From: David Schwartz <davids@webmaster.com>
To: <gianni@ecsc.co.uk>
Cc: <linux-kernel@vger.kernel.org>
Subject: Re: TCP memory pressure question
Date: Fri, 22 Nov 2002 12:28:54 -0800 [thread overview]
Message-ID: <20021122202855.AAA322@shell.webmaster.com@whenever> (raw)
In-Reply-To: <1037966789.6079.33.camel@lemsip>
On 22 Nov 2002 12:06:29 +0000, Gianni Tedesco wrote:
>On Thu, 2002-11-21 at 21:34, David Schwartz wrote:
>> When a Linux machine has reached the tcp_mem limit, what will happen to
>>'write's on non-blocking sockets? Will they block until more TCP memory is
>>available? Will they return an error code? ENOMEM?
>from write(2) man page.
>EAGAIN Non-blocking I/O has been selected using O_NONBLOCK and the write
>would block.
So this would be a case where 'poll' or 'select' would return a write hit
for a socket but 'write' would return -1 and set errno to EAGAIN.
DS
next prev parent reply other threads:[~2002-11-22 20:21 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-21 21:34 TCP memory pressure question David Schwartz
2002-11-22 12:06 ` Gianni Tedesco
2002-11-22 20:28 ` David Schwartz [this message]
2002-11-23 0:06 ` Jamie Lokier
2002-11-23 0:28 ` David Schwartz
2002-11-23 22:34 ` Folkert van Heusden
2002-11-23 22:54 ` David Schwartz
-- strict thread matches above, loose matches on Subject: below --
2002-11-22 1:27 Nivedita Singhvi
2002-11-22 9:18 ` Alex Riesen
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