[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] Taking on a Xen development project

On 2015å12æ11æ 01:23, Andrew Cooper wrote:
On 04/12/15 20:26, jtotto@xxxxxxxxxxxx wrote:

We're a team of three fourth-year undergraduate software engineering
students at the University of Waterloo in Canada.  We're in the process
of planning for our capstone design project, and are interested in
contributing to Xen.  Ideally, we'd like to take on a hypervisor/kernel
hacking project with roughly the same scope as a Google Summer of Code
project (like the hypervisor or domain support projects described at
[0]), following a similar timeline (roughly May to August 2016).  We're
all broadly interested in systems programming in C, and have each had
relevant academic and internship experiences.

Each of projects [1-3] currently on the Wiki look interesting, though
we'd be completely open to others as well.  In particular, we'd be open
to picking up Ben Catterall's work on HVM x86 deprivileged mode [4].  Do
any of these projects seem like a good fit in terms of usefulness to the
community and our timeline?  If so, we'd love to communicate more with
any maintainers with projects in mind!  We were also hoping to
familiarize ourselves with the project by addressing some Coverity
issues, if any are open at the moment.


Harley Armstrong, Chester Lin, Joshua Otto

Hello - thankyou for your interest.

One area to look at might be the parameters to the live migration
looping.  As part of the migration v2 rework I did in the 4.6 dev
period, I left all of that alone, and it is in a working but poor state.

In the past, there have been several research investigations into
improving the live migration algorithm, such as tracking the rate of
dirtying of memory, or attempting to resume the domain on the far side
and fault the final memory across.

I think you mean postcopy here? The hypervisor then needs to maintain
a dirty page bitmap and generate pagefault when a page is not yet
tranferred to the far end.
This feature already merged into QEMU2.5(kvm patch which generates
pagefault also been merged into linux kernel mainline), if you want a
reference, you can take a look at those patches.
This surely is a great aera to work on.

If you are interested in perusing this, start with reading
docs/features/migration.pandoc in the Xen tree.


Xen-devel mailing list


Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.