Jira: https://issues.apache.org/jira/browse/STRATOS-645
On Tue, Apr 29, 2014 at 11:32 PM, Nirmal Fernando <nirmal070...@gmail.com>wrote:
> And I don't understand how you eliminate threshold values!
>
>
> On Tue, Apr 29, 2014 at 10:40 PM, Nirmal Fernando
> <nirmal070...@gmail.com>wrote:
>
>> hmm... do we have a discussion on what we are planning to do?
>>
>>
>> On Tue, Apr 29, 2014 at 10:36 PM, Lahiru Sandaruwan <lahi...@wso2.com>wrote:
>>
>>> Sent from my mobile.
>>>
>>> On Apr 29, 2014 10:29 PM, "Nirmal Fernando" <nirmal070...@gmail.com>
>>> wrote:
>>> >
>>> > Asiri could build on top of my changes, I suppose?
>>>
>>> We can eliminate these factors and threshold limits completely then.
>>>
>>> >
>>> >
>>> > On Tue, Apr 29, 2014 at 10:15 PM, Lahiru Sandaruwan <lahi...@wso2.com>
>>> wrote:
>>> >>
>>> >>
>>> >>
>>> >>
>>> >> On Tue, Apr 29, 2014 at 9:52 PM, Nirmal Fernando <
>>> nirmal070...@gmail.com> wrote:
>>> >>>
>>> >>> Lahiru, this should be ok right?
>>> >>
>>> >>
>>> >> Yes. But for 4.1.0, we will be counting the required number of
>>> instances with proposed Gsoc project by Asiri.
>>> >>>
>>> >>>
>>> >>>
>>> >>> 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/
>>> >>
>>> >>
>>> >>
>>> >>
>>> >> --
>>> >> --
>>> >> 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/
>>
>
>
>
> --
> 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/
