[Bug 31209] Feature Request - Kernel Samepage Merging

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=31209

Dan Kegel <dank at kegel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dank at kegel.com
           Severity|normal                      |enhancement

--- Comment #1 from Dan Kegel <dank at kegel.com> 2012-07-13 09:10:17 CDT ---
For what it's worth, Microsoft has a similar feature that is on by
default in Windows 8:

http://blogs.msdn.com/b/b8/archive/2011/10/07/reducing-runtime-memory-in-windows-8.aspx

Linux's feature is described here:
http://www.kernel.org/doc/Documentation/vm/ksm.txt

It might be challenging to get this right, since that document advises
against using the feature indiscriminately.
You could try it yourself by e.g. adding
  madvise(base, size, MADV_MERGEABLE);
into NtAllocateVirtualMemory() in dlls/ntdll/virtual.c.

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