On Thu, Apr 24, 2014 at 10:04 AM, Mariangela Hills <mariang...@wso2.com>wrote:
> I think we should provide a description on the values used in the > formulas. Like for example in the load avg formula what is "cores"? The > following are some of the descriptions: > > loadAvg=Load Average of the instance > cores = Number of CPU cores > +1 :-) > > Regards, > Mariangela > > > > > *--* > Mariangela Hills > Senior Technical Writer > > *WSO2, Inc.*lean.enterprise.middleware. > m: +94 773 500185 > w: http://wso2.com > <http://wso2.com/events/> > > > On Thu, Apr 24, 2014 at 9:30 AM, Praneesha Chandrasiri <pranee...@wso2.com > > wrote: > >> @Nirmal - Thanks for the comments. I've added the amendments. >> >> @Lahiru - I suppose you have mentioned to remove the parameters in the >> 4.1.0 release as in [1] . >> >> Aren't the parameters need to be retained in 4.0 docs? >> >> Please advise. >> >> [1] https://issues.apache.org/jira/browse/STRATOS-524 >> >> >> On Thu, Apr 24, 2014 at 5:01 AM, Lahiru Sandaruwan <lahi...@wso2.com>wrote: >> >>> Hi Nirmal, >>> >>> I have already created a Jira for removing some of the values. [1] >>> +1 for correcting values as you have mentioned. >>> >>> And Mari, please remove gradient, secondDerivative, >>> scaleDownMarginOfGradient, scaleDownMarginOfSecondDerivative from sample, >>> in each block. Use Nirmals values for sample. >>> >>> Thanks. >>> >>> [1] https://issues.apache.org/jira/browse/STRATOS-524 >>> >>> >>> On Thu, Apr 24, 2014 at 4:53 AM, Nirmal Fernando <nirmal070...@gmail.com >>> > wrote: >>> >>>> >>>> https://cwiki.apache.org/confluence/display/STRATOS/4.0.0+Sample+Auto-scaling+Policy+Definition#id-4.0.0SampleAuto-scalingPolicyDefinition-loadThresholds >>>> >>>> * memoryConsumption - is a percentage and cannot go beyond 100 since a >>>> process cannot take more than total physical memory. >>>> >>>> formula: (usedMemory / totalMemory) * 100 >>>> >>>> * loadAverage - is a percentage and it can go beyond 100% but 6000 is >>>> not a practical value. >>>> >>>> formula: (loadAvg/cores) * 100 >>>> >>>> * Further you do not want to auto-scale when the gradient is 0 (which >>>> means 'y' doesn't change with time (x)). >>>> >>>> Please see following sample: >>>> >>>> { >>>> "id": "autoscale-policy-1", >>>> "loadThresholds": { >>>> "requestsInFlight": { >>>> "average": 50, >>>> "secondDerivative": 0.2, >>>> "gradient": 10, >>>> "scaleDownMarginOfGradient": 20, >>>> "scaleDownMarginOfSecondDerivative": 0.5 >>>> }, >>>> "memoryConsumption": { >>>> "average": 70, >>>> "secondDerivative": 0.2, >>>> "gradient": 10, >>>> "scaleDownMarginOfGradient": 20, >>>> "scaleDownMarginOfSecondDerivative": 0.5 >>>> }, >>>> "loadAverage": { >>>> "average": 100, >>>> "secondDerivative": 0.2, >>>> "gradient": 20, >>>> "scaleDownMarginOfGradient": 20, >>>> "scaleDownMarginOfSecondDerivative": 0.5 >>>> } >>>> } >>>> } >>>> >>>> @Mari, would you be able to do these amendments? >>>> >>>> Thanks. >>>> >>>> -- >>>> Best Regards, >>>> Nirmal >>>> >>>> Nirmal Fernando. >>>> PPMC Member & Committer of Apache Stratos, >>>> Senior Software Engineer, WSO2 Inc. >>>> >>>> Blog: http://nirmalfdo.blogspot.com/ >>>> >>> >>> >>> >>> -- >>> -- >>> Lahiru Sandaruwan >>> Committer and PPMC member, Apache Stratos(incubating), >>> Senior Software Engineer, >>> WSO2 Inc., http://wso2.com >>> lean.enterprise.middleware >>> >>> email: lahi...@wso2.com 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 >>> >>> >> >> >> -- >> Thanks & Best Regards, >> *Praneesha Chandrasiri* >> *Technical Writer* >> *WSO2 Inc. * >> *Mobile: +(94) 718156888 <%2B%2894%29%20718156888>* >> *E-mail: pranee...@wso2.com <pranee...@wso2.com>* >> >> > -- Best Regards, Nirmal Nirmal Fernando. PPMC Member & Committer of Apache Stratos, Senior Software Engineer, WSO2 Inc. Blog: http://nirmalfdo.blogspot.com/
