Skip site navigation (1) Skip section navigation (2)

Re: FreeBSD page size (was Re: The results of my

From: "scott(dot)marlowe" <scott(dot)marlowe(at)ihs(dot)com>
To: Vivek Khera <khera(at)kcilink(dot)com>
Cc: <pgsql-performance(at)postgresql(dot)org>
Subject: Re: FreeBSD page size (was Re: The results of my
Date: 2003-09-04 21:56:22
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance
On Wed, 3 Sep 2003, Vivek Khera wrote:

> >>>>> "SC" == Sean Chittenden <sean(at)chittenden(dot)org> writes:
> >> I need to step in and do 2 things:
> SC> Thanks for posting that.  Let me know if you have any questions while
> SC> doing your testing.  I've found that using 16K blocks on FreeBSD
> SC> results in about an 8% speedup in writes to the database, fwiw.
> Just double checking: if I do this, then I need to halve the
> parameters in postgresql.conf that involve buffers, specifically,
> max_fsm_pages and shared_buffers.  I think max_fsm_pages should be
> adjusted since the number of pages in the system overall has been
> halved.
> Anything else that should be re-tuned for this?

Yes, effective_cache_size as well is measured in pgsql blocks.

In response to

pgsql-performance by date

Next:From: Bruce MomjianDate: 2003-09-04 22:12:46
Subject: Re: FreeBSD page size
Previous:From: Vivek KheraDate: 2003-09-04 20:56:09
Subject: Re: FreeBSD page size

Privacy Policy | About PostgreSQL
Copyright © 1996-2017 The PostgreSQL Global Development Group