One day after I posted that message, behavior returned to normal and GAE became fast again. AFAICT, it's been fine since.
Jeff On Mon, Sep 30, 2013 at 2:13 AM, Nicolas Fonrose (Teevity) < nicolas.fonr...@teevity.com> wrote: > Hi Jeff, > > For the last three weeks, we are seeing quite the opposite of what you > describe here ! This is a very good surprise to us because we are usually > facing the problem you describe (many instances being started for no > apparent reasons). > > Over these three weeks, our app has literaly been flying, not sending any > user facing requests to starting instances. The number of instances started > hasn't really reduced compared to the previous month, but 98% of them are > sent to already running so our users don't experience high latency. > > We haven't got any hard facts to draw conclusion on why this has changed, > but we've got the feeling that this might be due to an external system we > have recently added (not running on AppEngine) and that sends regular > requests to our app (several requests per minutes), thus generating not > high but very regular traffic to the app. > > If this can help other AppEngine/Java users solve the well known > "high-latency on user facing requets" issue ... > > Nicolas > > > On Saturday, September 21, 2013 11:29:04 PM UTC+2, Jeff Schnitzer wrote: >> >> Yesterday and today (and possibly longer) our (Java) app is spinning up >> quite a few instances to serve simple requests. Just as one user clicking >> around our site I can get GAE to spin up 4-5 instances... and many of those >> requests are painfully slow warmup requests. >> >> It feels almost like concurrency is broken. Maybe Google is rolling out >> 1.8.5 with max_concurrent_requests but accidentally picked a default of >> 1 instead of the usual 10? >> >> One thing is that we have recently moved to maven, modules, and an ear >> package (it was a very painful process, I'm sad to say). I'm not sure how >> we could have done something to break the scheduler though. >> >> Jeff >> > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine. For more options, visit https://groups.google.com/groups/opt_out.
