Re: [Xen-devel] Xen optimization

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>]

On Wed, 31 Oct 2018, Julien Grall wrote:
> On 10/31/18 8:35 PM, Milan Boberic wrote:
> > Hi,
> > 
> > > Interesting. Could you confirm the commit you were using (or the point
> > > release)?
> > > Stefano's number were based on commit "fuzz: update README.afl example"
> > > 55a04feaa1f8ab6ef7d723fbb1d39c6b96ad184a which is an unreleased version
> > > of Xen.
> > 
> > All Xens I used are from Xilinx git repository because I have
> > UltraZed-EG board which has Zynq UltraScale SoC.
> > Under branches you can find Xen 4.8, 4.9,  etc.
> > I always used latest commit: c227fe68589bdfb36b85f7b78c034a40c95b9a30
> > Here is link to it:
> > https://github.com/Xilinx/xen/tree/xilinx/stable-4.9
> 
> This branch is quite ahead of the branch Stefano's used. There are 94 commits
> more just for Arm specific code.
> 
> What I am interested is to see if we are able to reproduce Stefano's number
> with the same branch. So we can have a clue whether there are a slow down
> introduce in new code.
> 
> Stefano, you mention you will look at reproducing the numbers. Do you have any
> update on this?

No, I haven't had any time. Aside from the Xen version, another
difference is the interrupt source. I used the physical timer for
testing.

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