There still needs to be a maximum. A daily rate can still be exhausted by a denial of service. Worse yet when AppEngine has issues such as datastore issues, memcache issues, task queue issues and all the other issues it has, it can cause your latency to rapidly increase even though your requests are failing. The scheduler will then start spinning up instances to serve bad requests and eat your daily quota for now good reason. In my opinion there needs to be a Max. Active Instances and also we should be able to set Minimum Idle Instances to zero. Not sure why it can only be set to 1.
On Fri, Sep 2, 2011 at 11:07 AM, Philip <[email protected]> wrote: > I would think that we can still specify an upper limit for instance > hours but some clarification would be nice. > > On Sep 2, 7:59 pm, Stephen Johnson <[email protected]> wrote: > > I mean a Maximum Active Setting (not the idle setting which is useless > > against a denial of service attack). > > > > On Fri, Sep 2, 2011 at 10:59 AM, Stephen Johnson <[email protected] > >wrote: > > > > > > > > > > > > > > > > > That's only for idle instances but if they are actively serving request > due > > > to a denial of service which is Brandon is talking about then you will > be > > > charged. There definitely needs to be a maximum setting. > > > > > On Fri, Sep 2, 2011 at 10:54 AM, prgmratlarge <[email protected] > >wrote: > > > > >> Quoting from > > >>http://code.google.com/appengine/kb/postpreviewpricing.html#scheduler. > .. > > > > >> Max Idle Instances: Decreasing this value will likely decrease your > > >> bill as fewer idle instances will typically be running and we will not > > >> charge for any excessive idle instances. In this case the scheduler > > >> knob is a suggestion to the scheduler but we will not charge you for > > >> excess if the scheduler ignores the suggestion. For instance, if you > > >> set Max Idle Instances to 5 and the scheduler leaves 16 instances up > > >> for some length of time, you will only be charged for 5 instances. > > > > >> In other words, even though there may be more than your max, you will > > >> only be charged for your max. > > > > >> On Sep 2, 1:02 pm, Seb <[email protected]> wrote: > > >> > Hi, > > > > >> > I've set "Max Idle Instances: ( 1 ) " > > >> > and "Min Pending Latency: ( 15.0s ) " > > >> > but, after waiting 15 minutes, there are still 2 instances > presents... > > > > >> > The latency of the requests are less than 1 seconds... > > > > >> > How can I get only 1 instance??? > > > > >> > Thanks, > > >> > Seb. > > > > >> -- > > >> 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. > > -- 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.
