The billing option sounds like a great solution allow people to keep an instance up and running. I would pay $5 a month to keep servers up, but I would suggest pricing the feature as a free feature if you spend $5 a month.
As for the cron job, I was doing work every 5 minutes, but I found that was using about 10% of my free CPU time. Once I moved the cron down to a minute, I don't even use 0.1%. This seems like it is better performance for your servers, but I understand needing to turn off non active sites. -Jeff On Mon, Nov 30, 2009 at 11:38 AM, Ikai L (Google) <ika...@google.com> wrote: > Yes. This is an issue we are working on. Basically, what happens is that > instances of your application are elastic and loaded up upon demand. As your > application grows, we will grow with you, but one of the consequences of > this is that if your application is not receiving many requests, we may > cycle you out to allocate more instances for an application with higher > resource requirements. > > We discourage running cron jobs to reduce startup time because ultimately, > this will result in more aggressive cycling for all of our users. We're > looking at several techniques to speed up Java application startup time. > It's also been suggested that we should look at a billing enabled option for > keeping a certain number of instances warm at all times. > > On Sun, Nov 29, 2009 at 11:22 PM, Jeffrey Goetsch <jeffg....@gmail.com>wrote: > >> I have noticed that the first request to a server instance has really high >> CPU usage (7000+ milliseconds). After the server is up, the same request >> takes only 20 milliseconds. I am not using Spring or any other framework. >> It appears that the time is used during the first execute call on a >> Datastore query. >> >> Is this a normal behavior? >> >> I have a cron job that I was running every 2 minutes, but that alone was >> using 15% of my free quota. I have moved the cron to every minute, and I'm >> seeing huge improvement on performance and quota. The cron used to take >> 7000+ ms and now I am getting 20ms. Does this mean you should make sure >> you have at least on cron running every minute? >> >> Thanks, >> Jeffrey >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Google App Engine for Java" group. >> To post to this group, send email to >> google-appengine-j...@googlegroups.com. >> To unsubscribe from this group, send email to >> google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2bunsubscr...@googlegroups.com> >> . >> For more options, visit this group at >> http://groups.google.com/group/google-appengine-java?hl=en. >> > > > > -- > Ikai Lan > Developer Programs Engineer, Google App Engine > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to > google-appengine-j...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
