

CloudStack add hugepage for improving performance
I found that in Openebula have "HPC mode" on and off if it's on, it will improve VM performance and HPC mode have NUMA mode, Hugepage and so on. I really want to know about CloudStack.
Hi, I'm newbie with CloudStack.
I would like to know about CloudStack, Does it has automatic function to add hugepage into Virtual Machine. I don't want to do manually. hugepage is a technique that improving memory intensive support on KVM and RHEL.
Thank you.
I found that in Openebula have "HPC mode" on and off if it's on, it will improve VM performance and HPC mode have NUMA mode, Hugepage and so on. I really want to know about CloudStack.
Yes, it is possible but you need to understand this.
Cloudstack does not interact with a guest VM at that level. The functionality you have mentioned is completely encapsulated within the guest OS and supported by the hypervisor; Cloudstack has no control over this.
In Cloudstack you would create a VM from a template or an ISO. You can't do much with ISO installations but when using templates, you can make sure that the template itself has hugepages configured/set so all VMs launched using that template have it configured.
Alternately you could also use configuration management tools like Chef/Puppet to automate the configuration on a guest VM after it is up. This would work for both template and ISO based guest installation.
Hope this answers your query.
Thank you very much for your recommendation and cloudstack don't provide this festure. In RedHat 5, I must add Hugepage manually in both of physical machine and virtual macine so I realize that RedHat 6 has transparent huge page (TLB) and i don't configure anything, it will be use automatically.
Ask, Discuss, Answer