Date: Sun, 23 Apr 2000 11:48:10 -0700 From: Charles Henrich <henrich@sigbus.com> To: Greg Lehey <grog@lemis.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Direct I/O Message-ID: <20000423114810.A50332@sigbus.com> In-Reply-To: <20000423104926.B4675@freebie.lemis.com> References: <20000421165145.A44188@sigbus.com> <20000423104926.B4675@freebie.lemis.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On the subject of Re: Direct I/O, Greg Lehey stated:
> On Friday, 21 April 2000 at 16:51:45 -0700, Charles Henrich wrote:
> > Is there anyway with FreeBSD's ffs to do direct filesystem I/O (a.k.a. XFS
> > under IRIX?)
>
> Well, XFS is a file system, not a direct I/O facility. What exactly do you
> mean?
Unbuffered I/O to the filesystem, where the bits are copied directly into the
space used by the process, or the kernel buffer being handed to the process,
removing the extra copy from kernel buffer to userland buffer.
-Crh
Charles Henrich Manex Visual Effects henrich@sigbus.com
http://www.sigbus.com/~henrich
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20000423114810.A50332>