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Date: Thu, 10 Sep 2009 14:31:14 -0500
From: Anthony Liguori <anthony@codemonkey.ws>
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Subject: Re: [Qemu-devel] [PATCH] [RESEND2] Qemu unmaintained?
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To: Avi Kivity <avi@redhat.com>
Cc: Amit Shah <amit.shah@redhat.com>, Mark McLoughlin <markmc@redhat.com>, Bernhard Kauer <kauer@os.inf.tu-dresden.de>, qemu-devel@nongnu.org

Avi Kivity wrote:
> For qemu.git I'd agree since it's undergoing a lot of churn.  
> Unfortunately it also feeds qemu-kvm.git which I try very hard to keep 
> regression-free (and finding and fixing regressions during a merge is 
> quite horrible), so I'd really appreciate it if qemu.git quality 
> didn't deteriorate.

Or more accurately, you'd prefer if there were no bugs in qemu so that 
you only had to deal with the bugs that were introduced in qemu-kvm.

That would be nice for you of course :-)  But it's unrealistic to 
compare the two. 

$ git log --since='1 Month ago' --no-merges qemu-kvm/master 
--committer='Avi Kivity' --pretty=format:'%an' | wc -l
5
$ git log --since='1 Month ago' --no-merges qemu-kvm/master 
--committer='Marcelo Tosatti' --pretty=format:'%an' | wc -l
5

$ git log --since='1 Month ago' --no-merges origin/master 
--committer='Anthony Liguori' --pretty=format:'%an' | wc -l
251

So there are going to be at least 25x more regressions introduced from 
upstream qemu than what are introduced in qemu-kvm.

> (and we're quite far from catching every regression btw).
>
> Anthony, how long are your test cycles?

Depends on the number of regressions.  I can usually get through testing 
in 4-5 hours when everything works.  Everything usually doesn't work though.

Regards,

Anthony Liguori