Re: Large repo and pack.packsizelimit

From: Thomas <th.acker66@arcor.de>
Date: May 9, 2012, 09:36 UTC
Message-ID: <loom.20120509T113505-740@post.gmane.org>
In-Reply-To: <alpine.LFD.2.02.1205081751011.21030@xanadu.home>

Nicolas Pitre <nico <at> fluxnic.net> writes:

Show 27 quoted lines

> 
> On Tue, 8 May 2012, Jeff King wrote:
> 
> > On Tue, May 08, 2012 at 05:13:13PM -0400, Nicolas Pitre wrote:
> > 
> > > > This should be fixed in git. Unfortunately, I don't know that it is as
> > > > trivial as just splitting the incoming stream; we would also have to
> > > > make sure that there were no cross-pack deltas in the result.
> > > 
> > > IMHO this is the wrong fix.  The pack size limit was created to deal 
> > > with storage media with limited capacity.  In this case, the repack 
> > > process should be told to limit its memory usage, and pack-index should 
> > > simply be taught to cope.
> > 
> > Hmm, you're right. I was thinking it helped to deal with memory
> > addressing issues for 32-bit systems, but I guess
> > core.packedGitWindowSize should be handling that. IOW, the 10G packfile
> > should work just fine for normal access.
> > 
> > However, the OP did say he got an "out of memory" error during the
> > clone. So maybe there is a problem to be fixed in index-pack there.
> 
> Was the OOM on the remote side (pack-objects) or on the local side 
> (index-pack) ?
> 
> Nicolas
>

To be exact I did the clone locally on the same machine and so the clone itself worked but I got the OOM during the first fetch. I "fixed" this by setting transfer.unpacklimit=100000 which caused only loose objects to be transfered. So in this case I think the OOM was on the remote side. But there is another OOM if I try to repack locally. It seems to me that neither pack-objects nor index-pack respekt pack.packsizelimit and always try to pack all objects to be transferred resp. all local loose objects in one pack. I could live wth the transfer.unpacklimit=100000 but the local OOM stops me from using the cloned repo. --- Thomas