Re: PostgreSQL win32 fragmentation issue

From: "Thomas H(dot)" <me(at)alternize(dot)com>
To: "Andrew Dunstan" <andrew(at)dunslane(dot)net>, "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>
Cc: "Martijn van Oosterhout" <kleptog(at)svana(dot)org>, "PostgreSQL-development" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: PostgreSQL win32 fragmentation issue
Date: 2006-12-02 18:35:31
Message-ID: 0f5b01c71640$a65ab930$0201a8c0@iwing
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> (I should have thought a single file DB would be MORE liable to
> fragmentation, BTW).

AFAIK what mssql does against fragmentation is: it preallocates its
tablespace in chunks of several mb/gb and then starts filling the free
allocated space until it has to reallocate more. the fragmentation for such
a single file (actually in most times 2 files for mssql) is practically
ignorable.

- thomas

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