Re: [PROPOSAL] KSM support for KVM hosts

2014-04-27 Thread Laszlo Hornyak
Hi David, The ksmd process takes quite some CPU time and keeps it at a constant level even when it is no longer able to find new pages to merge. The trick the dynamic configuration would do is to decide when is it safe to take some CPU-time and spend it on decreasing memory usage. Since in the age

Re: [PROPOSAL] KSM support for KVM hosts

2014-04-27 Thread David Nalley
On Sun, Apr 27, 2014 at 3:48 AM, Laszlo Hornyak wrote: > Hi All, > > Currently Cloudstack does not manage the Linux Kernel SamePage Merger [1]. > A KSM support would allow the operator of the cloud to gain high VM > densities in the cloudstack environment by merging the redundant memory > pages. >

[PROPOSAL] KSM support for KVM hosts

2014-04-27 Thread Laszlo Hornyak
Hi All, Currently Cloudstack does not manage the Linux Kernel SamePage Merger [1]. A KSM support would allow the operator of the cloud to gain high VM densities in the cloudstack environment by merging the redundant memory pages. 1. Add new configuration setting for KSM feature - Ignore: Instruct