Hi Simon,

It is difficult to says without taking a look at your application
console, given how long it takes to load a new instance for your
application, the scheduler might "guess" that it will likely take more
than 15s to handle all incoming requests without spinning a new
instance.

Feel free to fill a production issue if you want us to investigate
closer the behavior of your application:
http://code.google.com/p/googleappengine/issues/entry?template=Production%20issue

On Mon, Sep 5, 2011 at 4:11 PM, Simon Knott <knott.si...@gmail.com> wrote:
> Hmm, the first one looks good.  I was certain that someone mentioned that
> the scheduler / min-pending latency issue had been raised as well.  I'll dig
> through the posts this evening to try and locate it.
>
> From my own experience, I'm got the following setup for a Java H/R
> application:
> Min idle instances: 1
> Max pending latency: 15s
> Multi-threading enabled
>
> However, on hitting my app I'm seeing the following scenario:
>
> 1) Zero instances
> 2) Page loaded with 3 ajax calls
> 3) 2 instances started
>
> Looking at the logs, I'm getting the following:
>
> First request: Triggers a loading request.
> Second request: Pending_ms=5250
> Third request: Pending_ms=4655.  Triggers a loading request
>
> Is there any reason the second instance is started, given that the total
> load time for the page is just over 10 seconds, well below the 15s
> threshold?
>
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-- 
Johan Euphrosine (proppy)
Developer Programs Engineer
Google Developer Relations

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