[dm-devel] [PATCH 0/3] per-cpu in_flight counters for bio-based drivers

[Mike Snitzer]

On Fri, Nov 30 2018 at  9:43am -0500,
Mike Snitzer <snitzer at redhat.com> wrote:

> On Tue, Nov 27 2018 at  7:42pm -0500,
> Mikulas Patocka <mpatocka at redhat.com> wrote:
> 
> > These are the patches for per-cpu in_flight counters.
> 
> Do you have updated before vs after performance results for these
> changes?
> 
> I'd imagine they are comparable to your previous run (though that run
> included some other DM changes that I already staged).

Would like to see before vs after with:

http://git.kernel.dk/cgit/linux-block/log/?h=for-4.21/block
vs
https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git/log/?h=block-dm-4.21-inflight

(block-dm-4.21-inflight is based on latest for-4.21/block -- and it
contains DM changes in front of the block changes from this thread; I'd
prefer Jens take the changes like this rather than leave DM in a bit of
a mess for me/us to have to cleanup later)