I've found some documentation. KSM is very interesting: while it was made for virtualized guest at first, it can be used for every process. The CERN use it already for the Large Hadron Collider (LHC).
Here's some papers on KSM: From Linux Weekly News: http://lwn.net/Articles/330589/ In french, from DFLP (bonne lecture!): http://linuxfr.org/2009/12/03/26207.html Here's the whole technical presentation http://www.kernel.org/doc/ols/2009/ols2009-pages-19-28.pdf (check out the "KSM at CERN" xavier Le jeudi 17 décembre 2009 13:01:21, Frédéric Grelot a écrit : > it works at the kernel, and I think it isn't limited to kvm. However, I'm > not an expert with it, and it may be confirmed by someone else. It anyone > has a F12 under its hand with KSM enabled, look at > /proc/kernel/vm/ksm/page_shared (or something like this), if it is > non-zero, and you don't have any KVM running, it means that it works... > > Frederic. > > ----- "Xavier Brochard" <[email protected]> a écrit : > > Le jeudi 17 décembre 2009 09:47:11, Frédéric Grelot a écrit : > > > I may also add that if you run KSM (Kernel Same page Merging) on the > > server > > > side, it may dramatically improve your RAM consumption, since all > > clients > > > use the same programs, and thus could share many pages. However, i > > know > > > that ksm runs fine on fedora (12), but I'm not sure if it has been > > ported > > > to ubuntu/debian/other systems. Please also note that KSM can use > > quite a > > > lot of cpu (but if you don't give him time, it will just not merge > > page > > > anymore and wait its turn, not lock your system). > > > > Isn't KSM only for KVM's virtualised servers ? Xavier [email protected] ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
