Re: [google-appengine] Weird scheduler behavior (again)

[Francois Masurel]

Hi Takashi,

Thanx for trying to help.

Is there a particular reason why all this information from SO isn't in the 
official GAE documentation?

Could you explain a bit more how the instance class CPU limit can be 
reached and what we can do to avoid it?

Thanx again for your help.

François

PS:

All issues have been starred long ago.


On Tuesday, January 22, 2013 8:19:46 PM UTC+1, Takashi Matsuo (Google) 
wrote:
>
>
> Hi François,
>
> The basic rule to determine a need for a new instance is described here:
>
> http://stackoverflow.com/questions/11525717/when-does-the-app-engine-scheduler-use-a-new-thread-vs-a-new-instance
>
> Other than that, there can be some rare-case scenarios where the scheduler 
> need to spawn a new instance due to some transient issues within the 
> underlying infrastructure, which are not surfaced to developers, and 
> handled automatically by the scheduler. I think it's a nature of a 
> distributed and shared system like App Engine.
>
> I assume you already have starred the following issues, but please star 
> them if you haven't.
> https://code.google.com/p/googleappengine/issues/detail?id=7865
> https://code.google.com/p/googleappengine/issues/detail?id=5858
>
>
> On Tue, Jan 22, 2013 at 3:22 AM, Francois Masurel 
> 
> > wrote:
>
>> Could someone from Google explain why a new dynamic instance was started 
>> though an existing one was still alive a served only 1 request for the last 
>> 15 minutes ?
>>
>>
>> 
>> Really looks like a waste of resources (and money).
>>
>> Thanx for your answer.
>>
>> François
>>
>>  -- 
>> You received this message because you are subscribed to the Google Groups 
>> "Google App Engine" group.
>> To view this discussion on the web visit 
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>>
>
>
>
> -- 
> Takashi Matsuo | Developers Advocate | tma...@google.com 
>  

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Re: [google-appengine] Weird scheduler behavior (again)

[Takashi Matsuo]

Hi François,

The basic rule to determine a need for a new instance is described here:
http://stackoverflow.com/questions/11525717/when-does-the-app-engine-scheduler-use-a-new-thread-vs-a-new-instance

Other than that, there can be some rare-case scenarios where the scheduler
need to spawn a new instance due to some transient issues within the
underlying infrastructure, which are not surfaced to developers, and
handled automatically by the scheduler. I think it's a nature of a
distributed and shared system like App Engine.

I assume you already have starred the following issues, but please star
them if you haven't.
https://code.google.com/p/googleappengine/issues/detail?id=7865
https://code.google.com/p/googleappengine/issues/detail?id=5858


On Tue, Jan 22, 2013 at 3:22 AM, Francois Masurel wrote:

> Could someone from Google explain why a new dynamic instance was started
> though an existing one was still alive a served only 1 request for the last
> 15 minutes ?
>
>
> 
> Really looks like a waste of resources (and money).
>
> Thanx for your answer.
>
> François
>
>  --
> You received this message because you are subscribed to the Google Groups
> "Google App Engine" group.
> To view this discussion on the web visit
> https://groups.google.com/d/msg/google-appengine/-/wZs7GyY8z1sJ.
> To post to this group, send email to google-appengine@googlegroups.com.
> To unsubscribe from this group, send email to
> google-appengine+unsubscr...@googlegroups.com.
> For more options, visit this group at
> http://groups.google.com/group/google-appengine?hl=en.
>



-- 
Takashi Matsuo | Developers Advocate | tmat...@google.com

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[google-appengine] Weird scheduler behavior (again)

[Francois Masurel]

Could someone from Google explain why a new dynamic instance was started 
though an existing one was still alive a served only 1 request for the last 
15 minutes ?


Really looks like a waste of resources (and money).

Thanx for your answer.

François

-- 
You received this message because you are subscribed to the Google Groups 
"Google App Engine" group.
To view this discussion on the web visit 
https://groups.google.com/d/msg/google-appengine/-/wZs7GyY8z1sJ.
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