Hi, Please find my answers in line.
On Thu, Dec 26, 2013 at 1:56 PM, Lahiru Sandaruwan <[email protected]> wrote: > Hi all, > > I need some information to get a better understanding of the LB stat > sending procedure. > > What is requests in flight mean exactly? > Is it the number of requests in the queue that are yet to be delivered to > the cluster at the moment? > Nope. it's the number of requests that has been delegated to the cluster, but still being processed (i.e. corresponding responses not yet being delivered to the client). > > AFAIR we get RIF per 10 seconds from LB to CEP. > How do we calculate the average, gradient, and second derivative(what is > the exact time period and logic) that we calculate these information at > CEP? > average: RiF count as an average over a 1minute (configurable) for a particular cluster. gradient: linear gradient of the RiF counts over a 1minute period. second derivative: linear change of the gradient over a 1mint period. I'll blog about these implementations in details soon. > > Thanks in advance for your answers. > > Thanks. > > > > -- > -- > Lahiru Sandaruwan > Software Engineer, > Platform Technologies, > WSO2 Inc., http://wso2.com > lean.enterprise.middleware > > email: [email protected] cell: (+94) 773 325 954 > blog: http://lahiruwrites.blogspot.com/ > twitter: http://twitter.com/lahirus > linked-in: http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146 > > -- Best Regards, Nirmal Nirmal Fernando. PPMC Member & Committer of Apache Stratos, Senior Software Engineer, WSO2 Inc. Blog: http://nirmalfdo.blogspot.com/
