Re: [PATCH v3 net-next 08/14] mlx4: use order-0 pages for RX
From: Eric Dumazet <edumazet@google.com>
Date: 2017-02-13 23:23:01
On Mon, Feb 13, 2017 at 3:16 PM, Alexander Duyck [off-list ref] wrote:
Any plans to add the bulk page count updates back at some point? I
just got around to adding it for igb in commit bd4171a5d4c2 ("igb:
update code to better handle incrementing page count"). I should have
patches for ixgbe, i40e, and i40evf here pretty soon. That was one of
the reasons why I implemented __page_frag_cache_drain in the first
place. As I'm sure Jesper will probably point out the atomic op for
get_page/page_ref_inc can be pretty expensive if I recall correctly.As a matter of fact I did this last week, but could not show any improvement on one TCP flow, so decided to not include this in this patch series. Maybe the issue was more a sender issue, I might revisit this later.