The JMenuBar.<init> was faster on 1.3.1 than on 1.4, see the attachment.
Comments
EVALUATION
This is likely happening for the same reasons as 4493288. The slow down of loading properties (or most likely nio) seems to be effecting fonts as well.
Will reevaluate once the bugs identified in 4493288 have been addressed.
###@###.### 2001-08-21
One thing uncovered in this is that JComponent.revalidate is now calling isEventDispatchingThread when it doesn't really need to. If the parent is null, revalidate can be implemented to do nothing.
###@###.### 2001-09-17
Here is a breakdown of the bug, and timing information between
1.3.1 and 1.4 (build 82). All of this
comes from an single CPU Ultra 60 with times in milliseconds.
bug 1.3.1 1.4 % time diff
4493288 MultiUIDefaults 307 450 46.5% 150
4493295 NewJTextField 70 79 12.8% 9
4493293 NewJMenuBar 1170 1422 21.5% 252
4493294 NewJMenuItem 1681 2047 21.7% 366
4493296 NewJTree 1520 1809 19.0% 289
I was able to locate a couple of areas that seemed slower. These may
be due to bug fixs and we'll just have to live with it, but I figured
I'ld mention them:
. Initializing fonts (X11GraphicsEnvironment.registerFontPaths) is
close to 90 milliseconds slower vs 1.3.1. This will effect all but
MultiUIDefaults and NewJTextField. I determined this by adding
timing code to registerFontPaths in 1.4 and doing something
similiar in 1.3.1.
. The code in core that these tests use uses reflection, which in
these cases seems to be somewhat slower. A simple test case that
is along the lines of the code swing is using in these tests
(except MultiUIDefaults and NewJTextField) shows a slow down of
about 60 milliseconds. This is attached as FooTest.
. Loading of resource bundles is ~80 milliseconds slower. Here are
the resource bundles that are attempted to be loaded:
sun.awt.resources.awt, sun.awt.resources.awt_en,
com.sun.swing.internal.plaf.metal.resources.metal,
com.sun.swing.internal.plaf.metal.resources.metal_en,
com.sun.swing.internal.plaf.basic.resources.basic,
com.sun.swing.internal.plaf.basic.resources.basic_en.
This effects all but NewJTextField.
. Loading of the font properties (sun.awt.FontProperties) seems to be
slightly slower too, ~10ms.
. Loading of properties files in general seems slower than 1.3.1,
both for first time creation and subsequent creation. Using
com/sun/swing/internal/plaf/metal/resources/metal.properties shows a
first time creation difference of ~30ms, and subsequent slowdown of
~20 ms. This likely explains the slown down of looking up
ResourceBundles above, and perhaps the font properties file as
well. I've attached the test case, RBTest, and metal.properties.
. On the Swing side it is possible we could remove a couple of defaults
from the bindings table that aren't really needed anymore. This
shows about a ~10 millisecond improvement. This wouldn't effect the
NewJTextField test. It should be noted this is an optimization we
could have done in 1.3 as well, so this isn't something specific to
1.4. This is primarily pushing off loading of something that most
applications load anyway, so that this may not effect a real
application in anway.
As I was not able to attest any of the slow down to swing, and other bugs
are filed with the other groups, I'm closing this bug out as
'will not fix'.
###@###.### 2001-10-09