On Wed, Jul 20, 2016 at 4:45 AM, Gupta, Amar Nath <angupta@xxxxxxxxxx> wrote: > Hello, > > I am working to configure high end PostgreSQL database, and need some help. > > Please can you suggest me best and optimal configuration for > “postgresql.conf” I should use. > > DB server details: > > · PostgreSQL Version: 9.5.3 > > · Disc: RAID 10 (1 TB) > > · DB Size: 250GB > > · RAM: 256GB > > · CPU(s): 48 > > · Max Connection: 2000 > > · OS: CentOS release 6.6 (Final) A few quick pointers. 1: describe what your workload looks like. How you configure a server can vary quite a bit depending on what it's doing. 2: If that RAID-10 is spinning disks pull them, throw them in the trash, and buy some SSDs. A pair of 800GB Intels costs $1000 total, and you don't even need the RAID controller with them to be fast. 3: Pick a distro that can run the 3.11 or higher kernels. IO is MUCH MUCH faster in the later model kernels than in the older 2.6.32 kernel Centos 6 uses. Ubuntu 12.04 can easily run a 3.11 or 3.13 kernel from the standard repos. Not sure about Centos 6, but I'm pretty sure it takes more than a simple rpm command to get a later model kernel into it. 4: Look into connection pooling. NO database is gonna be fast if it has 2,000 connections all active at once. I've got 80 core machines with 3 super fast 1TB SSD cards in them that would fall over under the load of 2,000 active connections. 5: Don't go crazy on shared_buffers. A few gig is usually plenty, let the OS do the majority of the heavy lifting when it comes to caching data. There's more to discuss, but we don't know what you're trying to do yet, so I'll wait to hear back from you (Please keep it on the list so others can benefit) -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin
