Scott,
What VM/bitness/platforms show this ? All or just a specific one ?
-phil.
On 1/26/17, 6:08 PM, Kevin Rushforth wrote:
Hi Scott,
Thanks for the report. The only JDK 9 specific performance problems I
have seen is with startup, which would be a good thing to discuss on
jigsaw-dev. If you are seeing actual application slowdown, that might
be something else, depending on where the problem is. Have you
profiled your application?
-- Kevin
Scott Palmer wrote:
I finally managed to get my app running on JDK 9. It is based on a
plugin architecture and the plugins are made accessible by modifying
the system class loader at runtime (because that seemed to be the
only way to make things like JAXB able to reach the classes in the
plugins). That “hack” broke with the module system so I had to find
an alternative. (Now I’m using a java agent to get an
Instrumentation interface so I can do it in a somewhat supported way
via the appendToSystemClassLoaderSearch method.)
Anyway, I’ve noticed that the application runs slower on Java 9. For
a simple test I see almost a 10% performance drop. However, I’m not
sure that it is Java FX related. I see the same throughput with the
default renderer or the recently added Marlin renderer, always a bit
slower than Java 8u121. I use the same JVM options, including
forcing the garbage collector to use the same algorithm.
Is there any expectation of a performance drop with JDK 9 at this
stage? For example should I expect some unoptimized stuff in the EA
builds?
I guess the jigsaw-dev alias the right place to bring this up?
I have a feeling it is going to be difficult to track down. :-(
I have noticed a couple layout issues fixed with JavaFX 9. Stuff that
used to “snap into place” only when I resized a dialog now seems to
be correct when the dialog first appears. Thanks for that!
Regards,
Scott
On Jan 11, 2017, at 2:14 PM, Kevin Rushforth
<kevin.rushfo...@oracle.com> wrote:
As you may know JDK 9 has hit the feature extension complete
milestone [1]. We still have a small number of weeks to fix P1-P3
bugs, but we need to know about them in order to fix them. Our focus
will be on bugs that are new in JDK 9 (regressions).
I ask all JavaFX developers to please download JDK 9 early access
[2] and test your application. You can report any bugs via
bugs.java.com [3]. If you have any questions about whether a
behavior is a bug or is expected, please ask on this alias or on the
jigsaw-dev alias [4].
Thank you.
-- Kevin
[1] http://openjdk.java.net/projects/jdk9/
[2] https://jdk9.java.net/download/
[3] http://bugreport.java.com/
[4] jigsaw-...@openjdk.java.net
