Howdy. I have an Ubuntu 14.04 LTS, configured with huge pages (4x1GB, disabled transparent) and a later kernel than what ships with 14.04.
root@ff2:~# uname -a Linux ff2 3.16.7-ckt11-061515+ #1 SMP Mon Jun 15 18:47:13 CDT 2015 x86_64 x86_64 x86_64 GNU/Linux It had postgresql-9.3 on it and I installed postgresql-9.5 via these steps: aptitude remove -y postgresql-9.3 echo "deb http://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main 9.5" > /etc/apt/sources.list.d/postgresql.list apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 7FCC7D46ACCC4CF8 apt-get update apt-get install -y postgresql-client-9.5 postgresql-common postgresql-9.5 At the end of the install, these were emitted to the screen: Setting up postgresql-9.5 (9.5.4-1.pgdg14.04+2) ... Creating new cluster 9.5/main ... config /etc/postgresql/9.5/main data /var/lib/postgresql/9.5/main locale en_US.UTF-8 LOG: munmap(0x7fff80000000) failed: Invalid argument [... snip 14 or so repeats ...] LOG: munmap(0x7fff80000000) failed: Invalid argument socket /var/run/postgresql port 5433 update-alternatives: using /usr/share/postgresql/9.5/man/man1/postmaster.1.gz to provide /usr/share/man/man1/postmaster.1.gz (postmaster.1.gz) in auto mode * Starting PostgreSQL 9.5 database server [ OK ] Processing triggers for libc-bin (2.19-0ubuntu6.6) ... I'm able to connect and I dumped a few default relations. Is the munmap error of concern? It remains upon rebooting / restarting the server. Thanks, Chris