Re: Kernel Routing and the IntraNet

From: Henrik Nordstrom
Date: Mon Sep 12 2005 - 16:28:26 EST

On Mon, 12 Sep 2005, Al Boldi wrote:

Is there a reason why bridging in linux is not faster than routing?

It is faster, but not very much so.

The main overhead seem to be elsewhere, mainly hardware related (interrupt handling, NIC driver, FSB bandwidth, PCI bandwidth and latency).

For best bridge performance make sure your kernel is NOT built with support for bridge firewalling. The bridge firewalling support adds a fair bit of overhead to bridgeing even if not used.

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