Re: [Xen-devel] Xen optimization

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Tue, 20 Nov 2018, Andrii Anisov wrote:
> Hello Stefano,
> 
> On 01.11.18 22:20, Stefano Stabellini wrote:
> > 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.
> 
> Could you share your approach for interrupts latency measurement? Are you
> using any HW specifics or it is SoC independent?
> 
> I would like to get more evidences for optimizations of gic/vgic/gic-v2 code I
> did for our customer (its about old vgic, we are still on xen 4.10).

Hi Andrii,

See the following:

https://marc.info/?l=xen-devel&m=148668817704668

The numbers have improved now thanks to vwfi=native and other
optimizations but the mechanism to setup the experiment are the same.

Cheers,

Stefano

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