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Date: Mon, 26 Dec 2005 20:15:51 -0500
From: Mike Jakubik <mikej@rogers.com>
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To: Mihai Tanasescu <mihai@duras.ro>
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Cc: freebsd-performance@freebsd.org
Subject: Re: Device polling heavy traffic
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Mihai Tanasescu wrote:
> The problem:
> If I ping this machine or anything that is routed through it I get 
> response times of 10-15-30 ms and once in 30 seconds a packet is lost.
>
> If I disable kernel.polling.enable then I get response times of 1-2-3 
> ms but I also get a lot of interrupts and a kernel panic after about 
> 20 min.

You should not be getting a panic, unless you have bad hardware. Can you 
provide more details of the panic? Also, provide the version of freebsd, 
any custom kernel configuration, and attach output of dmesg.