[Bug 31209] New: Feature Request - Kernel Samepage Merging
http://bugs.winehq.org/show_bug.cgi?id=31209 Bug #: 31209 Summary: Feature Request - Kernel Samepage Merging Product: Wine Version: unspecified Platform: x86-64 OS/Version: Linux Status: UNCONFIRMED Severity: normal Priority: P2 Component: -unknown AssignedTo: wine-bugs(a)winehq.org ReportedBy: 7WCbywQg3N2H(a)dyweni.com Classification: Unclassified I am playing a game (EVE Online) under Wine 1.5.8 and it consumes roughly 750MB to 1GB. I think a lot of that memory is static data. Multiple copies of the game can be run simultaneously (multi-boxing). I would like to know if Wine can take advantage of the kernel's KSM (Kernel Samepage Merging) feature. I know the KVM (Kernel Virtual Machines) already does this. This would be really awesome to have!! Thanks! -- Configure bugmail: http://bugs.winehq.org/userprefs.cgi?tab=email Do not reply to this email, post in Bugzilla using the above URL to reply. ------- You are receiving this mail because: ------- You are watching all bug changes.
http://bugs.winehq.org/show_bug.cgi?id=31209 Dan Kegel <dank(a)kegel.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |dank(a)kegel.com Severity|normal |enhancement --- Comment #1 from Dan Kegel <dank(a)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-win... 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. -- Configure bugmail: http://bugs.winehq.org/userprefs.cgi?tab=email Do not reply to this email, post in Bugzilla using the above URL to reply. ------- You are receiving this mail because: ------- You are watching all bug changes.
http://bugs.winehq.org/show_bug.cgi?id=31209 7WCbywQg3N2H(a)dyweni.com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |7WCbywQg3N2H(a)dyweni.com --- Comment #2 from 7WCbywQg3N2H(a)dyweni.com --- Created attachment 48143 --> http://bugs.winehq.org/attachment.cgi?id=48143 Part 1 of 2 - Patch to enable KSM in WINE - Works with Wine 1.7.16 -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
http://bugs.winehq.org/show_bug.cgi?id=31209 --- Comment #3 from 7WCbywQg3N2H(a)dyweni.com --- Created attachment 48144 --> http://bugs.winehq.org/attachment.cgi?id=48144 Part 2 of 2 - Patch to enable KSM in WINE - Works with Wine 1.7.16 -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
http://bugs.winehq.org/show_bug.cgi?id=31209 --- Comment #4 from 7WCbywQg3N2H(a)dyweni.com --- For what its work, I have been using these two patches (which I developed) with great success. Using these patches, I can squeeze in one extra instance of Eve Online on my machine (each instance consumes roughly 1GB of memory). The first introduces the KSM concept to select types of memory, and the second generalizes KSM to apply to all types of memory. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=31209 Jimmy Garpehäll <epaaj89(a)gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |epaaj89(a)gmail.com -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=31209 Ken Sharp <imwellcushtymelike(a)gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |download, patch, | |performance, source CC| |imwellcushtymelike(a)gmail.co | |m Component|-unknown |ntdll Version|unspecified |1.5.8 -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=31209 K1773R <K1773R(a)darkgamex.ch> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |K1773R(a)darkgamex.ch -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=31209 Sebastian Lackner <sebastian(a)fds-team.de> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |sebastian(a)fds-team.de -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=31209 Jactry Zeng <jactry92(a)gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jactry92(a)gmail.com -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=31209 --- Comment #5 from Sebastian Lackner <sebastian(a)fds-team.de> --- Since more and more people are subscribing to this bug report - this feature request was also submitted to the wine staging team, and we decided that it doesn't make sense to include it. Samepage merging has a lot of overhead in situations where it is not required, and running the same game multiple times is really more an exception than the usual situation. Take a look here for the full discussion: https://github.com/wine-compholio/wine-staging/issues/184 When adding such a feature, it should either it be possible to enable/disable it at runtime, or even better use some more intelligent logic to enable it only for pages which are shared across several processes with a high probability. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=31209 --- Comment #6 from K1773R <K1773R(a)darkgamex.ch> --- what about making it a registry option for the beginning? -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=31209 Qian Hong <fracting(a)gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |fracting(a)gmail.com -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=31209 --- Comment #7 from Ken Sharp <imwellcushtymelike(a)gmail.com> --- Can't the same be achieved with ksm-wrapper? https://github.com/unbrice/ksm_preload -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
participants (2)
-
wine-bugs＠winehq.org -
WineHQ Bugzilla