Hi Robert, Indeed also without spring the start up is slow as hell. When I demo my GAE application I always feel ashamed when there is this big long pause to start it up. With all the buzz it is hard to justify that it is not my fault that the system is having this fault.
I think that this is the number one problem to be resolved. I guess it is a basic failure in the architecture of app engine. Its probably designed for python scripts and does simply not adapt to the nature of java applications. I heard that e.g. all the jars in the classpath will be loaded on the fly. I do not understand why there is not at least a way to keep the apps running. I would even pay for that. Once an app runs it runs. At least when you use memcache you can work around the long latency of the data store. I am willing to adapt my application to this new platform. But for the slow start up I am really helpless. It would be great to get some input from a GAE team member. Cheers, Toby On Mar 3, 11:35 pm, Robert Lancer <robert.lan...@gmail.com> wrote: > The problem is one I face without even usingspring, google loves to > lecture people on how the web should be fast but this doesn't apply to > their own app engine platform. Express your frustration at my fb > pagehttp://www.facebook.com/pages/Google-Please-Fix-App-Engine-For-Java/3... > feel free to post screen captures something google groups doesn't > allow > > On Mar 3, 5:23 pm, luijar <luis.j.aten...@gmail.com> wrote: > > > I think it's insane that it takes this long: > > > org.springframework.web.context.ContextLoader > > initWebApplicationContext: Root WebApplicationContext: initialization > > completed in 17914 ms > > > The only reason I haven't takenSpringout and use Struts for MVC and > > Guice for DI (or equivalent technologies) is that I am also using > >SpringAOP, which I suspect adds a lot of overhead to the mix. > > > On Mar 3, 5:18 pm, luijar <luis.j.aten...@gmail.com> wrote: > > > > Thanks Toby, > > > > Can you point me to the threads you talk about? > > > > Thanks, > > > Luijar > > > > On Mar 2, 4:15 am, Toby <toby.ro...@gmail.com> wrote: > > > > > Hi luijar, > > > > > I had the same problem -but no time-out- and I got some better > > > > performance by removing all autowire and annotation-scan stuff and > > > > also by putting lazy-init="true" on my beans. I even re-wrote a bean > > > > by a regular Servlet, without anySpringand thestartupperformance > > > > was as poor as with usingspring. So I think the initialization > > > > overhead is not that big.Depends a lot on your application, though. > > > > > What is the worst is that even once an instance is started up, it > > > > immediately seems to be suspended again. I think the cron-job is > > > > probably not the best way to do it even though it seems the only > > > > posibility for the moment. You will find a lot of threads on this > > > > topic. > > > > > Toby > > > > > On Mar 2, 3:27 am, yjun hu <itswa...@gmail.com> wrote: > > > > > > i got the same problem too, there is no better way to resolve it, i > > > > > just try > > > > > to hitting a url with cron job. > > > > > > On Tue, Mar 2, 2010 at 3:50 AM, luijar <luis.j.aten...@gmail.com> > > > > > wrote: > > > > > > Thanks for the advice, I'll try that. > > > > > > > On Mar 1, 2:31 pm, Rusty Wright <rwright.li...@gmail.com> wrote: > > > > > > > Try using the old way with xml configuration for wiring your beans > > > > > > together. The word on the street is thatSpring'scomponent scanning > > > > > > takes > > > > > > a lot of time. > > > > > > > > luijar wrote: > > > > > > > > Nope, I am still seeing it. It's quite frustrating. I even > > > > > > > > tried to > > > > > > > > reduceSpringinit time by removing schema validation from the > > > > > > > > application context init. But, that does not seem to work. I am > > > > > > > > using > > > > > > > >Springannotations and component scanning to autowire my beans, I > > > > > > > > wonder if using plain XML configuration will make autowiring > > > > > > > > faster. > > > > > > > > > On Feb 23, 9:14 pm, charming30 <charmin...@gmail.com> wrote: > > > > > > > >> Has the above mentioned "offline precompilatio" in 1.3.1 been > > > > > > > >> able to > > > > > > > >> solve your issue, I plan to useSpringon Java for my Business > > > > > > > >> App > > > > > > > >> which is complex and could be based on SOA. Kindly let me know > > > > > > > >> if your > > > > > > > >> issue was resolved or reduced by using the above fix. > > > > > > > > >> On Feb 20, 12:05 am, luijar <luis.j.aten...@gmail.com> wrote: > > > > > > > > >>> I believe my development environment was on 1.3.0. That might > > > > > > > >>> be > > > > > > > >>> something to look at, although it seems that probably it's a > > > > > > > >>> very > > > > > > > >>> small overhead, do you have any metrics that would give some > > > > > > > >>> evidence > > > > > > > >>> as to how much overhead is "offline precompilation" adding? > > > > > > > >>> Thanks > > > > > > > >>> On Feb 18, 2:04 pm, Don Schwarz <schwa...@google.com> wrote: > > > > > > > >>>> Have you deployed your application with the 1.3.1 SDK? That > > > > > > > >>>> release > > > > > > turned > > > > > > > >>>> on "offline precompilation" by default, which is an > > > > > > > >>>> optimization > > > > > > that may > > > > > > > >>>> help. > > > > > > > >>>> On Thu, Feb 18, 2010 at 7:59 AM, Alex <chasov...@gmail.com> > > > > > > > >>>> wrote: > > > > > > > >>>>> Hi, > > > > > > > >>>>> It appeared that long init problem is well known for Grails > > > > > > > >>>>> users: > > > > > > > >>>>>http://jira.codehaus.org/browse/GRAILSPLUGINS-1736 > > > > > > > >>>>> I wasted couple of weeks to create app I cannot run. Hope > > > > > > > >>>>> that > > > > > > > >>>>> SpringSource and Google can solve the issue. > > > > > > > >>>>> On Feb 17, 7:41 pm, Stephan Hartmann <hartm...@metamesh.de> > > > > > > > >>>>> wrote: > > > > > > > >>>>>> The problem is that the initialization of your app takes > > > > > > > >>>>>> longer > > > > > > than 30 > > > > > > > >>>>>> seconds. > > > > > > > >>>>>> Pinging your app doesn't help when the app is restarted > > > > > > > >>>>>> due to > > > > > > > >>>>> redeployment > > > > > > > >>>>>> or maintenance, or when high traffic demands a second > > > > > > > >>>>>> instance. > > > > > > > >>>>>> You should try to reduce yourstartuptime. > > > > > > > >>>>>> regards, > > > > > > > >>>>>> Stephan > > > > > > > >>>>>> 2010/2/17 luijar <luis.j.aten...@gmail.com> > > > > > > > >>>>>>> Great, all of our projects areSpringenabled lol. But I > > > > > > > >>>>>>> guess it's > > > > > > > >>>>>>> good that we are not the only ones seeing this, hopefully > > > > > > > >>>>>>> it gets > > > > > > a > > > > > > > >>>>>>> little more visibility. We have a cron job (1 min) that > > > > > > > >>>>>>> tries to > > > > > > keep > > > > > > > >>>>>>> our application alive by hitting a URL, but it does not > > > > > > > >>>>>>> do a very > > > > > > good > > > > > > > >>>>>>> job. It's frustrating and we don't even have access to > > > > > > > >>>>>>> the 500 > > > > > > page to > > > > > > > >>>>>>> tell the user to retry or go somewhere else. > > > > > > > >>>>>>> On Feb 17, 11:21 am, oth <other...@gmail.com> wrote: > > > > > > > >>>>>>>> Yes we have seen this problem a lot. Per our tests, an > > > > > > application > > > > > > > >>>>>>>> becomes idle after a minute of non activity. So, the > > > > > > > >>>>>>>> unfortunate > > > > > > > >>>>>>>> reality is that you need to keep your app alive by > > > > > > > >>>>>>>> simulating > > > > > > > >>>>> activity > > > > > > > >>>>>>>> on it. Or go the nonSpringroute. > > > > > > > >>>>>>>> Thanks > > > > > > > >>>>>>>> On Feb 16, 4:14 pm, luijar <luis.j.aten...@gmail.com> > > > > > > > >>>>>>>> wrote: > > > > > > > >>>>>>>>> Hello Google App Engine forum, > > > > > > > >>>>>>>>> We have been seeing ever since we deployed our > > > > > > > >>>>>>>>> applications > > > > > > > >>>>>>>>> (currently 3 of them) that when our application > > > > > > > >>>>>>>>> instances > > > > > > become > > > > > > > >>>>> idle > > > > > > > >>>>>>>>> (they have not been hit for x amount of seconds) > > > > > > > >>>>>>>>> subsequent > > > > > > > >>>>> requests > > > > > > > >>>>>>>>> return with a 500 response. Logs show a hard deadline > > > > > > > >>>>>>>>> exceeded > > > > > > > >>>>> error > > > > > > > >>>>>>>>> com.google.apphosting.runtime.HardDeadlineExceededError: > > > > > > > >>>>>>>>> This > > > > > > > >>>>> request > > > > > > > >>>>>>>>> (32306ebe63b71ab0) started at 2010/02/12 20:39:11.984 > > > > > > > >>>>>>>>> UTC and > > > > > > was > > > > > > > >>>>>>>>> still executing at 2010/02/12 20:39:41.225 UTC. > > > > > > > >>>>>>>>> at > > > > > > > com.google.appengine.runtime.Request.process-32306ebe63b71ab0(Request.java) > > > > > > > >>>>>>>>> And the first line of the log message has the following > > > > > > > >>>>>>>>> : > > > > > > > >>>>>>>>> 02-12 12:39PM 14.088 > > > > > > > >>>>>>>>> javax.servlet.ServletContext log: InitializingSpringroot > > > > > > > >>>>>>>>> WebApplicationContext > > > > > > > >>>>>>>>> Question: > > > > > > > >>>>>>>>> Has anyone else seen this behavior? How long does it > > > > > > > >>>>>>>>> take for > > > > > > an > > > > > > > >>>>>>>>> application instance to become idle? > > > > > > > >>>>>>>>> Thanks > > > > > > > >>>>>>> -- > > > > > > > >>>>>>> You received this message because you are subscribed to > > > > > > > >>>>>>> the > > > > > > Google > > > > > > > >>>>> Groups > > > > > > > >>>>>>> "Google App Engine forJava" 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%2B > > > > > > > >>>>>>> unsubscr...@googlegroups.com><google-appengine-java%2B > > > > > > unsubscr...@googlegroups.com> > > > > > > > >>>>> <google-appengine-java%2bunsubscr...@googlegroups.com<google-appengine-java > > > > > > > >>>>> %252bunsubscr...@googlegroups.com> > > > > > > <google-appengine-java%252bunsubscr...@googlegroups.com<google-appengine-ja > > > > > > va%25252bunsubscr...@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 forJava" 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%2B > > > > > > > >>>>> unsubscr...@googlegroups.com><google-appengine-java%2B > > > > > > unsubscr...@googlegroups.com> > > > > > > > >>>>> . > > > > > > > >>>>> For more options, visit this group at > > > > > > > >>>>>http://groups.google.com/group/google-appengine-java?hl=en. > > > > > > > > -- > > > > > > > 0x2B | ~0x2b -- Hamlet > > > > > > > -- > > > > > > 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%2B > > > > > > unsubscr...@googlegroups.com> > > > > > > . > > > > > > For more options, visit this group at > > > > > >http://groups.google.com/group/google-appengine-java?hl=en. > > > > > > -- > > > > > dream or truth -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. 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