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Date: Mon, 12 Jul 2010 16:43:53 +1000
From: Emil Mikulic <emikulic@gmail.com>
To: Jeremy Chadwick <freebsd@jdc.parodius.com>
Message-ID: <20100712064352.GC50043@dmr.ath.cx>
References: <20100711182511.GA21063@soda.CSUA.Berkeley.EDU>
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Cc: freebsd-stable@freebsd.org, Richard Lee <ricky@csua.berkeley.edu>
Subject: Re: Serious zfs slowdown when mixed with another file system
 (ufs/msdosfs/etc.).
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On Sun, Jul 11, 2010 at 02:45:46PM -0700, Jeremy Chadwick wrote:
> On Sun, Jul 11, 2010 at 02:12:13PM -0700, Richard Lee wrote:
> > vfs.zfs.zio.use_uma is already 0.  It looks to be the default, as I never
> > touched it.
> 
> Okay, just checking, because the default did change at one point

And changed back (to zero) in rev 209261:
http://article.gmane.org/gmane.os.freebsd.devel.cvs/395961