From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Felix Matathias <felix@nevis.columbia.edu>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: select() doesn't respect SO_RCVLOWAT ?
Date: Mon, 14 Mar 2005 13:24:24 +0000 [thread overview]
Message-ID: <1110806662.15927.108.camel@localhost.localdomain> (raw)
In-Reply-To: <Pine.LNX.4.61.0503111434040.30914@shang.nevis.columbia.edu>
On Gwe, 2005-03-11 at 20:26, Felix Matathias wrote:
> Dear Alan,
>
> I am positive. I can setsockopt, and then, getsockopt returns the value
> that I requested.
Ok I misremembered - its SNDLOWAT that is locked to one in Linux.
> Stevens very clearly states that SO_RCVLOWAT has a direct impact on
> select() and I assumed that this would be the case for Linux.
> What is the rationale for not complying with that ? Is it the micromanagement
> of select() that you dislike ? Isn't a significant reduction in the
> amount of read operations a real gain in high speed networking ?
I believe since we implement SO_SNDLOWAT that its a bug. Stevens and
1003.1g both agree with your expectations. The right list is probably
netdev@oss.sgi.com however.
Alan
next prev parent reply other threads:[~2005-03-14 13:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-10 21:58 select() doesn't respect SO_RCVLOWAT ? Felix Matathias
2005-03-11 5:43 ` Willy Tarreau
2005-03-11 19:09 ` Alan Cox
2005-03-11 20:26 ` Felix Matathias
2005-03-14 13:24 ` Alan Cox [this message]
2005-03-14 13:34 ` YOSHIFUJI Hideaki / 吉藤英明
2005-03-22 2:30 ` Robert White
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