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Date: Thu, 27 Jan 2011 18:55:35 +0100
From: Damien Fleuriot <ml@my.gd>
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To: "Vogel, Jack" <jack.vogel@intel.com>
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Cc: "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org>,
	Jeremy Chadwick <freebsd@jdc.parodius.com>,
	"freebsd-pf@freebsd.org" <freebsd-pf@freebsd.org>
Subject: Re: High interrupt rate on a PF box + performance
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On 1/27/11 6:41 PM, Vogel, Jack wrote:
> Jeremy is right, if you have a problem the first step is to try the latest code.
> 
> However, when I look at the interrupts below I don't see what the problem is?
> The Broadcom seems to have about the same rate, it just doesn't have MSIX (multiple vectors).
> 
> Jack
> 
> 

My main concern is that the CPU %interrupt is quite high, also, we seem
to be experiencing input errors on the interfaces.

See for yourself the following munin graphs:
http://my.gd/fw_graphs/

igb0 = WAN interf
bce0 = LAN


Obviously we've had quite a traffic increase since the beginning of the
year, as shown by the PF statistics.

But jeez, the CPU %interrupt doubled or tripled...


You'll notice a drop in graphs between 23 and 25 january, this is when
we switched the CARP master to the backup firewall.