I have logged this as two separate issues;

http://code.google.com/p/googleappengine/issues/detail?id=6391

http://code.google.com/p/googleappengine/issues/detail?id=6390


On Nov 21, 1:25 pm, WallyDD <[email protected]> wrote:
> I am little confused with how these instances work.
>
> How long does an instance stay alive?
> A site in Python 2.5 (M/S) fires up an instance when it is accessed
> and the instance stays alive for minutes after.
> With Python 2.7(HRD) the instance is killed off after a matter of
> seconds. So I either have to pay and keep the application alive but
> then it gets tricky.
> And to add insult to injury, if I access a python 2.7 application and
> get one page, the instance lasts for a few seconds but I am billed for
> 15 minutes. If I am billed for 15 minutes please would it be possible
> for the instance to stay alive for something close to 15 minutes?
>
> Now if I enable billing (for the cost of $2.10 a week).
> I can adjust the sliders under application settings, I have two
> settings "Idle instances" and "Pending latency".
>
> Leaving "Idle instances" at Automatic results in instances only
> lasting a few seconds. Setting it to 1 results in having a "Resident"
> instance and this sort of works. I can use the application a little
> but then a second instance fires up and leaves one instance completely
> idle. All I want is one instance running. I put "Pending Latency" up
> to 500ms to try and stop other instances firing up.
>
> I use the application and so now I have two instances serving, The
> resident instance is sitting there doing nothing and I am using
> another instance but being billed for both.
> So I go an play with the sliders and set idle instances to automatic
> and it kills one off (the resident one that was doing nothing). But
> then the instances start with their stop start routine and the
> application is very unresponsive.
>
> Is there a bug with the instancing or is there something that I really
> don't understand here.

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