On Tue, Apr 16, 2019 at 09:18:50AM -0400, Waiman Long wrote: > On 04/16/2019 09:10 AM, Peter Zijlstra wrote: > > On Mon, Apr 15, 2019 at 04:58:27PM -0400, Waiman Long wrote: > >> This series contain 2 follow-up patches to alleviate the performance > >> regression found in the page_fault1 test of the will-it-scale benchmark. > >> This does not recover all the lost performance, but reclaim a sizeable > >> portion of it. > >> > >> The regression was found on an Intel system. I have run the test on > >> an AMD system. The regression wasn't seen there. There are only minor > >> variations in performance. Perhaps the page fault path is quite different > >> between Intel and AMD systems. > > Can you please just fold this back into the appropriate patches? Trying > > to review all the back and forth is painful. > > I will send out an update part 2 patch with patch 1 of this series > merged into the writer spinning on reader patch. Patch 2 of this series > will be a standalone one.
Hmm, in that case I can fold it back too. So hold off on sending it. I thought #2 was a fixup for an earlier patch as well.
