linux-kernel - [PATCH 0/1] mm, shmem: map few pages around fault address if they are in page cache

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Date:	Fri, 28 Feb 2014 14:18:50 -0800
From:	Ning Qu <quning@...gle.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mgorman@...e.de>, Rik van Riel <riel@...hat.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc:	Andi Kleen <ak@...ux.intel.com>,
	Matthew Wilcox <matthew.r.wilcox@...el.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Dave Chinner <david@...morbit.com>, Ning Qu <quning@...il.com>,
	linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, Ning Qu <quning@...gle.com>
Subject: [PATCH 0/1] mm, shmem: map few pages around fault address if they are in page cache

This is a follow-up patch for "mm: map few pages around fault address if they are in page cache"

We use the generic filemap_map_pages as ->map_pages in shmem/tmpfs.

Please consider applying.

=========================================================================
Below is just some simple experiment numbers from this patch, let me know if
you would like more:

Tested on Xeon machine with 64GiB of RAM, using the current default fault
order 4.

Sequential access 8GiB file
			Baseline 	with-patch
1 thread
    minor fault		205		101	
    time, seconds	7.94		7.82

Random access 8GiB file
			Baseline 	with-patch
1 thread
    minor fault		724		623
    time, seconds	9.75		9.84


Ning Qu (1):
  mm: implement ->map_pages for shmem/tmpfs

 mm/shmem.c | 1 +
 1 file changed, 1 insertion(+)

-- 
1.9.0.279.gdc9e3eb

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