$ export CLASSPATH=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/lib/tools.jar $ time gij -verbose:class com.sun.tools.javac.Main HelloWorld.java &> class.interp.log real 0m9.633s user 0m8.675s sys 0m0.094s $ time gij -verbose:class -Dgnu.gcj.precompiled.db.path=/usr/lib/eclipse/eclipse.db \ com.sun.tools.javac.Main HelloWorld.java &> class.precomp.log real 0m8.972s user 0m8.761s sys 0m0.113s $ diff class.interp.log class.precomp.log > class.log.diff $ sudo mv /usr/lib/eclipse/plugins/org.eclipse.jdt.core_3.1.0/jdtcore.jar.so \ /usr/lib/eclipse/plugins/org.eclipse.jdt.core_3.1.0/jdtcore.jar.so.not $ time gij -verbose:class com.sun.tools.javac.Main HelloWorld.java &> class.interp2.log real 0m2.543s user 0m2.430s sys 0m0.111s $ time gij -verbose:class -Dgnu.gcj.precompiled.db.path=/usr/lib/eclipse/eclipse.db \ com.sun.tools.javac.Main HelloWorld.java &> class.precomp2.log real 0m2.116s user 0m2.014s sys 0m0.097s