[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] Ideas wiki for GSoC 2010
From: |
Muli Ben-Yehuda |
Subject: |
Re: [Qemu-devel] Ideas wiki for GSoC 2010 |
Date: |
Mon, 15 Mar 2010 07:18:12 -0700 |
User-agent: |
Mutt/1.5.20 (2009-06-14) |
On Mon, Mar 15, 2010 at 02:03:11PM +0100, Joerg Roedel wrote:
> On Mon, Mar 15, 2010 at 05:53:13AM -0700, Muli Ben-Yehuda wrote:
> > On Mon, Mar 15, 2010 at 02:25:41PM +0200, Avi Kivity wrote:
> > > On 03/10/2010 11:30 PM, Luiz Capitulino wrote:
> >
> > > > Hi there,
> > > >
> > > > Our wiki page for the Summer of Code 2010 is doing quite well:
> > > >
> > > >http://wiki.qemu.org/Google_Summer_of_Code_2010
> > >
> > > I will add another project - iommu emulation. Could be very
> > > useful for doing device assignment to nested guests, which could
> > > make testing a lot easier.
> >
> > Our experiments show that nested device assignment is pretty much
> > required for I/O performance in nested scenarios.
>
> Really? I did a small test with virtio-blk in a nested guest (disk
> read with dd, so not a real benchmark) and got a reasonable
> read-performance of around 25MB/s from the disk in the l2-guest.
Netperf running in L1 with direct access: ~950 Mbps throughput with
25% CPU utilization. Netperf running in L2 with virtio between L2 and
L1 and direct assignment between L1 and L0: roughly the same
throughput, but over 90% CPU utilization! Now extrapolate to 10GbE.
Cheers,
Muli
- Re: [Qemu-devel] Ideas wiki for GSoC 2010, (continued)
- Re: [Qemu-devel] Ideas wiki for GSoC 2010, Muli Ben-Yehuda, 2010/03/15
- Re: [Qemu-devel] Ideas wiki for GSoC 2010, Joerg Roedel, 2010/03/15
- Re: [Qemu-devel] Ideas wiki for GSoC 2010, Avi Kivity, 2010/03/15
- Re: [Qemu-devel] Ideas wiki for GSoC 2010, Anthony Liguori, 2010/03/15
- Re: [Qemu-devel] Ideas wiki for GSoC 2010, Avi Kivity, 2010/03/15
- Re: [Qemu-devel] Ideas wiki for GSoC 2010, Anthony Liguori, 2010/03/15
- Re: [Qemu-devel] Ideas wiki for GSoC 2010, Avi Kivity, 2010/03/16
- Re: [Qemu-devel] Ideas wiki for GSoC 2010, Joerg Roedel, 2010/03/15
- Re: [Qemu-devel] Ideas wiki for GSoC 2010, Anthony Liguori, 2010/03/15
- Re: [Qemu-devel] Ideas wiki for GSoC 2010,
Muli Ben-Yehuda <=