From: ktm@rice.edu <ktm@rice.edu>
To: Campbell, Lance <lance@illinois.edu>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: Tablespaces on a raid configuration
Date: Fri, 30 Mar 2012 09:53:48 -0500
Message-ID: <20120330145348.GS2533@aart.rice.edu> (raw)
In-Reply-To: <B75CD08C73BD3543B97E4EF3964B7D701E442099@CITESMBX5.ad.uillinois.edu>
References: <B75CD08C73BD3543B97E4EF3964B7D701E442099@CITESMBX5.ad.uillinois.edu>
On Fri, Mar 30, 2012 at 02:45:36PM +0000, Campbell, Lance wrote:
> PostgreSQL 9.0.x
> When PostgreSQL storage is using a relatively large raid 5 or 6 array is there any value in having your tables distributed across multiple tablespaces if those tablespaces will exists on the same raid array? I understand the value if you were to have the tablespaces on different raid arrays. But what about on the same one?
>
>
> Thanks,
>
> Lance Campbell
> Software Architect
> Web Services at Public Affairs
> 217-333-0382
>
I have seen previous discussions about using different filesystems versus
a single filesystem and one advantage that multiple tablespaces have is
that an fsync on one table/tablespace would not block or be blocked by
an fsync on a different table/tablespace at the OS level.
Regards,
Ken
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To: pgsql-performance@postgresql.org
Cc: ktm@rice.edu, lance@illinois.edu
Subject: Re: Tablespaces on a raid configuration
In-Reply-To: <20120330145348.GS2533@aart.rice.edu>
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