From: bert hubert <ahu@ds9a.nl>
To: P?l Halvorsen <paalh@ifi.uio.no>
Cc: linux-kernel@vger.kernel.org
Subject: Re: sendfile
Date: Wed, 30 Apr 2003 18:51:03 +0200 [thread overview]
Message-ID: <20030430165103.GA3060@outpost.ds9a.nl> (raw)
In-Reply-To: <Pine.LNX.4.51.0304301604330.12087@sondrio.ifi.uio.no>
On Wed, Apr 30, 2003 at 04:28:32PM +0200, P?l Halvorsen wrote:
> Hi!
>
> Does sendfile support UDP connections (SOCK_DGRAM)?
Try it. I bet it doesn't do so, and certainly not usably. Blasting UDP
frames is seldomly useful without checks, like NFS performs.
> Does sendfile remove ALL in-memory data copy operations?
Depends. With some network adaptors it might. Definition of 'zero-copy' is
somewhat misty. Some variants of zero-copy would actually be called
'one-copy' or 'minus-one-copy' in other contexts.
Regards,
bert
--
http://www.PowerDNS.com Open source, database driven DNS Software
http://lartc.org Linux Advanced Routing & Traffic Control HOWTO
next prev parent reply other threads:[~2003-04-30 16:38 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-30 14:28 sendfile Pål Halvorsen
2003-04-30 16:51 ` bert hubert [this message]
2003-04-30 19:12 ` sendfile Pål Halvorsen
2003-04-30 19:28 ` sendfile bert hubert
2003-04-30 21:57 ` sendfile Pål Halvorsen
2003-04-30 22:18 ` sendfile Mark Mielke
2003-04-30 22:34 ` sendfile Pål Halvorsen
2003-05-01 4:28 ` sendfile Mark Mielke
2003-05-01 15:25 ` sendfile Joseph Malicki
2003-05-01 21:17 ` sendfile Pål Halvorsen
2003-05-01 22:31 ` sendfile Chris Friesen
2003-05-01 23:32 ` sendfile Ketil Froyn
2003-05-02 9:02 ` sendfile Bernd Eckenfels
2003-05-02 2:41 ` sendfile Mark Mielke
2003-05-02 4:19 ` sendfile Chris Friesen
2003-05-02 21:06 ` sendfile Mark Mielke
2003-05-03 0:42 ` sendfile Miquel van Smoorenburg
2003-05-03 15:04 ` sendfile Mark Mielke
2003-05-03 12:52 ` sendfile Pål Halvorsen
2003-05-03 21:01 ` sendfile Pål Halvorsen
2003-05-04 0:53 ` sendfile Miquel van Smoorenburg
-- strict thread matches above, loose matches on Subject: below --
2001-05-24 8:44 sendfile Pål Halvorsen
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