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Re: The results of my PostgreSQL/filesystem performance tests

From: Vivek Khera <khera(at)kcilink(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: The results of my PostgreSQL/filesystem performance tests
Date: 2003-08-28 20:20:24
Message-ID: x7d6ep1qlz.fsf@yertle.int.kciLink.com (view raw or flat)
Thread:
Lists: pgsql-performance
>>>>> "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.

Where/how does one set this?  In postgresql.conf or on the file system
or during compilation of postgres?  I'm on FreeBSD 4.8 still.

I've got a box right now on which I'm comparing the speed merits of
hardware RAID10, RAID5, and RAID50 using a filesystem benchmark
utility (bonnie++).  If I have time I'm gonna try different striping
block sizes.  Right now I'm using 32k byte stripe size.

-- 
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Vivek Khera, Ph.D.                Khera Communications, Inc.
Internet: khera(at)kciLink(dot)com       Rockville, MD       +1-240-453-8497
AIM: vivekkhera Y!: vivek_khera   http://www.khera.org/~vivek/

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