Re: [PATCH] abysmal e1000 performance (DITR)

[Jeff Garzik <jgarzik@xxxxxxxxx>]

Thayne Harbaugh wrote:
> On Thu, 2004-08-26 at 13:55 -0400, jamal wrote:
>
> > Ganesh,
> >
> > Can you please make this feature off by default and perhaps
> > accesible via ethtool for peopel who want to turn it on.
> > I just wasted a few hours and was bitten by this performance-wise.
> > Please consider disabling it.
>
> This is a *horrible* problem.  Even though it's fixable by passing a
> module parameter, the default bites those that *know* about it.  We have
> had customers bitten by this and customers that have insisted in
> swapping all the NICs in a cluster to Broadcom TG3 NICs.
>
> It's a black eye for Intel and a loss of business - that's the opinion
> of our customers.

If it's so bad we should disable it by default, either via the module 
parameter or via a kernel CONFIG_xxx option.
        Jeff