> In this PR I propose to refresh the included headers in hotspot > `precompiled.hpp`. The current set of precompiled headers was refreshed in > 2018, 7 years ago. I repeated the same operations and measurements after > refreshing the set of precompiled headers according to the current usage > frequency. > > These are the results I observed. Depending on the platform, the improvement > is between 10 and 20% in terms of total work (user+sys). The results are in > seconds. > > > linux-x64 GCC > master real 81.39 user 3352.15 sys 287.49 > JDK-8365053 real 81.94 user 3030.24 sys 295.82 > > linux-x64 Clang > master real 43.44 user 2082.93 sys 130.70 > JDK-8365053 real 38.44 user 1723.80 sys 117.68 > > linux-aarch64 GCC > master real 1188.08 user 2015.22 sys 175.53 > JDK-8365053 real 1019.85 user 1667.45 sys 171.86 > > linux-aarch64 clang > master real 981.77 user 1645.05 sys 118.60 > JDK-8365053 real 791.96 user 1262.92 sys 101.50
Francesco Andreuzzi has updated the pull request incrementally with one additional commit since the last revision: use .d files ------------- Changes: - all: https://git.openjdk.org/jdk/pull/26681/files - new: https://git.openjdk.org/jdk/pull/26681/files/d6cd068b..5672a1b1 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=26681&range=03 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26681&range=02-03 Stats: 55 lines in 2 files changed: 16 ins; 18 del; 21 mod Patch: https://git.openjdk.org/jdk/pull/26681.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/26681/head:pull/26681 PR: https://git.openjdk.org/jdk/pull/26681
