lkml.org 
[lkml]   [2018]   [Oct]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH v5 4/4] mm: Defer ZONE_DEVICE page initialization to the point where we init pgmap
On Mon, Oct 29, 2018 at 11:29 PM Michal Hocko <mhocko@kernel.org> wrote:
>
> On Mon 29-10-18 12:59:11, Alexander Duyck wrote:
> > On Mon, 2018-10-29 at 19:18 +0100, Michal Hocko wrote:
[..]
> > The patches Andrew pushed addressed the immediate issue so that now
> > systems with nvdimm/DAX memory can at least initialize quick enough
> > that systemd doesn't refuse to mount the root file system due to a
> > timeout.
>
> This is about the first time you actually mention that. I have re-read
> the cover letter and all changelogs of patches in this serious. Unless I
> have missed something there is nothing about real users hitting issues
> out there. nvdimm is still considered a toy because there is no real HW
> users can play with.

Yes, you have missed something, because that's incorrect. There's been
public articles about these parts sampling since May.

https://www.anandtech.com/show/12828/intel-launches-optane-dimms-up-to-512gb-apache-pass-is-here

That testing identified this initialization performance problem and
thankfully got it addressed in time for the current merge window.

\
 
 \ /
  Last update: 2018-10-30 07:55    [W:0.101 / U:0.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site