Hi, As you may already know, we are looking into more memory efficient representation for Strings: https://bugs.openjdk.java.net/browse/JDK-8054307
As part of preliminary performance work for this JEP, we have to collect the empirical data on usual characteristics of Strings and char[]-s normal applications have, as well as figure out the early estimates for the improvements based on that data. What we have so far is written up here: http://cr.openjdk.java.net/~shade/density/string-density-report.pdf We would appreciate if people who are interested in this JEP can provide the additional data on their applications. It is double-interesting to have the data for the applications that process String data outside Latin1 plane. Our current data says these cases are rather rare. Please read the current report draft, and try to process your own heap dumps using the instructions in the Appendix. Thanks, -Aleksey.
