Subject: Re: TSO on wm(4) (Intel Pro/1000): i82546 vs i8254EI vs others?
To: Jonathan Stone <>
From: Jason Thorpe <>
List: tech-net
Date: 05/22/2005 15:29:12
On May 22, 2005, at 12:35 PM, Jonathan Stone wrote:

> The 82544 works for me, insofaras ttcp works with TSO enabled;
> but I don't see a performance gain. Is there a software workaround?
> (The words "at one point" hint that way.)
> If not, then on balance I'd prefer that wm(4) not set the CSUM_TSOv4
> capability on 82544 chips.  Objections?  Comments?

It reduces CPU load "a little", and Linux still leaves it enabled on  
those chips.  So why not?

-- thorpej