Another note about this issue is that the admin graphs listed zero 
instances during these times, even though I had the minimum idle slider set 
to 4. This means that the Google App Engine incorrectly shut down instances 
that I specified should be running.

Thanks,
Nathan Skone

On Thursday, May 17, 2012 2:51:59 PM UTC-7, Nathan Skone wrote:
>
> We have over 300 machines distributed across the US calling an API once a 
> minute, which means we should always have a base level of traffic of at 
> least 5 or 6 requests per second.  However, today we are seeing pits in our 
> requests per second graph that show the traffic dropping to zero, then 
> spiking directly afterward.  We have not deployed any new code recently, or 
> otherwise touched our application in any way.
>
> This traffic pattern has doubled our costs compared to a normal day. A 
> screenshot is attached.
>
> Thanks,
> Nathan Skone
>

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