[obs-commits] [openSUSE/open-build-service] e86fd1: [backend] add batcher support to BSSrcdiff.pm

Branch: refs/heads/master Home: https://github.com/openSUSE/open-build-service Commit: e86fd1e99d58f3e686d3ef59b21edee62101c07c https://github.com/openSUSE/open-build-service/commit/e86fd1e99d58f3e686d3ef... Author: Michael Schroeder Date: 2016-10-24 (Mon, 24 Oct 2016) Changed paths: M src/backend/BSSrcdiff.pm Log Message: ----------- [backend] add batcher support to BSSrcdiff.pm If we need to do lots of diffs for a bif tar archive, we call the diff program from an extra process. While this sounds like something that makes no sense at all, it actually speeds up diffing by a factor of 20. The reason is that fork/exec is much slower if the process has a big memory size. A better approach would be a perl module that does the diffing with no exec at all but alas, there seems to be no such thing (execpt a pure perl version that is too slow).