Are their any good guides out there on how to use ksmctl to enable and tune KSM performance on Centos/RedHat At the moment the only guidelines I can find are from the following OLS paper, plus the Linux Kernel Docs. * http://www.kernel.org/doc/ols/2009/ols2009-pages-19-28.pdf * http://www.kernel.org/doc/Documentation/vm/ksm.txt On a basic dual core testbed with 4GB Ram and 4-5 VMs I've tried ksmctl start 60 5000 This resulted in a 5% system cpu load as it tried to recover shared space. Sadly I can't tell how well it is working as we don't have /sys/kernel/mm/ksm support in Centos. Has anyone got some guidelines on how to relate number of pages + interval to number of CPUs and Ram. Cheers Steve -- Bulletin.net <http://www.bulletin.net/> *Steven Ellis - Director of Worldwide Engineering,* *Bulletin.Net Inc* - http://www.bulletin.net/ *Ph* +64 9 307 1146 *Fax* +64 9 307 1148 *Mo* +64 21 321 673 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos-virt/attachments/20100211/31c3057b/attachment-0005.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: bulletin.png Type: image/png Size: 17721 bytes Desc: not available URL: <http://lists.centos.org/pipermail/centos-virt/attachments/20100211/31c3057b/attachment-0005.png>
