Integrated: 8293499: Provide jmod --compress option
Aleksey Shipilev
shade at openjdk.org
Mon Sep 19 06:23:47 UTC 2022
On Thu, 8 Sep 2022 07:57:36 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:
> I have been looking into `make clean-images images` performance, and realized jmod keeps compressing files with default compression level. Tuning that toward lighter compression levels improves build performance considerably, without a heavy loss in *.jmod sizes.
>
> This PR allows JMOD to select the compression level. Follow-ups would use this in the build system, see #10214.
>
> The interesting asymmetry against `jlink` is: `jlink` provides `--compress` option that only takes `2` for "ZIP compression". (Separately, we could argue if it would be beneficial to extend `--compress` to `jlink` as well, so to select the compression level there too.)
This pull request has now been integrated.
Changeset: 43f7f47a
Author: Aleksey Shipilev <shade at openjdk.org>
URL: https://git.openjdk.org/jdk/commit/43f7f47ae0f36a8147f6197804db3b74a9dda295
Stats: 154 lines in 4 files changed: 147 ins; 0 del; 7 mod
8293499: Provide jmod --compress option
Reviewed-by: alanb, mchung, jpai, redestad
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PR: https://git.openjdk.org/jdk/pull/10213
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