Re: Ethernet bridge performance

[Ben Greear <greearb@xxxxxxxxxxxxxxx>]

David S. Miller wrote:
> On Thu, 07 Aug 2003 09:57:14 -0700
> Ben Greear <greearb@xxxxxxxxxxxxxxx> wrote:
>
>
> > Btw, I've considered saving, say, 10k skbs on a list in my module,
> > allocated by GFP_KERNEL at module load time, and using them when
> > GFP_ATOMIC skb_alloc fails in the IRQ handling portion of the code....
> >
> > Anyone think that's a good idea? :)
>
> Not really.
>
> GFP_ATOMIC should not fail regularly under normal (even heavy load)
> operation.  If it does, it means the amount of reserved pages
> the kernel keeps around is not set correctly for your system.
>
> In 2.6.x, play with /proc/sys/vm/min_free_kbytes
Anything to set for 2.4?  I've looked for how to tune the 2.4 VM for
some time, but never found anything.

Ben


--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc  http://www.candelatech.com