Alvaro Herrera escribió: > Sergey Konoplev escribió: > > I wasn't talking about a built-in support. It was about an ability (a > > way) to back sh_buf with hugepages. > > Then what you need is to set > dynamic_shared_memory_type = sysv > in postgresql.conf.
The above is mistaken -- there's no way to disable the mmap() segment in 9.3, other than recompiling with EXEC_BACKEND which is probably undesirable for other reasons. I don't think I had ever heard of that recipe to use huge pages in previous versions; since the win is probably significant in some systems, we could have made this configurable. -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers