From: Ingo Molnar <mingo@elte.hu>
Date: Wed, 27 Apr 2005 06:34:39 GMT
Subject: Re: Mercurial 0.3 vs git benchmarks
Message-ID: <20050427063439.GA22014@elte.hu>
In-Reply-To: <20050426135606.7b21a2e2.akpm@osdl.org>


* Andrew Morton <akpm@osdl.org> wrote:

> Magnus Damm <magnus.damm@gmail.com> wrote:
> >
> > My primitive guess is that it was because
> >  the ext3 journal became full.
> 
> The default ext3 journal size is inappropriately small, btw.  Normally 
> you should manually make it 128M or so, rather than 32M.  Unless you 
> have a small amount of memory and/or a large number of filesystems, in 
> which case there might be problems with pinned memory.
> 
> Mounting as ext2 is a useful technique for determining whether the fs 
> is getting in the way.

on ext3, when juggling patches and trees, the biggest performance boost 
for me comes from adding noatime,nodiratime to the mount options in 
/etc/fstab:

 LABEL=/ / ext3 noatime,nodiratime,defaults 1 1

	Ingo