Hi Pavlos,

On Thu, May 03, 2018 at 12:45:42PM +0200, Pavlos Parissis wrote:
> Hi,
> Linux kernel version 4.14 adds support for zero-copy from user memory to TCP 
> sockets by setting
> MSG_ZEROCOPY flag. This is for the sending side of the socket, for the 
> receiving side of the socket
> we need to wait for kernel version 4.18.
> Will you consider enabling this on HAProxy?
> More info can be found here, 
> https://www.kernel.org/doc/html/latest/networking/msg_zerocopy.html

After some discussion with Willy, we're not sure it is worth it.
It would force us to release buffer much later than we do actually, it can't
be used with SSL, and we already achieve zero-copy by using splicing.

Is there any specific case where you think it'd be a huge win ?



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