There is not a whole heck of a lot that I was able to find in this area. Mayhaps it’s partly because of how KVM works. That is, VMs are naught but Linux processes and thus can be tuned the same way one tunes Linux. RedHat IBM IBM Part 2 OpenStack Linux-KVM Linux-KVM
There are times (like when you’re figuring out a post like this) that you will need to fire up devstack in a VM, and in said VM ensure KVM is running. Here’s how to do that: Add ‘vmv.allow = TRUE’ to the VMX file. I do this in vagrant like so: # VMware Fusion config.vm.provider
-> Continue reading Enabling Nested KVM In Devstack on Fusion
Having jumped from the VMware world where the memory overheads and performance characteristics of ESXi and varied workloads are well known, I was surprised to learn that such was not always true in the case of KVM. In this post we talk a bit about KVM/Qemu, and how it’s memory overhead breaks down. Understanding Memory
-> Continue reading Using top to Find Memory Overhead for qemu/KVM
As I get into this performance thing with Mr Kevin. I thought I’d share a few numbers from early builds and what not. You know, the sort of “should we do this” thing kind of stuff. These nubmers are for a 5 node build using the Vagrantfiles here: Node CPU Ram Controller 1 1 1.5GB
-> Continue reading Some Numbers