Re: [PATCH v3 net-next 0/4] net: low latency Ethernet device polling

On 21/05/2013 21:15, Ben Hutchings wrote:

On Tue, 2013-05-21 at 15:29 +0300, Eliezer Tamir wrote:

quoted

Many of the questions you asked are covered in our RFC cover letter, but
I will touch them briefly

On 21/05/2013 15:06, Alex Rosenbaum wrote:

quoted

1. It seem this patch does not cover epoll/select and such IO muxing APIs?

We are thinking about how to implement epoll support as one of the next
steps.

What benchmarks are you using to test poll/select/epoll?

[...]

I raised this issue back at Plumbers and I thought Jesse said poll() was
covered.  It's likely to be a bit of a toy without that.  Also, UDP?

The current patchset covers poll/select for UDP.
Adding poll/select for TCP should be simple, I will try to include it in the next version.

Epoll should see a gain from the above in the case where all the polled file descriptors are associated to the same device queue.
A fuller implementation, in the epoll itself would be needed to cover multiple queues/devices.