Awesome idea, Alex. I am thinking the similar thing also when I read the volatility feedback part of the book <Out of Control>.
2015-06-06 10:24 GMT+08:00 Alex Gaudio <[email protected]>: > Thanks James! I'd love to talk with you further if you have any > interesting or specific problems an algorithm like Relay's might solve. > > There are all sorts of possible extension problems I haven't spent time > thinking about, such as: > - scaling services rather than tasks > - more accurately predicting non-linear changes to the metric > - using Relay's algorithm as a feedback mechanism to optimize machine > learning problems. > > If you're going to Mesoscon, we could catch up then! > > Alex > > > On Fri, Jun 5, 2015 at 11:39 AM CCAAT <[email protected]> wrote: > >> 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 >> >> >> >>
