RFR: 8342040: Further improve entry lookup performance for multi-release JARs [v3]

Fri Oct 18 13:59:33 UTC 2024

On Fri, 18 Oct 2024 10:04:55 GMT, Claes Redestad <redestad at openjdk.org> wrote:

> One is to store the `checkedHash` rather than the full `String`. This gets `openCloseZipFile` down to ~910000 ns/op. (`checkedHash` very hot in profiles). There's still a chance for redundant lookups on hash collisions, but this should be rare.

Seems like a resonable trade-off.  Could you take a look at the latest 771488e and see if that represents your suggestion here?

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PR Review Comment: https://git.openjdk.org/jdk/pull/21489#discussion_r1806388657