RFR 8080640: Reduce copying when reading JAR/ZIP entries
staffan.friberg at oracle.com
Tue May 19 01:44:31 UTC 2015
Wanted to get reviews and feedback on this performance improvement for
reading from JAR/ZIP files during classloading by reducing unnecessary
copying and reading the entry in one go instead of in small portions.
This shows a significant improvement when reading a single entry and for
a large application with 10k classes and 500+ JAR files it improved the
startup time by 4%.
For more details on the background and performance results please see
the RFE entry.
RFE - https://bugs.openjdk.java.net/browse/JDK-8080640
WEBREV - http://cr.openjdk.java.net/~sfriberg/JDK-8080640/webrev.0
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