Re: [libvirt-users] How to best I/O performance for Window2008 and MSSQL guest VM

2016-12-06 Thread Blair Bethwaite
Hi Roberto, On 6 December 2016 at 19:01, Roberto Fichera wrote: > I've set to copy host configuration (16 cores) and memory is set to 24GB, > host has 64GB. > Guest is Windows 2012 64bits version Is the guest configured with 16 cpus or 16 cores? >> Are you pinning to dedicated CPUs, > >no I w

Re: [libvirt-users] How to best I/O performance for Window2008 and MSSQL guest VM

2016-12-06 Thread Roberto Fichera
On 12/06/2016 06:06 AM, Blair Bethwaite wrote: > Hi Roberto, Hi Blair > What is the cpu and memory configuration of your guest? I've set to copy host configuration (16 cores) and memory is set to 24GB, host has 64GB. Guest is Windows 2012 64bits version Architecture: x86_64 CPU op-mo

Re: [libvirt-users] How to best I/O performance for Window2008 and MSSQL guest VM

2016-12-05 Thread Blair Bethwaite
Hi Roberto, What is the cpu and memory configuration of your guest? Are you pinning to dedicated CPUs, are you exposing host topology and cpu features, do you have dedicated I/O threads? Are you backing the guest memory with hugepages? All of the above will likely increase performance and minimise

[libvirt-users] How to best I/O performance for Window2008 and MSSQL guest VM

2016-12-05 Thread Roberto Fichera
Hi There, I've moved some Windows2012 with MSSQL VMs from an hold ESXi 5.5 machine to a more recent and powerful machine running Fedora 24 x86_64 and related libvirt + KVM virtualization. I've moved the VMs filesystem to LVM slices and installed the VirtIO drivers in to all Windows VMs. I've als