This is an automated email from the ASF dual-hosted git repository. jan pushed a commit to branch parallel-eunit in repository https://gitbox.apache.org/repos/asf/couchdb.git
commit a75a12b64ccb3f3f20522a7cb93b512f52648ecd Author: Jan Lehnardt <[email protected]> AuthorDate: Thu Dec 4 10:33:59 2025 +0100 doc: explain parallel make feature --- README-DEV.rst | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/README-DEV.rst b/README-DEV.rst index a2eec4b44..6726db005 100644 --- a/README-DEV.rst +++ b/README-DEV.rst @@ -223,6 +223,22 @@ to specify exact ``rebar eunit`` options:: make eunit EUNIT_OPTS="apps=couch,chttpd" +Running Erlang tests in Parallel +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +If you have GNU make (`gmake`) installed, you can supply a `-jN` parameter to +run as many jobs in parallel. To avoid clobbering output, use the +`--output-sync` option. + + gmake eunit -j2 --output-sync=target + +This runs two test modules in parallel at a time. On a machine with two or more +CPUs, this should reduce the total wall clock time of testing to up to one half. + +Higher `N` might also work, but the test suite is still undergoing hardening to +support full parallelism, so spurious errors that do not occur with `-j1` might +show up. + Elixir Integration Tests ~~~~~~~~~~~~~~~~~~~~~~~~
