Need suggestions on kernel settings for dedicated FreeBSD/Postgresql machine

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Everyone,

I manage a freeBSD server that is dedicated to postgresql.  The
machine has 4 gigs of ram and there is a single database powering a
web application that is hosted on a neighboring machine.  The web
application is mostly reading the database but there are considerable
writes and I don't want to tune the machine exclusively for writes.  I
realize more information would be needed to optimally tune the machine
but I am seeking advice on making some sane kernel settings for a
general purpose database on a dedicated system.  Currently I have:

$ cat /etc/sysctl.conf

kern.ipc.shmmax=268435456
kern.ipc.shmall=65536

and

$ cat /boot/loader.conf
kern.ipc.semmni="256"
kern.ipc.semmns="512"
kern.ipc.semmnu="256"

In postgresql.conf I have:

max_connections = 180
shared_buffers = 28MB

I would like to increase this to 256 connections and make sure the
kernel settings are giving postgresql enough breathing room without.
I suspect my settings are conservative and since the machine is
dedicated to postgresql I would like to give it more resources if they
could be used.  Any suggestions?

culley

-- 
Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance

[Postgresql General]     [Postgresql PHP]     [PHP Users]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Yosemite]

  Powered by Linux