** Description changed: + [Impact] + In parallel builds where a list of image targets are provided, the build may produce binaries that are not part of the named set of targets but are created by series dependencies. These implicitly created binaries may be generated by multiple builds but are unused as our convention for the ubuntu-cpc project is to only consume binaries from the explicitly named image targets; this avoids overwriting the same object by multiple parallel builds. The problem is that as we build out parallel jobs for a number of image targets (multiplied by each supported architecture) we're wasting a lot of resources. + + [Test Case] + + * Specify an image target within the ubuntu-cpc project for a build + + * Observe artifacts in addition to the ones for the named image target + are produced and downloaded + + + [Regression Potential] + + * An artifact from an explicitly named artifact is missing and builds + will begin to remove desired output. Testing is being done to address + this regression. + + [Other Info] + + * This has been running in production in Eoan for a few weeks and we're satisfied with the results. + + [Original Description] + + In parallel builds where a list of image targets are provided, the build + may produce binaries that are not part of the named set of targets but + are created by series dependencies. These implicitly created binaries + may be generated by multiple builds but are unused as our convention for + the ubuntu-cpc project is to only consume binaries from the explicitly + named image targets; this avoids overwriting the same object by multiple + parallel builds. The problem is that as we build out parallel jobs for + a number of image targets (multiplied by each supported architecture) + we're wasting a lot of resources.
** Description changed: [Impact] In parallel builds where a list of image targets are provided, the build may produce binaries that are not part of the named set of targets but are created by series dependencies. These implicitly created binaries may be generated by multiple builds but are unused as our convention for the ubuntu-cpc project is to only consume binaries from the explicitly named image targets; this avoids overwriting the same object by multiple parallel builds. The problem is that as we build out parallel jobs for a number of image targets (multiplied by each supported architecture) we're wasting a lot of resources. [Test Case] - * Specify an image target within the ubuntu-cpc project for a build + * Specify an image target within the ubuntu-cpc project for a build - * Observe artifacts in addition to the ones for the named image target + * Observe artifacts in addition to the ones for the named image target are produced and downloaded + [Regression Potential] - [Regression Potential] - - * An artifact from an explicitly named artifact is missing and builds + * An artifact from an explicitly named artifact is missing and builds will begin to remove desired output. Testing is being done to address this regression. [Other Info] - - * This has been running in production in Eoan for a few weeks and we're satisfied with the results. + + * This has been running in production in Eoan for a few weeks and we're + satisfied with the results. We have seen overall time reduced by 20-50% + on some builds. [Original Description] In parallel builds where a list of image targets are provided, the build may produce binaries that are not part of the named set of targets but are created by series dependencies. These implicitly created binaries may be generated by multiple builds but are unused as our convention for the ubuntu-cpc project is to only consume binaries from the explicitly named image targets; this avoids overwriting the same object by multiple parallel builds. The problem is that as we build out parallel jobs for a number of image targets (multiplied by each supported architecture) we're wasting a lot of resources. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1837254 Title: ubuntu-cpc parallel builds produce unused files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/livecd-rootfs/+bug/1837254/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
