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Date: Fri, 16 Jun 2006 12:10:28 -0700
From: Darrin Chandler <dwchandler@stilyagin.com>
To: "J.D. Bronson" <jbronson@wixb.com>
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Cc: freebsd-questions@freebsd.org
Subject: Re: pf + ftp throughput
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On Fri, Jun 16, 2006 at 01:59:01PM -0500, J.D. Bronson wrote:
> For example...moving a 50MB file:
> 
> 'keep state' = 11-12MB/sec over 100MB-FDX
> 'modulate state = 6-7MB/sec over 100MB-FDX
> 
> ..it took me a while to determine the culprit here - but I am curious 
> as to why this is the case?

Since modulate state substitues its own high quality random sequence for
the TCP stream in both directions, a wimpy CPU or similar problem could
easily cause this, I think. Still, I'm surprised to see a 50% hit from
using modulate state.

-- 
Darrin Chandler            |  Phoenix BSD Users Group
dwchandler@stilyagin.com   |  http://bsd.phoenix.az.us/
http://www.stilyagin.com/  |