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Date: Tue, 13 Mar 2007 10:59:18 -0500
From: "Matthew D. Fuller" <fullermd@over-yonder.net>
To: Doug Poland <doug@polands.org>
Message-ID: <20070313155918.GJ56342@over-yonder.net>
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Cc: freebsd-stable@freebsd.org
Subject: Re: Testing UFS/Snapshots/Quotas on -STABLE
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On Tue, Mar 13, 2007 at 09:50:54AM -0500 I heard the voice of
Doug Poland, and lo! it spake thus:
> 
> In addition, it appears that compiling support for quotas in the
> kernel will force the Giant lock on UFS and I want to make sure I
> won't have a performance regression on the filesystem.

I can tell you that the impact will range from negligable to
significant, depending on the particular workload.

I have a RELENG_6 box that, for hysterical raisins, has the ports tree
on a partition with quotas, and a large 'portsnap update' gets VERY
jerky.


-- 
Matthew Fuller     (MF4839)   |  fullermd@over-yonder.net
Systems/Network Administrator |  http://www.over-yonder.net/~fullermd/
           On the Internet, nobody can hear you scream.