Re: Cygwin can't handle huge packfiles?

From: Junio C Hamano <junkio@cox.net>
Date: Apr 6, 2006, 23:53 UTC
Message-ID: <7vk6a2uupy.fsf@assigned-by-dhcp.cox.net>
In-Reply-To: <20060406205724.12216.qmail@science.horizon.com>

linux@horizon.com writes:

Show 8 quoted lines

>> Right now we LRU the pack files and evict older ones when we
>> mmap too many, but the unit of eviction is the whole file, so it
>> would not help the case like yours at all.  It might be possible
>> to mmap only part of a packfile, but it would involve fairly
>> major surgery to sha1_file.c.
>
> The simplest solution seems to be to limit pack file size to a reasonable
> fraction of a 32-bit address space.  Say, 0.5 G.

I do not think that would help the original poster's situation where only 5 revs result in a 1.5G pack. I would _almost_ say "do not pack such a repository", but there is the initial cloning over git-aware transports which always results in a repository with a single pack.