Severe performance degradation of writev

[Corinna Vinschen]

On Jul  7 07:28, jojelino wrote:
> 2008-07-27  Corinna Vinschen  <corinna@vinschen.de>
> 
>        * fhandler_socket.cc (fhandler_socket::send_internal): Send never
> more
>        then 64K bytes at once.  For blocking sockets, loop until entire data
>        has been sent or an error occurs.
>        (fhandler_socket::sendto): Drop code which sends on 64K bytes.
>        (fhandler_socket::sendmsg): Ditto.
> 
> This commit added workaround for KB823764. but it has brought another
> performance issue when writev sends <64k of data.

That's why the code contains that FIXME comment.  If you have a good
idea for simple code to split a message into the least number of pieces
to minimize the number of WsaSendTo calls...


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 819 bytes
Desc: not available
URL: <http://cygwin.com/pipermail/cygwin/attachments/20140707/32035d6c/attachment.sig>