@Per, thanks for the data, that is very helpful! There are a couple of things going on here. The first is that it is spinning up several new dynamic instances at a time. That's definitely a bug, and I've confirmed why its happening. We'll fix that for the next release.
For your warmup requests, I think you should try to do as much initialization as you can within the 30s time limit. Warmup requests are a special kind of loading request, in that they are not end-user facing: http://code.google.com/appengine/docs/python/config/appconfig.html#Inbound_Services By having your warmup requests do more work, you should avoid the warm-but-not-hot instances, which appear to be the cause of the higher end-user latencies in your case. I should point out, in case this is not obvious, when an instance is being warmed-up, we are not sending it any other traffic. We will wait until /_ah/warmup completes before we send any user requests to it. @Tim, Min-Idle-Instances is not yet tunable (other than 0 or 3 with Always-On), but will be soon. We're working on it. @All, thanks for filing the production issues, and providing the helpful data and feedback. We are continuing to debate the matter internally and are continuing to look for the best solution here. On Mon, Aug 1, 2011 at 1:26 AM, Tim Hoffman <[email protected]> wrote: > I have created a new issue specifically asking for metrics/statistics on > rate of instance startup shutdown, > > http://code.google.com/p/googleappengine/issues/detail?id=5458 > > If you interested star or even add some more stats/numbers your would like > to see. > > I think this is going to be important as we move into the new charging > scheme. > > Rgds > > Tim > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/google-appengine/-/1WiVSAKF5loJ. > 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.
