From: Felipe Contreras <felipe.contreras@gmail.com>
To: Stepan Kasal <kasal@ucw.cz>, GIT Mailing-list <git@vger.kernel.org>
Cc: Johannes Schindelin <johannes.schindelin@gmx.de>,
msysGit <msysgit@googlegroups.com>
Subject: RE: [PATCH/RFC] Always auto-gc after calling a fast-import transport
Date: Fri, 16 May 2014 08:08:09 -0500 [thread overview]
Message-ID: <53760db99f8ae_6899d4d2f8c6@nysa.notmuch> (raw)
In-Reply-To: <20140515053722.GB12133@camelia.ucw.cz>
Stepan Kasal wrote:
> From: Johannes Schindelin <johannes.schindelin@gmx.de>
> Date: Mon, 9 Apr 2012 13:04:35 -0500
>
> After importing anything with fast-import, we should always let the
> garbage collector do its job, since the objects are written to disk
> inefficiently.
>
> This brings down an initial import of http://selenic.com/hg from about
> 230 megabytes to about 14.
>
> In the future, we may want to make this configurable on a per-remote
> basis, or maybe teach fast-import about it in the first place.
Actually I tested this patch and it makes no difference. Before and
after the patch the repository size is exactly the same (and so is the
run-time).
That is because after the initial import there are no loose objects,
every thing is into one big pack, so `git gc --auto` does nothing.
> Could anyone on the list try to reproduce the performance problem
> that triggered this?
I'd say this patch is not doing anything in recent versions of Git.
--
Felipe Contreras
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prev parent reply other threads:[~2014-05-16 13:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-15 5:37 [PATCH/RFC] Always auto-gc after calling a fast-import transport Stepan Kasal
2014-05-15 6:56 ` Felipe Contreras
2014-05-16 13:08 ` Felipe Contreras [this message]
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