Re: Route cache performance under stress

[Ralph Doncaster <ralph@xxxxxxxxx>]

On Tue, 10 Jun 2003, David S. Miller wrote:

>    From: Simon Kirby <sim@xxxxxxxxxxxxx>
>    Date: Mon, 9 Jun 2003 18:53:12 -0700
>
>    Your CPU use is quite a bit higher than ours.
>
> Yeah, but his faster cpu is all being burnt to a crisp
> doing PIO accesses to the 3c59x card.
>
>    I found that once NAPI was happening, userspace seemed to get a
>    fairly decent amount of time.
>
> Unfortunately, NAPI won't help him with the current way the 3c59x
> driver works.  It needs to provide a way to use MEM I/O before NAPI
> would start to be of use to him.

Well, I've already decided to retire the 3c905cx cards and drop in a
couple of the Pro/1000 cards I recently bought.  Considering the Intel
GigE cards cost me ~$50 now and the 3Coms are ~$45, I'd say anyone willing
to update 3c59x.c has misplaced priorities or too much time on their
hands...

-Ralph