On Fri, Jan 26, 2018 at 9:38 AM, Claudio Freire <klaussfre...@gmail.com> wrote: > I had the tests running in a loop all day long, and I cannot reproduce > that variance. > > Can you share your steps to reproduce it, including configure flags?
Here are two build logs where it failed: https://travis-ci.org/postgresql-cfbot/postgresql/builds/332968819 https://travis-ci.org/postgresql-cfbot/postgresql/builds/332592511 Here's one where it succeeded: https://travis-ci.org/postgresql-cfbot/postgresql/builds/333139855 The full build script used is: ./configure --enable-debug --enable-cassert --enable-coverage --enable-tap-tests --with-tcl --with-python --with-perl --with-ldap --with-icu && make -j4 all contrib docs && make -Otarget -j3 check-world This is a virtualised 4 core system. I wonder if "make -Otarget -j3 check-world" creates enough load on it to produce some weird timing effect that you don't see on your development system. -- Thomas Munro http://www.enterprisedb.com