Wei Liu
2013-Jun-24 10:18 UTC
Re: [PATCH net-next V3 1/3] xen-netback: split event channels support for Xen backend driver
On Mon, Jun 24, 2013 at 10:48:25AM +0100, Jan Beulich wrote:> >>> On 22.05.13 at 18:34, Wei Liu <wei.liu2@citrix.com> wrote: > > Netback and netfront only use one event channel to do TX / RX notification, > > which may cause unnecessary wake-up of processing routines. This patch adds a > > new feature called feature-split-event-channels to netback, enabling it to > > handle TX and RX events separately. > > > > Netback will use tx_irq to notify guest for TX completion, rx_irq for RX > > notification. > > While I can see the benefit for the frontend, does this really make > a lot of a difference to the backend considering that both rx and tx > handling get done on the same thread anyway? >Not for now. But I''m working on separating the backend handling routines. So if you''re thinking about backporting, I don''t think this is the material. Wei.