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From: Sailesh Krishnamurthy <sailesh@cs.berkeley.edu>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: James Rogers <jamesr@best.com>
Cc: pgsql-hackers@postgresql.org
Subject: Re: Database Kernels and O_DIRECT
Date: Wed, 15 Oct 2003 17:49:19 -0700
Message-ID: <bxyllrmxb00.fsf@datafix.cs.berkeley.edu> (raw)
In-Reply-To: <15890.1066232585@sss.pgh.pa.us>
References: <BBB237C0.5B35%jamesr@best.com>
	<15890.1066232585@sss.pgh.pa.us>

>>>>> "Tom" == Tom Lane <tgl@sss.pgh.pa.us> writes:

    Tom> I tend to agree with the opinion that Oracle's architecture
    Tom> is based on twenty-year-old assumptions.  Back then it was
    Tom> reasonable to assume that database-specific algorithms could
    Tom> outperform a general-purpose operating system.  In today's
    Tom> environment that assumption is not a given.


In fact: 

   Michael Stonebraker: Operating System Support for Database Management. 
   CACM 24(7): 412-418 (1981)

   Abstract: 

             Several operating system services are examined with a
             view toward their applicability to support of database
             management functions. These services include buffer pool
             management; the file system; scheduling, process
             management, and interprocess communication; and
             consistency control.

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

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