On Thursday, February 20, 2014 3:49:53 PM UTC+8, Tapir wrote:
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> On Thursday, February 20, 2014 2:26:52 AM UTC+8, barryhunter wrote:
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>> On Wed, Feb 19, 2014 at 6:07 PM, Tapir <tapi...@gmail.com> wrote:
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>>>
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>>> On Thursday, February 20, 2014 1:44:35 AM UTC+8, barryhunter wrote:
>>>
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>>>>
>>>>
>>>> On Wed, Feb 19, 2014 at 5:05 AM, Tapir <tapi...@gmail.com> wrote:
>>>>
>>>>>
>>>>>
>>>>> On Wednesday, September 14, 2011 6:04:15 AM UTC+8, Rishi Arora wrote:
>>>>>>
>>>>>> It really doesn't matter it a second instance kicks in to process 
>>>>>> your user-facing requests.  If your max_idle_instances is set to 1, then 
>>>>>> you're only paying for one idle instance at any given time.  
>>>>>
>>>>>
>>>>> Really?!  Any googler can confirm this? I set max-idle-instances as 1, 
>>>>> but I am still charged more than 28 hours often recently.
>>>>>
>>>>
>>>> Can still have one idle instance. So one active instance, and one idle, 
>>>> means would use up the quota. 
>>>>
>>>> Or a spike where say three instances are started, and immidiately 
>>>> become idle. They sill still be 'charged' for 15 minutes. 
>>>>
>>>> If at the end of the 15 minutes, they are not shutdown you will still 
>>>> be 'charged' for 1 idle instance. But max_idle_instances means those two 
>>>> other ones become free. 
>>>>
>>>>  
>>>> If you want to avoid appengine keeping (and charging you for!) idle 
>>>> instances, best to set max_idle_instances, back to 'automatic'
>>>>
>>>
>>> Do you mean set it 'automatic' will charge you less?
>>>
>>
>> In general yes. But it's not absolute. 
>>
>
> Sorry, I must reject your suggestion right now and restore the value from 
> automatic to 1.
> Here is why (today's front hour usage)
> http://imgur.com/buYXfak
>

Today still doesn't ends.

I really can't understand why GAE team is not wailing to admit their java 
runtime has big problems.
 

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>>>> https://developers.google.com/appengine/docs/adminconsole/
>>>> performancesettings#minimum
>>>>
>>>
>>> This document doesn't mention 'automatic'.
>>>
>>
>> Its telling you what enabling 'idle instances' does. Going back to 
>> 'automatic' in effect turns the feature off. 
>>
>> (glossing over a few details) 
>>  
>>
>>>
>>> I feel I really can't understand many GAE documents very well.
>>>
>>
>> One of the main issue, is they leave a lot unsaid, you have to infer. 
>> Read between the lines. 
>>
>> Plus the inevitable case that things change, and the docs are not always 
>> in sync. 
>>
>>  
>>
>

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