On 06/05/2015 10:09 AM, Alex Gaudio wrote:
Hi @Ankur,
Next, we built Relay <https://github.com/sailthru/relay> and, the Mesos
extension, Relay.Mesos <https://github.com/sailthru/relay.mesos>, to
convert our small scripts into long-running instances we could then put
on Marathon.
Thanks.
From the first reference page:
" This type of problem is often quite complex, and there is a field
called Control Theory dedicated to problems "
Oh WOW! Somebody else that understands controls.....
I was going to suggest some code to build a hybrid Feedback (PID based
on resource utilizations) + Feedforward (based on chronologically
repetitive events) to solve this problem, because it's quite easy to
also integrate relay boards to boot-up/shut-down resources, if systems
are properly configured for such up/down cycling of hardware. There is
also legacy boot/shutdown controls for resources via PXE and such ether
based hardware tricks.
I think using concepts of process control applied to specific
computational resources, such as ram, cpu, etc etc, also needs to be
addressed with autoscaling. Quick glance at your projects and you
are well underway.
Hint: You might want to explain some fundamentals of "Control Theory",
as I'm not sure this collective is aware of such simple, beautiful
and robust mathematics.
PS: avoid Nyquist stability, for now, but bode plot would be keen!
hth,
James
