Re: [Qemu-devel] [RFC 0/7] Live Migration with Pass-through Devices proposal

2015-05-19 Thread Michael S. Tsirkin
On Wed, Apr 22, 2015 at 10:23:04AM +0100, Daniel P. Berrange wrote: > On Fri, Apr 17, 2015 at 04:53:02PM +0800, Chen Fan wrote: > > backgrond: > > Live migration is one of the most important features of virtualization > > technology. > > With regard to recent virtualization techniques, performance

Re: [Qemu-devel] [RFC 0/7] Live Migration with Pass-through Devices proposal

2015-04-22 Thread Dr. David Alan Gilbert
* Daniel P. Berrange (berra...@redhat.com) wrote: > On Wed, Apr 22, 2015 at 06:12:25PM +0100, Dr. David Alan Gilbert wrote: > > * Daniel P. Berrange (berra...@redhat.com) wrote: > > > On Wed, Apr 22, 2015 at 06:01:56PM +0100, Dr. David Alan Gilbert wrote: > > > > * Daniel P. Berrange (berra...@redh

Re: [Qemu-devel] [RFC 0/7] Live Migration with Pass-through Devices proposal

2015-04-22 Thread Daniel P. Berrange
On Wed, Apr 22, 2015 at 06:12:25PM +0100, Dr. David Alan Gilbert wrote: > * Daniel P. Berrange (berra...@redhat.com) wrote: > > On Wed, Apr 22, 2015 at 06:01:56PM +0100, Dr. David Alan Gilbert wrote: > > > * Daniel P. Berrange (berra...@redhat.com) wrote: > > > > On Fri, Apr 17, 2015 at 04:53:02PM

Re: [Qemu-devel] [RFC 0/7] Live Migration with Pass-through Devices proposal

2015-04-22 Thread Dr. David Alan Gilbert
* Daniel P. Berrange (berra...@redhat.com) wrote: > On Wed, Apr 22, 2015 at 06:01:56PM +0100, Dr. David Alan Gilbert wrote: > > * Daniel P. Berrange (berra...@redhat.com) wrote: > > > On Fri, Apr 17, 2015 at 04:53:02PM +0800, Chen Fan wrote: > > > > backgrond: > > > > Live migration is one of the m

Re: [Qemu-devel] [RFC 0/7] Live Migration with Pass-through Devices proposal

2015-04-22 Thread Daniel P. Berrange
On Wed, Apr 22, 2015 at 06:01:56PM +0100, Dr. David Alan Gilbert wrote: > * Daniel P. Berrange (berra...@redhat.com) wrote: > > On Fri, Apr 17, 2015 at 04:53:02PM +0800, Chen Fan wrote: > > > backgrond: > > > Live migration is one of the most important features of virtualization > > > technology.

Re: [Qemu-devel] [RFC 0/7] Live Migration with Pass-through Devices proposal

2015-04-22 Thread Dr. David Alan Gilbert
* Daniel P. Berrange (berra...@redhat.com) wrote: > On Fri, Apr 17, 2015 at 04:53:02PM +0800, Chen Fan wrote: > > backgrond: > > Live migration is one of the most important features of virtualization > > technology. > > With regard to recent virtualization techniques, performance of network I/O >

Re: [Qemu-devel] [RFC 0/7] Live Migration with Pass-through Devices proposal

2015-04-22 Thread Daniel P. Berrange
On Wed, Apr 22, 2015 at 10:23:04AM +0100, Daniel P. Berrange wrote: > On Fri, Apr 17, 2015 at 04:53:02PM +0800, Chen Fan wrote: > > backgrond: > > Live migration is one of the most important features of virtualization > > technology. > > With regard to recent virtualization techniques, performance

Re: [Qemu-devel] [RFC 0/7] Live Migration with Pass-through Devices proposal

2015-04-22 Thread Daniel P. Berrange
On Fri, Apr 17, 2015 at 04:53:02PM +0800, Chen Fan wrote: > backgrond: > Live migration is one of the most important features of virtualization > technology. > With regard to recent virtualization techniques, performance of network I/O > is critical. > Current network I/O virtualization (e.g. Par

[Qemu-devel] [RFC 0/7] Live Migration with Pass-through Devices proposal

2015-04-17 Thread Chen Fan
backgrond: Live migration is one of the most important features of virtualization technology. With regard to recent virtualization techniques, performance of network I/O is critical. Current network I/O virtualization (e.g. Para-virtualized I/O, VMDq) has a significant performance gap with nativ