Re: [libvirt] How can I improve the performance of libvirt when running many virtual machines on same host

2011-01-20 Thread Diego Dias
Thanks for the answer. I will try to allocate more memory to Dom0 (it is running wih 2GB on a physical host with 64GB) and see if libvirtd/xend are swapping. I said the magic number 35 because I was running 54 guests on that host and xend was really slow (around 5 minutes to execute a /xm

[libvirt] How can I improve the performance of libvirt when running many virtual machines on same host

2011-01-19 Thread Diego Dias
Hi, I am using Xen 4 as hypervisor and using libvirt 0.8.4 to communicate with it. When I run more than 35 virtual machines on the host, Libvirt starts to run extremely slow and I cant even execute a /virsh list/. The memory usage of libvirtd is around 468288K. Is there any way to

Re: [libvirt] How can I improve the performance of libvirt when running many virtual machines on same host

2011-01-19 Thread Daniel Veillard
On Wed, Jan 19, 2011 at 04:45:04PM -0200, Diego Dias wrote: Hi, I am using Xen 4 as hypervisor and using libvirt 0.8.4 to communicate with it. When I run more than 35 virtual machines on the host, Libvirt starts to run extremely slow and I cant even execute a /virsh list/. The memory