From owner-freebsd-pf@FreeBSD.ORG  Wed Aug  1 15:42:20 2007
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From: Patrick Proniewski <patpro@patpro.net>
Date: Wed, 1 Aug 2007 17:42:19 +0200
To: "Greg Hennessy" <Greg.Hennessy@nviz.net>
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Cc: freebsd-pf@freebsd.org
Subject: Re: strange "throttling" issue with pf on xDSL connection
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On 01 ao=FBt 2007, at 15:37, Greg Hennessy wrote:

> You're possibly meeting an issue with tcp window scaling and =20
> keeping state
> on something other than Flags S/A.

While playing around with systat I've discovered that the transfer =20
rate can be as low as 20 KB/s and as high as 850 KB/s on a single =20
download from http://test-debit.free.fr, but the mean value will =20
always be around 120-150 KB/s when pf is active. =46rom one sample to =20=

another (every second), the transfer rate is very erratic.
If I disable pf on ext_if (set skip on $ext_if), the transfer rate =20
reaches quickly 850 KB/s and is almost stable. It decreases to =20
400-450 KB/s for 1 or 2 seconds, 3 or 4 times per minute.

regards,
patpro=