From: bert hubert <ahu@ds9a.nl>
To: Ben Greear <greearb@candelatech.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: problems achieving decent throughput with latency.
Date: Sun, 2 Feb 2003 12:48:38 +0100 [thread overview]
Message-ID: <20030202114838.GA16831@outpost.ds9a.nl> (raw)
In-Reply-To: <3E3CCADA.6080308@candelatech.com>
On Sat, Feb 01, 2003 at 11:38:02PM -0800, Ben Greear wrote:
> I am testing my latency-insertion tool, and I notice that tcp will not use
> all of the available bandwidth if there is any significant amount of latency
> on the wire.
>
> For example, with 25ms latency in both directions, I see about 8Mbps
> bi-directional throughput.
Check if large windows are being used, if window scaling is enabled.
Regards,
bert
--
http://www.PowerDNS.com Open source, database driven DNS Software
http://lartc.org Linux Advanced Routing & Traffic Control HOWTO
http://netherlabs.nl Consulting
next prev parent reply other threads:[~2003-02-02 11:39 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-02 7:38 Ben Greear
2003-02-02 11:48 ` bert hubert [this message]
2003-02-03 5:14 ` David S. Miller
2003-02-03 15:37 ` Chris Friesen
2003-02-03 16:11 ` John Bradford
2003-02-03 16:19 ` bert hubert
2003-02-03 18:03 ` Ben Greear
2003-02-03 19:18 ` Eric Weigle
2003-02-04 5:19 ` David S. Miller
2003-02-04 7:50 ` Ben Greear
2003-02-04 7:39 ` David S. Miller
2003-02-04 8:42 ` Ben Greear
2003-02-04 8:41 ` David S. Miller
2003-02-04 8:51 ` Ben Greear
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