Hi Per, I'm going to make a wild guess here and assume you are using the High Replication Datastore. Apps which have selected this are presently running on a set of machines that have the properties you describe. Rather than having idle instance processes evicted after some number of minutes, they hang around for hours. This is because of the present ratio of cpu to memory pressure on those machines; essentially, it's a by-product of the present supply and demand for that subset of apps and machines.
It will certainly change but probably not for several months yet. Eventually it will have the same behavioral patterns as you see for M/S-D apps. If you'd like to keep one instance up always though, when the billing rollout is complete you'll be able to set min-idle-instances=1. On Wed, Sep 7, 2011 at 4:56 AM, Per <[email protected]> wrote: > Hi, > > I just disabled the "always on" option for my QA application, wanting > to experiment with the new pricing model. Instead, I set the max-idle > to 1, and I defined a 300ms latency in the application settings. The > QA box is rarely used, but since the Cron-Jobs keep running every 5 > minutes to clean up stuff, there was always some base load. > > I checked out the stats, and it turns out there was always one > instance up in the past 24 hours, and the currently active instance is > 11h old. That's perfect for me: the less instance restarts we have, > the faster the app will react (since startup takes some 5 to 10 > seconds). Overall, this QA box cost me a mere 1ct under the new > pricing. Great news! > > Is this too good to be true? When App Engine started out, new > instances got killed after 60seconds, and it was officially prohibited > to ping instances to keep it alive. Will that happen again? Or is it > fine to consume the free 1 instance permanently? > > Cheers, > Per > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
