VM performance issue in KVM guests.

2010-04-10 Thread Zhang, Xiantao
Hi, all We are working on the scalability work for KVM guests, and found one big issue exists in linux scheduler and it may impact guest's performance and scalability a lot for some special workloads running in VM. In the current Linux scheduler, there are some features to enhance App's

Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support.

2010-04-10 Thread Jamie Lokier
Mohammed Gamal wrote: Hi Javier, Thanks for the link. However, I'm still concerned with interoperability with other operating systems, including non-Windows ones. I am not sure of how many operating systems actually support 9p, but I'm almost certain that CIFS would be more widely-supported.

Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support.

2010-04-10 Thread Mohammed Gamal
On Sat, Apr 10, 2010 at 2:12 PM, Jamie Lokier ja...@shareable.org wrote: Mohammed Gamal wrote: Hi Javier, Thanks for the link. However, I'm still concerned with interoperability with other operating systems, including non-Windows ones. I am not sure of how many operating systems actually

Re: VM performance issue in KVM guests.

2010-04-10 Thread Avi Kivity
(copying lkml and some scheduler folk) On 04/10/2010 11:16 AM, Zhang, Xiantao wrote: Hi, all We are working on the scalability work for KVM guests, and found one big issue exists in linux scheduler and it may impact guest's performance and scalability a lot for some special workloads

Re: Setting nx bit in virtual CPU

2010-04-10 Thread Avi Kivity
On 04/09/2010 02:55 AM, Richard Simpson wrote: On 08/04/10 08:23, Avi Kivity wrote: Strange. Can you hack qemu-kvm's cpuid code where it issues the ioctl KVM_SET_CPUID2 to show what the data is? I'm not where that code is in your version of qemu-kvm. So, basically I go round a

-vga std 1920x1080 support

2010-04-10 Thread Øyvind Sæther
Recient qemu-kvm supports many high resolutions, which is great. However, 1920x1200 support is there while 1920x1080 is not. Could developers please add support for 1920x1080 resolution to the vga std driver? thanks. signature.asc Description: This is a digitally signed message part.

Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support.

2010-04-10 Thread Javier Guerra Giraldez
On Sat, Apr 10, 2010 at 7:42 AM, Mohammed Gamal m.gamal...@gmail.com wrote: On Sat, Apr 10, 2010 at 2:12 PM, Jamie Lokier ja...@shareable.org wrote: To throw a spanner in, the most widely supported filesystem across operating systems is probably NFS, version 2 :-) Remember that Windows usage