From: Jeff Garzik <jgarzik@pobox.com>
Date: Mon, 27 Jun 2005 05:31:25 GMT
Subject: Re: git-local-pull
Message-ID: <42BF8F2D.1070808@pobox.com>
In-Reply-To: <Pine.LNX.4.58.0506262213220.19755@ppc970.osdl.org>

Linus Torvalds wrote:
> 
> On Sun, 26 Jun 2005, David S. Miller wrote:
> 
>>I tried to start using git-clone-script to clone repositories
>>locally.  It crunches on the disk for a couple of seconds,
>>that's fine, but then I notice the disk activity stop and
>>git-local-pull becomes cpu bound and grows to 80MB in size
>>over the course of 5 minutes.
> 
> 
> Try adding "-l" to the git-local-pull command line, to make it do 
> hardlinks by default (and fall back to a copy if that fails).
> 
> 
>>Is this a side effect of the new pack/unpack stuff?
> 
> 
> Nope, nothing uses that yet. 
> 
> I think the 80MB is just because it built up the object relationship for 
> the whole kernel db there. I don't know what the 5 minutes of CPU are, 
> though, it should just be copying stuff (and at 250MB in and 250MB out, 
> that's a lot of stuff to copy, but it shouldn't be five minutes worth, 
> especially if it's all cached and you see a pegged CPU).

FWIW, I notice that git-diff-tree uses >100MB of RAM, on a large 
git-pull-script run.  It's generating the diffstat output, AFAICS.

	Jeff