Hi Joseph, You can also completely disable the undo registration to save some memory:
editingContext.undoManager().disableUndoRegistration(); Of course, editingContext.undo() and editingContext.redo() will not work in this scenario. Cheers, Henrique On 26/04/2013, at 14:12, Chuck Hill <[email protected]> wrote: > Are you using the session's default editing context exclusively? For memory > usage optimization it is best to treat that as a read only editing context > and just use it for session spanning objects (like the current user, their > roles and permissions). Then on each page, or in each stream of activity, > create, lock, use, unlock, and dispose of a new editing context. I covered > this in at least one of my WOWODC presentations. > > You can also make an EC subclass and clear the undo stack after a successful > save: > public void saveChanges() > { > super.saveChanges(); > if (undoManager() != null) > { > undoManager().removeAllActions(); > } > } > > Though that is less useful if you are only keeping the EC alive for one save > cycle. > > Chuck > > > On 2013-04-26, at 4:55 AM, Joseph Pachod wrote: > >> Hi >> >> When looking at some memory dumps, I see huge numbers of EOF related >> instances, such as, by decreasing order and with % of instance nb and % of >> heap size : >> - _EOHandlerWeakRef 5,8% - 5,1%, >> - EOAccessArrayFaultHandler 5,7% - 6,6% >> - _EOCheapCopyMutableArray 2,9% - 1% >> - _EOMutableKnownKeyDictionnary 2,1% - 3;3% >> - _EOWeakReference 1,2% - 1% >> >> The overall JVM is about 360Mo. Each session of the application looks like >> holding quite some of them (they're nicely garbage collected on session >> termination). So they look like editing context related. >> >> I was wondering it there were some tricks to clean up these objects. >> >> For example can the WeakReference be clean up somehow ? Can the editing >> context cache be cleaned up to retain only the dirty objects ? Or maybe to >> remove some of the least used entities (or not used for quite some time) ? >> >> Any hint welcomed :) >> >> Thanks in advance >> best >> >> _______________________________________________ >> Do not post admin requests to the list. They will be ignored. >> Webobjects-dev mailing list ([email protected]) >> Help/Unsubscribe/Update your Subscription: >> https://lists.apple.com/mailman/options/webobjects-dev/chill%40global-village.net >> >> This email sent to [email protected] > > -- > Chuck Hill > Executive Managing Partner, VP Development and Technical Services > > Practical WebObjects - for developers who want to increase their overall > knowledge of WebObjects or who are trying to solve specific problems. > http://www.global-village.net/gvc/practical_webobjects > > Global Village Consulting ranks 13th in 2012 in BIV's Top 100 Fastest Growing > Companies in B.C! > Global Village Consulting ranks 76th in 24th annual PROFIT 200 ranking of > Canada’s Fastest-Growing Companies by PROFIT Magazine! > > > > > > > > > > > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Webobjects-dev mailing list ([email protected]) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/webobjects-dev/hprange%40gmail.com > > This email sent to [email protected]
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