* shmall is total for all processes (in pages) * shmmax is the maximum size of single contiguous shared memory segment (in bytes) Both should be tuned to be large enough (obviously shmmax should be able to fit into shmall) If the memory is locked you may need to tune /etc/security/limits.conf too. Another setting which affects shared memory are huge pages (I don't know if PostgreSQL could utilize that feature) On Tue, Oct 4, 2011 at 18:53, John R Pierce <pierce at hogranch.com> wrote: > On 10/04/11 8:45 AM, Alexander Farber wrote: > > on CentOS 6 / 64 bit what is please the best way > > to permanently increase the shared memory? > > /etc/sysctl.conf > > > > -- > john r pierce N 37, W 122 > santa cruz ca mid-left coast > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >