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Date:      Sun, 5 Nov 2000 20:01:03 -0600 (CST)
From:      Mike Silbersack <silby@silby.com>
To:        Kris Kennaway <kris@FreeBSD.ORG>
Cc:        "Richard A. Steenbergen" <ras@e-gerbil.net>, David Greenman <dg@root.com>, freebsd-net@FreeBSD.ORG
Subject:   Re: tcp sendspace/recvspace
Message-ID:  <Pine.BSF.4.21.0011051959580.40245-100000@achilles.silby.com>
In-Reply-To: <20001105175722.A8886@citusc17.usc.edu>

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On Sun, 5 Nov 2000, Kris Kennaway wrote:

> Perhaps it was a bug, but I used to see e.g. FTP transfers which were
> running at full speed totally monopolizing my modem bandwidth (then a
> 14.4k), and other sessions not being able to receive their "fair
> share". Tweaking net.inet.tcp.recvspace to give only a second or two
> worth of data transfer reduced the latency to acceptable levels.
> 
> Maybe this has been fixed by now - I haven't noticed it since I
> upgraded to a 56k modem. I'll try increasing my system to 32768
> and see if it has any effect.
> 
> Kris

Isn't that more related to the length of the interface queue for PPP?  I
think Archie tweaked it (or was going to) when he changed how packets
overflowing the queue are handled.

Mike "Silby" Silbersack



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