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Commit 5495575

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Re-order item.
> * Auto-fill the free space map by scanning the buffer cache or by > checking pages written by the background writer < * Auto-fill the free space map by scanning the buffer cache or by < checking pages written by the background writer
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doc/TODO

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PostgreSQL TODO List
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====================
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Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
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Last updated: Fri Jun 17 09:47:23 EDT 2005
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Last updated: Fri Jun 17 15:20:21 EDT 2005
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The most recent version of this document can be viewed at
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http://www.postgresql.org/docs/faqs.TODO.html.
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This allows vacuum to target specific pages for possible free space
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without requiring a sequential scan.
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* Auto-fill the free space map by scanning the buffer cache or by
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checking pages written by the background writer
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* Create a bitmap of pages that need vacuuming
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Instead of sequentially scanning the entire table, have the background
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writer or some other process record pages that have expired rows, then
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VACUUM can look at just those pages rather than the entire table. In
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the event of a system crash, the bitmap would probably be invalidated.
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* Auto-fill the free space map by scanning the buffer cache or by
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checking pages written by the background writer
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* Auto-vacuum
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o Move into the backend code
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o Use free-space map information to guide refilling

doc/src/FAQ/TODO.html

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<body bgcolor="#FFFFFF" text="#000000" link="#FF0000" vlink="#A00000" alink="#0000FF">
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<h1><a name="section_1">PostgreSQL TODO List</a></h1>
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<p>Current maintainer: Bruce Momjian (<a href="mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</a>)<br/>
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Last updated: Fri Jun 17 09:47:23 EDT 2005
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Last updated: Fri Jun 17 15:20:21 EDT 2005
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</p>
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<p>The most recent version of this document can be viewed at<br/>
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<a href="http://www.postgresql.org/docs/faqs.TODO.html">http://www.postgresql.org/docs/faqs.TODO.html</a>.
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<p> This allows vacuum to target specific pages for possible free space
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without requiring a sequential scan.
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</p>
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</li><li>Auto-fill the free space map by scanning the buffer cache or by
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checking pages written by the background writer
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</li><li>Create a bitmap of pages that need vacuuming
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<p> Instead of sequentially scanning the entire table, have the background
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writer or some other process record pages that have expired rows, then
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VACUUM can look at just those pages rather than the entire table. In
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the event of a system crash, the bitmap would probably be invalidated.
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</p>
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</li><li>Auto-fill the free space map by scanning the buffer cache or by
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checking pages written by the background writer
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</li><li>Auto-vacuum
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<ul>
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<li>Move into the backend code

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