On Wed, 22 Jun 2022 14:24:05 GMT, Daniel Jeliński <djelin...@openjdk.org> wrote:
> This PR improves the performance of deduplication done by > ResourceBundleGenerator. > > The original implementation compared every pair of values, requiring O(n^2) > time. The new implementation uses a HashMap to find duplicates, trading off > some extra memory consumption for O(n) computational complexity. In practice > the time to generate jdk.localedata on my Linux VM files dropped from 14 to 8 > seconds. > > The resulting files (under build/support/gensrc/java.base and jdk.localedata) > have different contents; map iteration order depends on the insertion order, > and the insertion order of the new implementation is different from the > original. > The files generated before and after this change have the same size. This pull request has now been integrated. Changeset: c8cc94a3 Author: Daniel Jeliński <djelin...@openjdk.org> URL: https://git.openjdk.org/jdk/commit/c8cc94a38423c0cef597986fb51938a26dc20b51 Stats: 100 lines in 1 file changed: 55 ins; 27 del; 18 mod 8288979: Improve CLDRConverter run time Reviewed-by: naoto, rriggs ------------- PR: https://git.openjdk.org/jdk/pull/9243
