On Wed, Dec 16, 2009 at 1:30 PM, Alex Black <a...@alexblack.ca> wrote:

> cool, thanks for the info. We're not using those features yet, so
> we'll leave this off for now.
>

If you're not "using those features" what part of Lift are you using?

Can you send the raw HTML (via view source in your browser) of a page?  I'm
betting that you're using some GUID <-> function stuff... it's pretty hard
not to in Lift.


>
> On Dec 16, 4:03 pm, David Pollak <feeder.of.the.be...@gmail.com>
> wrote:
> > On Wed, Dec 16, 2009 at 5:56 AM, Alex Black <a...@alexblack.ca> wrote:
> > > > Are you using any Comet or Ajax or any Lift generated form elements?
>  If
> > > you
> > > > are using any of these (anything where Lift is storing a function on
> the
> > > > server-side and presenting the function as a GUID on the client
> side),
> > > then
> > > > it is strongly advised that you enable GC.
> >
> > To disable Garbage Collection:
> >
> > LiftRules.enableLiftGC = false
> >
> > Each GUID that's shipped to the client for form callbacks, Comet
> callbacks,
> > Ajax callbacks, JSON callbacks, etc. is associated with a function.  That
> > function is stored in a session-specific table that maps from GUIDs to
> > functions.  Without garbage collection, the functions associated with the
> > GUIDs build up for the duration of a given session.  The can be memory
> > intensive.  So, we've implemented a mechanism where every 75 seconds (a
> > tunable parameter), the browser does an Ajax call to the server saying
> "page
> > XXXX" is still live.  All GUIDs associated with that page are "kept
> > around."  If a GUID hasn't been seen on a page in 10 minutes and is not
> > associated with a Comet component that's still live, then the function is
> > removed from the GUID mapping table and will ultimately be removed from
> > memory by the JVM garbage collector.
> >
> >
> >
> > > We're not using Comet or Lift generated form elements.  We are using a
> > > jQuery plugin to do autocomplete which uses ajax. Can you tell me a
> > > bit more about GC, is it a jQuery thing?
> >
> > > I've turned off auto ajax also:
> >
> > >  // For now, disable all Lift ajax stuff
> > >    LiftRules.autoIncludeAjax = session => false
> >
> > > So, I get this error on every page:
> >
> > > Error: lift_successRegisterGC is not defined
> >
> > > and this error on pages that don't use jQuery:
> >
> > > Error: jQuery is not defined
> >
> > > > > Thanks!
> >
> > > > > - Alex
> >
> > > > > --
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