I've got RR working under digital oceans and it works great there.

We've built a harness for generating replays. Once a replay is generated I
match the replay with the bug and comment in the bug looking for developers
to investigate. When they respond they can investigate by ssh'ing. Example:
https://bugzilla.mozilla.org/show_bug.cgi?id=1223249#c12

If we can we should prefer to have an ssh end point running rather than
ship a large VM image. It's also my understanding that while RR works
inside a VM, the trace will not work if the VM has changed host.

However right now we've decided that it's really overkill for the time
being. Producing interesting RR replays is really trivial at the moment.
Finding enough engineers to analyze them is not.

On Mon, Feb 15, 2016 at 1:21 AM, Mike Hommey <m...@glandium.org> wrote:

> On Sun, Feb 14, 2016 at 09:25:58PM -0800, Bobby Holley wrote:
> > This is so. Damn. Exciting. Thank you roc for having the vision and
> > persistence to bring this dream to reality.
> >
> > How far are we from being able to use cloud (rather than local) machine
> > time to produce a trace of an intermittently-failing bug? Some one-click
> > procedure to produce a trace from a failure on treeherder seems like it
> > would lower the activation energy significantly.
>
> One limiting factor is the CPU features required, that are not
> virtualized on AWS (they are on digital ocean, and that's about the only
> cloud provider where they are ttbomk).
>
> Relatedly, roc, is it possible to replay, on a different host, with
> possibly a different CPU, a record that would have been taken on the
> cloud? Does using a VM make it possible? If yes, having "the cloud" (or
> a set of developers) try to reproduce intermittents, and then have
> developers download the records and corresponding VM would be very
> useful. If not, we'd need a system like we have for build/test slave
> loaners.
>
> Mike
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