Re: Packfile can't be mapped

From: Shawn Pearce <spearce@spearce.org>
Date: Aug 29, 2006, 05:33 UTC
Message-ID: <20060829053312.GB24594@spearce.org>
In-Reply-To: <20060829045239.GB24479@spearce.org>

Shawn Pearce <spearce@spearce.org> wrote:

Show 9 quoted lines

> This tree delta version came out pretty good.  The pack with tree
> deltas is 874 MiB.  Quite a reduction in size.  fast-import takes
> about 20 minutes to convert its 20 GiB input file into this 874 MiB
> pack.  Producing the 20 GiB input file from the 3 GiB CVS ,v
> files takes about 4 hours with Jon's modified cvs2svn.
> 
> Jon has started a `git-repack -a -f` with aggressive depth and
> window sizes.  He estimated it may need another 2.5 hours to process.
> Hopefully I'll hear more details tomorrow.

I just heard from Jon:

> git-repack -a -f --window=50 --depth=5000
> 100% CPU for 60 minutes
> 1.2GB resident memory
> Final pack size is 451,203,363 bytes.

So with very agressive delta depth and window sizes git-repack took a while to run but came very close to the best packed size from previous Mozilla CVS import attempts. I think we'd still like to make the final historical pack smaller than that.

-- 
Shawn.