Performance of Inflater/Deflater does not change the class loading
performance from
jar files bundled with JDK/JRE, they have been "uncompressed" after
installation...
Sherman
Ulf Zibis wrote:
Am 04.05.2009 23:38, Martin Buchholz schrieb:
I think many people will be interested in performance improvements
in Inflater/Deflater. I may have time to help review.
Yes, there is also interest from charset de/encoding side. See:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6818736
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6818737
Current charset mapping tables are hosted as huge String constants
inside charset classes. Hosting them as resource data files would
would avoid ~50 % disk-footprint wastage of the charsets.jar.
Additionally sharing of overlapping charset mapping data would become
manageable. Currently we only have ClassLoader#getResouceAsStream() to
load such data files, but we can't use it, because the underlying
buffered stream is too slow in respect of JVM startup time. We need
fast nio direct buffer access via java.nio.channels.Channel to load
the data from charsets.jar.
So improving performance of jar/zip file access would be much
appreciated. :-)
-Ulf
