Re: Fwd: How to improve performance of 2.6 kernel

[Ralf Baechle <ralf@linux-mips.org>]

On Wed, Oct 19, 2005 at 11:12:22AM -0700, Mitchell, Earl wrote:

> If you are looking at network performance ...
> A while back I briefly looked at this and it
> looked like the per packet processing time had
> gone up significantly between 2.4.20 and
> 2.6.x. Problem was not NAPI which switches
> from interrupt to polling mode when you get a burst 
> of packets. I actually traced a single packet from Rx 
> to Tx. Unfortunately I didn't save my data and did 
> not isolate where increased time was being spent. 

A common cause for low networking performance is connection tracking.  Just
loading the module will have serious impact.

  Ralf