From: Matt Mackall <mpm@selenic.com>
To: David Chinner <dgc@sgi.com>
Cc: Andi Kleen <andi@firstfloor.org>, xfs-oss <xfs@oss.sgi.com>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/9]: Reduce Log I/O latency
Date: Thu, 22 Nov 2007 18:21:41 -0600 [thread overview]
Message-ID: <20071123002141.GU19691@waste.org> (raw)
In-Reply-To: <20071122230922.GZ114266761@sgi.com>
On Fri, Nov 23, 2007 at 10:09:22AM +1100, David Chinner wrote:
> On Fri, Nov 23, 2007 at 09:29:09AM +1100, David Chinner wrote:
> > On Thu, Nov 22, 2007 at 12:10:29PM -0600, Matt Mackall wrote:
> > > If I've got XFS on filesystems A and B on the same spindle (or volume
> > > group?) and my real RT I/O takes place only on B, then I want log
> > > flushing to happen in RT on B. But -never on A-. If I can do this with
> > > a tunable, I'm perfectly happy.
> >
> > No, not another mount option. I'm just going to drop this one for
> > now...
>
> Actually, I might change it to use the highest non-rt priority, which
> would solve the latency issues in the normal cases and still leave
> the RT rope dangling for those that want to use it.
>
> Is that an acceptible compromise, Matt?
Yes, that's perfectly fine.
--
Mathematics is the supreme nostalgia of our time.
next prev parent reply other threads:[~2007-11-23 0:22 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20071122003339.GH114266761__34694.2978365861$1195691722$gmane$org@sgi.com>
2007-11-22 0:49 ` [PATCH 2/9]: Reduce Log I/O latency Andi Kleen
2007-11-22 1:12 ` David Chinner
2007-11-22 2:57 ` Matt Mackall
2007-11-22 3:41 ` David Chinner
2007-11-22 7:25 ` Matt Mackall
2007-11-22 10:31 ` David Chinner
2007-11-22 18:10 ` Matt Mackall
2007-11-22 22:29 ` David Chinner
2007-11-22 23:09 ` David Chinner
2007-11-23 0:21 ` Matt Mackall [this message]
2007-11-23 0:20 ` Matt Mackall
2007-11-22 3:28 ` Stewart Smith
2007-11-22 12:06 ` Andi Kleen
2007-11-22 13:15 ` David Chinner
2007-11-23 2:53 ` Andi Kleen
2007-11-23 4:03 ` David Chinner
2007-11-23 12:01 ` Andi Kleen
2007-11-24 18:43 ` Matt Mackall
2007-11-22 0:33 David Chinner
2007-11-26 2:11 ` Lachlan McIlroy
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