Subject: Re: Experimental zero-copy for TCP and UDP transmit-side
To: Tomas Svensson <>
From: Jason R Thorpe <>
List: current-users
Date: 05/10/2002 08:13:05
On Fri, May 10, 2002 at 12:00:28PM +0200, Tomas Svensson wrote:

 > lukemftpd can't utilize zero-copy by default? It's not using mmap()
 > and it's overwriting it's buffer immediately after write() returns.

It is possible to still see some benefit in this case, just not as much.
(I have some theories as to why, but I'd like to confirm them before
elaborating further :-)

        -- Jason R. Thorpe <>