[dpdk-dev] [PATCH v9 00/18] distributor lib performance enhancements

[Bruce Richardson]

On Mon, Mar 06, 2017 at 09:10:15AM +0000, David Hunt wrote:
> This patch aims to improve the throughput of the distributor library.
> 
> It uses a similar handshake mechanism to the previous version of
> the library, in that bits are used to indicate when packets are ready
> to be sent to a worker and ready to be returned from a worker. One main
> difference is that instead of sending one packet in a cache line, it makes
> use of the 7 free spaces in the same cache line in order to send up to
> 8 packets at a time to/from a worker.
> 
> The flow matching algorithm has had significant re-work, and now keeps an
> array of inflight flows and an array of backlog flows, and matches incoming
> flows to the inflight/backlog flows of all workers so that flow pinning to
> workers can be maintained.
> 
> The Flow Match algorithm has both scalar and a vector versions, and a
> function pointer is used to select the post appropriate function at run time,
> depending on the presence of the SSE2 cpu flag. On non-x86 platforms, the
> the scalar match function is selected, which should still gives a good boost
> in performance over the non-burst API.
> 
> v9 changes:
>    * fixed symbol versioning so it will compile on CentOS and RedHat
> 

I've flagged a number of things that could do with being cleaned up in
the patchset. However, the idea itself of adding a new burst-mode to
improve distributor performance - and using vector matching to further
boost it - is a good improvement. Therefore

Series-Acked-by: Bruce Richardson <bruce.richardson at intel.com>