Re: Performance issue: initial git clone causes massive repack

From: Björn Steinbrink <b.steinbrink@gmx.de>
Date: Apr 7, 2009, 20:35 UTC
Message-ID: <20090407203536.GD4413@atjola.homenet>
In-Reply-To: <20090407202954.GA13501@coredump.intra.peff.net>

On 2009.04.07 16:29:54 -0400, Jeff King wrote:

Show 13 quoted lines

> On Tue, Apr 07, 2009 at 08:12:59PM +0200, Björn Steinbrink wrote:
> 
> > If so, that doesn't look it it's going to work out as easily as one
> > would hope. Robin said that both processes, git-upload-pack (which does
> > the rev-list) and pack-objects peaked at ~2GB of RSS (which probably
> > includes the mmapped packs). But the above pack-objects with --all peaks
> 
> I thought he said this, too, but look at the ps output he posted here:
> 
>   http://article.gmane.org/gmane.comp.version-control.git/115739
> 
> It clearly shows upload-pack with a tiny RSS, and pack-objects doing all
> of the damage.

That second git-upload-pack is the interesting one. upload-pack forks to do the rev-list stuff, without changing its process name, so it keeps being listed as upload-pack. And as the process already died, its RSS/VZS dropped to zero.

Björn