On Fri Mar 13, 2026 at 7:02 AM CET, Sundeep KOKKONDA via lists.openembedded.org wrote: > 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]> > ---
Hi Sundeep, It looks like this is causing some reproducibility issues: AssertionError: The following deb packages are different and not in exclusion list: /srv/pokybuild/yocto-worker/reproducible/build/build-st/reproducibleB-extended/tmp/deploy/deb/./x86-64-v3/rust-dbg_1.94.0-r0_amd64.deb /srv/pokybuild/yocto-worker/reproducible/build/build-st/reproducibleB-extended/tmp/deploy/deb/./x86-64-v3/rust_1.94.0-r0_amd64.deb The following ipk packages are different and not in exclusion list: /srv/pokybuild/yocto-worker/reproducible/build/build-st/reproducibleB-extended/tmp/deploy/ipk/./x86-64-v3/rust-dbg_1.94.0-r0_x86-64-v3.ipk /srv/pokybuild/yocto-worker/reproducible/build/build-st/reproducibleB-extended/tmp/deploy/ipk/./x86-64-v3/rust_1.94.0-r0_x86-64-v3.ipk The following rpm packages are different and not in exclusion list: /srv/pokybuild/yocto-worker/reproducible/build/build-st/reproducibleB-extended/tmp/deploy/rpm/./x86_64_v3/rust-1.94.0-r0.x86_64_v3.rpm /srv/pokybuild/yocto-worker/reproducible/build/build-st/reproducibleB-extended/tmp/deploy/rpm/./x86_64_v3/rust-dbg-1.94.0-r0.x86_64_v3.rpm Diffoscope output is here: https://valkyrie.yocto.io/pub/repro-fail/oe-reproducible-20260313-gl43mwtc/packages/diff-html/ Can you have a look at it? Thanks, Mathieu -- Mathieu Dubois-Briand, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
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