Re: Major network performance regression in 3.7

Eric Dumazet
2013-01-06T00:02:03Z

On Sun, 2013-01-06 at 00:29 +0100, Willy Tarreau wrote:

> > 2) Another possibility would be that Myri card/driver doesnt like very
> > well high order pages.
>
> It looks like it has not changed much since 3.6 :-/ I really suspect
> something is wrong with memory allocation. I have tried reverting many
> patches affecting the mm/ directory just in case but I did not come to
> anything useful yet.
>

Hmm, I was referring to TCP stack now using order-3 pages instead of
order-0 ones

See commit 5640f7685831e088fe6c2e1f863a6805962f8e81
(net: use a per task frag allocator)

Could you please post :

ethtool -S eth0