Re: O_DIRECT in freebsd

From: Sailesh Krishnamurthy <sailesh(at)cs(dot)berkeley(dot)edu>
To: Doug McNaught <doug(at)mcnaught(dot)org>
Cc: Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: O_DIRECT in freebsd
Date: 2003-10-30 17:55:38
Message-ID: bxy3cday5id.fsf@datafix.cs.berkeley.edu
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DB2 supports cooked and raw file systems - SMS (System Manged Space)
and DMS (Database Managed Space) tablespaces.

The DB2 experience is that DMS tends to outperform SMS but requires
considerable tuning and administrative overhead to see these wins.

--
Pip-pip
Sailesh
http://www.cs.berkeley.edu/~sailesh

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