From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: Severe performance degradation of writev
Date: Mon, 07 Jul 2014 10:10:00 -0000 [thread overview]
Message-ID: <20140707101049.GI1803@calimero.vinschen.de> (raw)
In-Reply-To: <lpciht$pc5$1@ger.gmane.org>
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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
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next prev parent reply other threads:[~2014-07-07 10:10 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-06 22:28 jojelino
2014-07-06 22:35 ` jojelino
2014-07-07 10:10 ` Corinna Vinschen [this message]
2014-07-07 13:41 ` Corinna Vinschen
2014-07-09 16:46 ` David Rothenberger
2014-07-09 17:03 ` Corinna Vinschen
2014-07-09 17:19 ` David Rothenberger
2014-07-11 10:35 ` Corinna Vinschen
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