Re: [PATCH 0/3] Provide more fine grained control over multipathing

From: Christoph Hellwig
Date: Wed Jun 06 2018 - 05:43:18 EST

On Wed, Jun 06, 2018 at 12:32:21PM +0300, Sagi Grimberg wrote:
> Huh? different paths == different controllers so this sentence can't
> be right... you mean that a path selector will select a controller
> based on the home node of the local rdma device connecting to it and
> the running cpu right?

Think of a system with say 8 cpu cores. Say we have two optimized

There is no point in going round robin or service time over the
two paths for each logic pre-cpu queue. Instead we should always
got to path A for a given cpu queue or path B to reduce selection
overhead and cache footprint.