Hi Isuru, Library used in carbon-metrics supports only few percentiles values (75, 98, 99).
In the siddhi extension, to calculate percentile we will be using Apache Commons Math, DescriptiveStatistics (This is also used in ML). Hence the extension itself will not have logic for percentile calculation. Thanks, Sachini On Fri, Feb 19, 2016 at 11:55 AM, Isuru Perera <[email protected]> wrote: > Did you look at Metrics Histogram implementation? Can we use that? > > On Fri, Feb 19, 2016 at 11:49 AM, Sachini Jayasekara <[email protected]> > wrote: > >> Hi all, >> >> I am working on following two alert generation scenarios, >> >> 1. Abnormal response time/ backend time - If an API response time or the >> backend time lies outside the Xth percentile. >> >> 2. Abnormal request counts - Count the number of requests during last >> minute and check if it lies outside the Xth percentile. >> >> Since percentile calculation cannot be done with DAS, it was decided that >> percentile calculation will be done using a siddhi extension. >> >> Extension will keep samples of each api (10000 records per api) and >> percentile calculation is done to that particular sample. >> Percentile calculation would happen in a daily basis. >> >> Your suggestions are welcome regarding the above approach. >> >> >> Thanks, >> Sachini >> >> >> >> >> >> >> -- >> >> >> >> *Thanks & Regards,Sachini JayasekaraSoftware Engineer; **WSO2 Inc. * >> >> *lean . enterprise . middleware | http://wso2.com <http://wso2.com> * >> >> Mobile : +94712371165 >> >> _______________________________________________ >> Architecture mailing list >> [email protected] >> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >> >> > > > -- > Isuru Perera > Associate Technical Lead | WSO2, Inc. | http://wso2.com/ > Lean . Enterprise . Middleware > > about.me/chrishantha > Contact: +IsuruPereraWSO2 <https://www.google.com/+IsuruPereraWSO2/about> > > _______________________________________________ > Architecture mailing list > [email protected] > https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture > > -- *Thanks & Regards,Sachini JayasekaraSoftware Engineer; **WSO2 Inc. * *lean . enterprise . middleware | http://wso2.com <http://wso2.com> * Mobile : +94712371165
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