openstack

Provisioning a VM with SR-IOV interfaces

As most of our VNFs need multiple interfaces from limited physical ports and also require near line-rate performance, SR-IOV fits our needs so well. SR-IOV? Single Root I/O Virtualization(SR-IOV) is a technology, by Intel created to improve the networking performance of virtual machines, and which is a specification that allows a PCIe device to appear to be multiple seperate physical PCe devices..

Complete Isolation of VM resources

When we allocate CPUs to a guest for using them only for an application on it, we need to keep in mind that many other processes from host to guest can steal that CPUs and sometimes VM should compete for it. Not to let the host or other VMs interrupt, some configuration must be set for the resources to be dedicated completely. In our evironment, hyper-threading is enabled unless it’s a special c..