JEDIT_JAVA_OPTIONS: actors.enableForkJoin=false is supposed to enable ResizableThreadPoolScheduler, to avoid starvation of excessive amounts of future tasks etc.;
--- a/src/Tools/jEdit/dist-template/etc/settings Sun Aug 29 20:07:59 2010 +0200
+++ b/src/Tools/jEdit/dist-template/etc/settings Sun Aug 29 20:09:46 2010 +0200
@@ -4,8 +4,8 @@
JEDIT_SETTINGS="$ISABELLE_HOME_USER/jedit"
JEDIT_OPTIONS="-reuseview -noserver -nobackground"
-JEDIT_JAVA_OPTIONS="-Xms128m -Xmx512m -Xss2m -Dactors.corePoolSize=4"
-#JEDIT_JAVA_OPTIONS="-server -Xms128m -Xmx1024m -Xss4m -Dactors.corePoolSize=8"
+JEDIT_JAVA_OPTIONS="-Xms128m -Xmx512m -Xss2m -Dactors.corePoolSize=4 -Dactors.enableForkJoin=false"
+#JEDIT_JAVA_OPTIONS="-server -Xms128m -Xmx1024m -Xss4m -Dactors.corePoolSize=8 -Dactors.enableForkJoin=false"
JEDIT_SYSTEM_OPTIONS="-Dapple.laf.useScreenMenuBar=true -Dcom.apple.mrj.application.apple.menu.about.name=Isabelle/jEdit"
JEDIT_STYLE_SHEETS="$ISABELLE_HOME/lib/html/isabelle.css:$JEDIT_HOME/etc/isabelle-jedit.css:$ISABELLE_HOME_USER/etc/isabelle.css:$ISABELLE_HOME_USER/etc/isabelle-jedit.css"