Yeah, 5 shouldn't be a problem at all. It should certainly be possible to force-feed the list of plugins to DataNucleus, but it's likely this will require changes to DataNucleus core. Could you please file an issue? I'll investigate.
Thanks, Max On Wed, Jan 6, 2010 at 10:40 AM, Todd Lindner <[email protected]>wrote: > Only 5 :) > > But your first point could explain things... I probably have a few > too many 3rd party jars in my war. Will look for unnecessary ones. > > But to be even more pro-active, is there a way we can tell it what > bundles to load? So it can skip all the jar searching? Especially > since it does enhancement before hand, it should write out a manifest > of exactly which classes need to have metadata constructed. _or_ > (haha) the metadata could be pre-built as well. > > > On Jan 6, 1:02 pm, "Max Ross (Google)" > <[email protected]<maxr%[email protected]> > > > wrote: > > DataNucleus has an internal plugin mechanism that spins through all the > jars > > on the classpath looking for bundles to load. This can certainly take > some > > time. Construction of metadata is also pretty involved, but the amount > of > > time that takes should be proportional to the number of enhanced classes > you > > have. How many do you have? > > > > > > > > On Wed, Jan 6, 2010 at 4:36 AM, Todd Lindner <[email protected]> > wrote: > > > @Don - yes > > > > > @Toby - yes on the dev appserver the first request also takes about 6 > > > seconds. Watching the info log I see it finishes initialization of my > > > servlet after 1.5 seconds and then starts up the datanucleus > > > initialization, which takes about 4-5 seconds. Attaching a profiler > > > is a good idea and I will do it tonight but I'm 99% sure the hotspots > > > will be in org.datanucleus packages, which is why I was posting here > > > to hopefully find the ear of Max Ross or the like... > > > > > On Jan 5, 12:56 pm, Toby Reyelts <[email protected]> wrote: > > > > Also, can you duplicate the slowness in the dev_appserver? If so, you > can > > > > hook up a profiling tool yourself and see if there are any obvious > > > hotspots. > > > > > > On Tue, Jan 5, 2010 at 12:44 PM, Don Schwarz <[email protected]> > > > wrote: > > > > > Have you tried enabling offline precompilation? > > > > > > > On Tue, Jan 5, 2010 at 8:52 AM, Todd Lindner < > [email protected] > > > >wrote: > > > > > > >> Since Google App Engine will power down the app if there aren't > any > > > > >> requests for ~10 minutes, it has to re-initialize your application > > > > >> often. Not a problem.... I was able to trim my app init down to > > > > >> about 1.5 seconds, so its reasonable, but datanucleus itself takes > > > > >> about 5 seconds on top of that (and I only have 5 persistent > > > > >> entities!). This is a real drag on my app and I almost want to > keep > > > > >> it awake with a pinger... > > > > > > >> Any way to speed up initialization? I'm using JPA. > > > > > > >> Thanks > > > > >> -Todd > > > > > > >> -- > > > > > > >> 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 > > > > >> [email protected]. > > > > >> To unsubscribe from this group, send email to > > > > >> [email protected]<google-appengine-java%[email protected]><google-appengine-java%2B > [email protected]><google-appengine-java%2B > > > [email protected]> > > > > >> . > > > > >> 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 > > > > > [email protected]. > > > > > To unsubscribe from this group, send email to > > > > > [email protected]<google-appengine-java%[email protected]><google-appengine-java%2B > [email protected]><google-appengine-java%2B > > > [email protected]> > > > > > . > > > > > 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 > > > [email protected]. > > > To unsubscribe from this group, send email to > > > [email protected]<google-appengine-java%[email protected]><google-appengine-java%2B > [email protected]> > > > . > > > 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 > [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-appengine-java%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > > > >--
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