repacking

From: Duy Nguyen <pclouds@gmail.com>
Date: Mar 18, 2014, 05:16 UTC
Message-ID: <CACsJy8DZsH_2CpaUUpc5xyunHD42CN24m6Mb+9vsKyaRqJ6q3w@mail.gmail.com>
In-Reply-To: <20140318050727.GA14769@sigill.intra.peff.net>

On Tue, Mar 18, 2014 at 12:07 PM, Jeff King <peff@peff.net> wrote:

Show 13 quoted lines

>   [before]
>   real    0m28.824s
>   user    0m28.620s
>   sys     0m0.232s
>
>   [after]
>   real    0m21.694s
>   user    0m21.544s
>   sys     0m0.172s
>
> The numbers below are completely pulled out of a hat, so we can perhaps
> do even better. But I think it shows that there is room for improvement
> in the delta base cache.

There is definitely room for improvement in delta base cache: increasing cache size, better eviction strategies.. But I think it's orthogonal to gc --aggressive improvement. From what Linus described ---aggressive is more for archival purposes but I think people have been using it for upstream repos as well. Better packed repos could speed up current clients immediately (although this argument is somewhat flawed, server updates are usually at slower pace than clients..).

-- 
Duy