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ros-tooling / cross_compile

A tool to build ROS and ROS2 workspaces for various targets
Apache License 2.0
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`export_workspace_sysroot_image` takes too much time #62

Closed deitry closed 4 years ago

deitry commented 4 years ago

For reference: https://github.com/ros-tooling/cross_compile/blob/5fa1f16e96e5002ae2abdf189f46389788864d55/cross_compile/sysroot_compiler.py#L293

Export takes much more time than build itself. On my PC build time of packages up to rcl takes about 15-20 mins and export took more than half-hour before I drop it - while docker cp directly from resulting image lasts for seconds.

As far as I can see, this is happening because export process itself is single-threaded, though I didn't noticed what actually takes so long.

piraka9011 commented 4 years ago

Once assets are compiled in the Dockerfile, we remove previous assets in the sysroot and replace them with the cross-compiled binaries and libraries. Exporting is a docker-py specifc task so there's not much we can do to optimize there to the best of my knowledge.

piraka9011 commented 4 years ago

Resolved by #63