From: "David S. Miller" <davem@davemloft.net>
To: bcrl@kvack.org
Cc: da-x@monatomic.org, drepper@gmail.com, linux-kernel@vger.kernel.org
Subject: Re: Status of AIO
Date: Mon, 06 Mar 2006 19:11:20 -0800 (PST) [thread overview]
Message-ID: <20060306.191120.58661202.davem@davemloft.net> (raw)
In-Reply-To: <20060307020736.GW20768@kvack.org>
From: Benjamin LaHaise <bcrl@kvack.org>
Date: Mon, 6 Mar 2006 21:07:36 -0500
> On Tue, Mar 07, 2006 at 04:04:11AM +0200, Dan Aloni wrote:
> > This somehow resembles the scatter-gatter lists already used in some
> > subsystems such as the SCSI sg driver.
>
> None of the iovecs are particularly special. What's special here is that
> particulars of the container make the fast path *cheap*.
Please read Druschel and Peterson's paper on fbufs and any followon
work before going down this path. Fbufs are exactly what you are
proposing as a workaround for the VM cost of page flipping, and the
idea has been around since 1993. :-)
As I mentioned Chapter 5 of Networking Algorithmics discusses this
in detail, and also covers many related attempts such as I/O
Lite.
next prev parent reply other threads:[~2006-03-07 3:11 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-06 6:24 Dan Aloni
2006-03-06 15:05 ` Phillip Susi
2006-03-06 21:18 ` Benjamin LaHaise
2006-03-06 22:53 ` Ulrich Drepper
2006-03-06 23:15 ` Phillip Susi
2006-03-08 7:09 ` Ulrich Drepper
2006-03-08 15:58 ` Phillip Susi
2006-03-06 23:33 ` Benjamin LaHaise
2006-03-07 0:24 ` David S. Miller
2006-03-07 0:42 ` Benjamin LaHaise
2006-03-07 0:51 ` David S. Miller
2006-03-07 1:39 ` Benjamin LaHaise
2006-03-07 2:04 ` Dan Aloni
2006-03-07 2:07 ` Benjamin LaHaise
2006-03-07 3:11 ` David S. Miller [this message]
2006-03-07 7:33 ` Dan Aloni
2006-03-07 3:06 ` David S. Miller
2006-03-07 16:35 ` Benjamin LaHaise
2006-03-07 1:34 ` Phillip Susi
2006-03-07 3:04 ` David S. Miller
2006-03-07 4:07 ` Phillip Susi
2006-03-07 6:02 ` David S. Miller
2006-03-07 16:06 ` Phillip Susi
2006-03-07 1:30 ` Dan Aloni
2006-03-07 1:37 ` Nicholas Miell
2006-03-07 1:37 ` Phillip Susi
2006-03-07 1:40 ` Benjamin LaHaise
2006-03-06 23:18 ` Phillip Susi
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