Re: [PATCH] don't use mmap() to hash files

From: Avery Pennarun <apenwarr@gmail.com>
Date: Feb 15, 2010, 19:19 UTC
Message-ID: <32541b131002151119o2f528ddv147d71d12d9d11fe@mail.gmail.com>
In-Reply-To: <alpine.LFD.2.00.1002150016110.1946@xanadu.home>

On Mon, Feb 15, 2010 at 12:48 AM, Nicolas Pitre <nico@fluxnic.net> wrote:

> Ideally you don't keep volatile objects into huge packs.  That's why we
> have .keep to flag those packs that are huge and pure so not to touch
> them anymore.

Of course the problem here is that as soon as you import a single (possibly volatile) 2GB file, your pack becomes "huge." So these heuristics stop working very well and start to need some revision.

Thanks for the clarification on packing and repacking. I might be able to use this method to come up with a better repacking/pruning algorithm in bup, and from there to perhaps forward it on to git.

Have fun,

Avery

$ cat FOOTERMessages come from the public archive at lore.kernel.org/git, fetched every hour. The front page is chosen and written each morning by an AI editor and can be wrong; the threads themselves are the record. About and API. For agents: an MCP server at https://gitlist.dev/mcp, and any thread, story or person page as Markdown by adding .md to its URL (or sending Accept: text/markdown). Details in /llms.txt.