From: Sundeep KOKKONDA <[email protected]> Enabled the parallel-frontend-threads for faster compilation of rust code.
Test Results: A few tests (bitbake rust) ran by with and without enabling this option. - Machine config: Intel(R) Xeon(R) CPU E5-4669 v3 @ 2.10GHz with 144 CPUs. - Avg. default build time (w/o this option) - 56m 50.104s - Avg. build time with this option - 49m 17.224s - Performance Difference - 7m 32.880s faster builds (≈ 13.3%) parallel-frontend-threads is limited to a max of 8 for best results. More info - https://blog.rust-lang.org/2023/11/09/parallel-rustc/ Signed-off-by: Sundeep KOKKONDA <[email protected]> --- meta/recipes-devtools/rust/rust_1.94.0.bb | 1 + 1 file changed, 1 insertion(+) diff --git a/meta/recipes-devtools/rust/rust_1.94.0.bb b/meta/recipes-devtools/rust/rust_1.94.0.bb index 2be0bd8d89..3ef80444bc 100644 --- a/meta/recipes-devtools/rust/rust_1.94.0.bb +++ b/meta/recipes-devtools/rust/rust_1.94.0.bb @@ -139,6 +139,7 @@ python do_configure() { config.set("rust", "llvm-tools", e(False)) config.set("rust", "lld", e(False)) config.set("rust", "use-lld", e(False)) + config.set("rust", "parallel-frontend-threads", min(oe.utils.parallel_make(d),8)) config.set("rust", "channel", e(d.expand("${RUST_CHANNEL}"))) # Whether or not to optimize the compiler and standard library -- 2.49.0
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