On Tue, Feb 7, 2012 at 01:06, Brandon Wirtz <[email protected]> wrote: >> What I've found is that unless you've got very spiky traffic, that > suddenly and >> massively spikes, you can turn the max idle instances down. They more-or- >> less just act like a buffer, but don't actively serve traffic. If you > want better >> performance turn the min-idle instances up a little, but again this > doesn't >> need to be too high. I generally run apps with between "automatic" and 15 >> idle instances. > > I find that you should very, very rarely need anywhere near that. > > I did a post a while back with some rough formulas, but if your Max idle > time is 30 seconds minus (6x your average request time + warmup time), you > can generally weather any spike.
Did you factor into account app startup times? Some apps can easily take several seconds to get fired up, so they do better with a larger buffer. For light apps I agree, I've found 1 or 2 is sufficient. > > Typically if you set max pending to 1s your users will be a lot happier, and > you don't have to do as much with tuning. I used to spend more time tuning > max idle instances, now, I set that to 1 or 2 (depending on my instance > size) and tune the max idle time. (lower means better scale) I agree here too, I generally set my max idle to 5 then don't mess with it. I prefer 500ms for my default max latency, but a lot of my stuff is tuned to spin up fast. > > > > > > -- > 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.
