On Wed, 24 Jan 2024 15:42:05 GMT, Oli Gillespie <ogilles...@openjdk.org> wrote:
> A typical call to `new SecureRandom()` is slowed down by looking for a > constructor in NativePRNG which takes `java.security.SecureRandomParameters`. > NativePRNG does not have such a constructor, so the search fails > [here](https://github.com/openjdk/jdk/blob/master/src/java.base/share/classes/java/security/Provider.java#L1951-L1957), > incurring all the cost of the lookup and creating a subsequent exception. > > Creating a dummy constructor which takes and ignores this parameter will > speed up `new SecureRandom()` calls significantly. > > The benchmark from https://github.com/openjdk/jdk/pull/17559 shows around 80% > reduction in time taken to create a new SecureRandom with NativePRNG (default > on my machine). > > > Before > SecureRandomBench.newSecureRandom avgt 2930 ± 50 ns/op > > After > SecureRandomBench.newSecureRandom avgt 510 ± 16 ns/op This pull request has now been integrated. Changeset: 69b2674c Author: Oli Gillespie <ogilles...@openjdk.org> Committer: Weijun Wang <wei...@openjdk.org> URL: https://git.openjdk.org/jdk/commit/69b2674c6861fdb7d9f9cb39e07d50515c73e33a Stats: 16 lines in 1 file changed: 9 ins; 3 del; 4 mod 8324648: Avoid NoSuchMethodError when instantiating NativePRNG Reviewed-by: shade, weijun, liach, valeriep ------------- PR: https://git.openjdk.org/jdk/pull/17560
