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Date: Mon, 05 Jul 2010 12:10:17 -0400
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Subject: Re: 8.0 network problem
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On 7/4/2010 8:52 PM, David Warren wrote:
> Hi all,
>
>       I've got a persistent problem with my LAN.  I'm running a FreeBSD 8.0
> box as a home server performing the following functions for wired and
> wireless networks: router; firewall; DHCP server; and file server.  For what
> it's worth, I've got ZFS up and running as the main filesystem.  The
> recurring issue is that file transfers from the FreeBSD box to computers on
> the wired network (gigabit) start out fast and then become agonizingly
> slow.  I'm sharing home directories over Samba, and those transfers work
> briefly and then tail off to a few kilobytes per second.  The failure is
>

I remember having a simmilar issue, back in the early 7.x days. Try the 
following tunnables.

net.inet.tcp.hostcache.expire=1
net.inet.tcp.inflight.enable=0

Thanks.