Lahiru, this should be ok right?
On Tue, Apr 29, 2014 at 7:21 PM, Nirmal Fernando <nirmal070...@gmail.com>wrote:
> 4.1.0
>
>
> On Tue, Apr 29, 2014 at 12:18 PM, Lahiru Sandaruwan <lahi...@wso2.com>wrote:
>
>> Hi Nirmal,
>>
>> Which release do you plan to add this feature?
>>
>> Thanks.
>>
>>
>> On Tue, Apr 29, 2014 at 6:08 AM, Nirmal Fernando
>> <nirmal070...@gmail.com>wrote:
>>
>>> Hi All,
>>>
>>> Current auto-scaler takes only the 'average' threshold value from a
>>> user's auto-scaling policy. Then inside the scaling related drools rules it
>>> calculates an upper bound and a lower bound by multiplying the average
>>> threshold value by two non-configurable constants.
>>>
>>> scaleUp : Boolean() from ((rifReset && (rifPredictedValue >
>>> rifAverageLimit * *0.8*)) || (mcReset && (mcPredictedValue >
>>> mcAverageLimit * 0.8)) || (laReset && (laPredictedValue > laAverageLimit *
>>> 0.8)))
>>> scaleDown : Boolean() from ((rifReset && (rifPredictedValue <
>>> rifAverageLimit ** 0.1*)) && (mcReset && (mcPredictedValue <
>>> mcAverageLimit * 0.1)) && (laReset && (laPredictedValue < laAverageLimit *
>>> 0.1)))
>>>
>>> IMO this is a limitation and we could make these constants configurable
>>> via auto-scaling policy.
>>>
>>> So, I propose following format to the auto-scaling policy:
>>>
>>> {
>>> "id": "autoscale-policy-1",
>>> "loadThresholds": {
>>> "requestsInFlight": {
>>> "upperLimit": 30,
>>> "lowerLimit": 5
>>> },
>>> "memoryConsumption": {
>>> "upperLimit": 80,
>>> "lowerLimit": 50
>>> },
>>> "loadAverage": {
>>> "upperLimit": 100,
>>> "lowerLimit": 20
>>> }
>>> }
>>> }
>>>
>>> Then, we can modify the rule to consider user-defined threshold values
>>> when taking the scaling decision.
>>>
>>> Let me know your thoughts.
>>>
>>> --
>>> 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
>>
>>
>
>
> --
> Best Regards,
> Nirmal
>
> Nirmal Fernando.
> PPMC Member & Committer of Apache Stratos,
> Senior Software Engineer, WSO2 Inc.
>
> Blog: http://nirmalfdo.blogspot.com/
>
--
Best Regards,
Nirmal
Nirmal Fernando.
PPMC Member & Committer of Apache Stratos,
Senior Software Engineer, WSO2 Inc.
Blog: http://nirmalfdo.blogspot.com/
