On Nov 30, 2010, at 3:29 AM, Gennady Kushnir wrote: > Hello list. > I've got "Out of memory" error once, when an app was under significant > load serving multiple users. > I am wondering if there is a way to monitor memory usage and possibly > force garbage-collection of unused objects. > For example, when debugging with MultiECLockManager I noticed that > formerly used editing contexts do not get garbage collected.
John's tip should fix that (unless you are keeping strong references in the
session or someplace):
> - reduce the page cache size from the default of 30. You rarely need this
> many backtrack pages and they consume memory
As an alternative to this:
> - eliminate or reduce the ec undo stack size.
You can call undoManager().removeAllActions() after a successful save. To
make this even easier, I use an EC subclass with this code:
/**
* Overridden to clear undo stack after a successful save.
*/
public void saveChanges()
{
super.saveChanges();
if (undoManager() != null)
{
undoManager().removeAllActions();
}
}
Chuck
--
Chuck Hill Senior Consultant / VP Development
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/products/practical_webobjects
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