Hi Bhathiya, It's good to see your proposal on improving current Autoscaling functionality. This would definitely add value to Stratos. We could plan and deliver this functionality in a future version.
It would be great if you could prepare a implementation design for your project proposal and discuss it in detail. Thanks On Mon, May 25, 2015 at 10:35 PM, Supun Bhathiya <bhathiya...@cse.mrt.ac.lk> wrote: > Hi Imesh,Lakmal, Lahiru, Devs, > > This is intended to formalize the discussion we had on $subject, on > behalf of our final year project, " *Workload and Resource Aware, > Proactive Auto-scaling for PaaS Sytems* ". > > Our project is aimed at adding the following features and improvements to > Apache Stratos. > > 1 - Improved Workload Prediction > > Currently Stratos autoscaler predict *immediate future load* based on > current (in memory) health statistic. > > We propose to improve the auto-scaling mechanism to *predict workload > for larger period of time by persisting and analyzing past statistics.* > > 2 - Smart resource allocation and deallocation > > Currently Stratos is not fully aware of all the resources provided by > various IaaS and its pricing models. Therefore when scaling up, Stratos > always spin-up an instance of same type. On the other hand kill a randomly > selected instance when scaling down. > > We propose to improve this mechanism by selecting resources based on > application workload patterns, available resource types and pricing of > resources. For example allocating memory optimized instance would be cost > effective for some application while some other application require high > CPU but less memory. Also scale down mechanism can be improved by > introducing features like "smart killing". > > 3 - Visualizing > > We propose to implement graph base view of > > - Predicted vs actual workloads > - Optimized vs normal resource usage > - Cost prediction > > We are glad to share our preliminary design concerns with the community > and value your feedback and suggestions on our attempt. > > Thanks > -Bhathiya > -- Imesh Gunaratne Senior Technical Lead, WSO2 Committer & PMC Member, Apache Stratos
