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Subjectsendfile support in linux
I'm trying to find out more about sendfile(2).  So far, from what I've
gathered, it sounds like the requirements for it are (please correct me if
I'm wrong):

1. A kernel with sendfile support (i.e. 2.4.X)
2. A network card capable of doing the TCP checksum in the hardware
3. The application must support sendfile

Do you know what applications support zerocopy (sendfile)? I noticed that a
zerocopy NFS patch was added to the 2.5.x tree. Does the 2.4.X NFS daemon
support zerocopy? Does samba support zerocopy and if so what version?

Only me,
Stanley Yee

-----Original Message-----
From: Gianni Tedesco []
Sent: Thursday, January 23, 2003 1:14 AM
To: Stanley Yee
Cc: Linux Kernel Mailing List
Subject: Re: Zero copy in 2.4 kernels

On Wed, 2003-01-22 at 01:48, Stanley Yee wrote:
> Is the zero copy function enabled by default in the 2.4.X kernels? If so
> which kernel version and what do I need to do to enable it? Thanks for
> time.

sendfile(2) does zero-copy writes from files to sockets, works on any
version of 2.4 AFAIK.


// Gianni Tedesco (gianni at scaramanga dot co dot uk)
lynx --source | gpg --import
8646BE7D: 6D9F 2287 870E A2C9 8F60 3A3C 91B5 7669 8646 BE7D
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