Re: [PATCH v2] RFC: clear 1G pages with streaming stores on x86

From: Matthew Wilcox
Date: Wed Jul 25 2018 - 10:38:59 EST


On Wed, Jul 25, 2018 at 05:02:46AM +0000, Elliott, Robert (Persistent Memory) wrote:
> Even with that, one CPU core won't saturate the memory bus; multiple
> CPU cores (preferably on the same NUMA node as the memory) need to
> share the work.

It's probably OK to not saturate the memory bus; it'd be nice if other
cores were allowed to get work done. If your workload is single-threaded,
you're right, of course, but who has a single-threaded workload these
days?!