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VACUUM Performance

From: "Steve Oualline" <soualline(at)stbernard(dot)com>
To: <pgsql-performance(at)postgresql(dot)org>
Cc: "Jiu Zheng" <Jiu(at)stbernard(dot)com>
Subject: VACUUM Performance
Date: 2006-10-20 21:42:30
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance
Question:   I have a big table with 120,000,000 records.

Let's assume that I DELETE 4,000,000 records, VACUUM FULL, and REINDEX.

Now I have the same table, but with 240,000,000 records.

I DELETE 8,000,000 records, VACUUM FULL, and REINDEX.

Should the second operation with twice the data take twice the time as the first?


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