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Message-ID: <00b501c1a9ba$93544830$1a01a8c0@allyourbase>
From: "Dan Maas" <dmaas@dcine.com>
To: <root@chaos.analogic.com>
Cc: <linux-kernel@vger.kernel.org>
In-Reply-To: <fa.kdqjrkv.1d44lam@ifi.uio.no>
Subject: Re: TCP/IP Speed
Date: Wed, 30 Jan 2002 13:18:53 -0500
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> When I ping two linux machines on a private link, I get 0.1 ms delay.
> When I send large TCP/IP stream data between them, I get almost
> 10 megabytes per second on a 100-base link. Wonderful.
> 
> However, if I send 64 bytes from one machine and send it back, simple
> TCP/IP strean connection, it takes 1 millisecond to get it back? There
> seems to be some artifical delay somewhere.  How do I turn this OFF?

Stupid question - did you turn Nagle off?

int one = 1;
setsockopt(fd, SOL_TCP, TCP_NDELAY, &one);

(I think; typing from memory...)

Regards,
Dan

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