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< 	o Store disk pages with no alignment/padding?
>
> 	  This involves having the user-specified order of columns
> 	  be different from the physical order.  SELECT * would
> 	  need to reorder the physical values to match the
> 	  user-specified ordering.
>
> 	o Store disk pages with no alignment/padding?
>
> 	  This necessitates adding CPU-required padding when moving
> 	  rows from disk to memory.
>
>
> 	  http://archives.postgresql.org/pgsql-hackers/2006-09/msg00848.php
>
REL8_2_STABLE
Bruce Momjian 19 years ago
parent 9256b84e61
commit 7f75537cd7
2 changed files with 28 additions and 5 deletions
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  1. 17
      doc/TODO
  2. 16
      doc/src/FAQ/TODO.html

17
doc/TODO
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@ -2,7 +2,7 @@
PostgreSQL TODO List
====================
Current maintainer: Bruce Momjian (bruce@momjian.us)
Last updated: Tue Sep 12 17:02:34 EDT 2006
Last updated: Thu Sep 14 13:11:44 EDT 2006
The most recent version of this document can be viewed at
http://www.postgresql.org/docs/faqs.TODO.html.
@ -1350,9 +1350,22 @@ Miscellaneous Performance
* Consider ways of storing rows more compactly on disk
o Store disk pages with no alignment/padding?
o Reorder physical storage order to reduce padding?
This involves having the user-specified order of columns
be different from the physical order. SELECT * would
need to reorder the physical values to match the
user-specified ordering.
o Store disk pages with no alignment/padding?
This necessitates adding CPU-required padding when moving
rows from disk to memory.
o Support a smaller header for short variable-length fields?
http://archives.postgresql.org/pgsql-hackers/2006-09/msg00848.php
o Reduce the row header size?

16
doc/src/FAQ/TODO.html
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@ -8,7 +8,7 @@
<body bgcolor="#FFFFFF" text="#000000" link="#FF0000" vlink="#A00000" alink="#0000FF">
<h1><a name="section_1">PostgreSQL TODO List</a></h1>
<p>Current maintainer: Bruce Momjian (<a href="mailto:bruce@momjian.us">bruce@momjian.us</a>)<br/>
Last updated: Tue Sep 12 17:02:34 EDT 2006
Last updated: Thu Sep 14 13:11:44 EDT 2006
</p>
<p>The most recent version of this document can be viewed at<br/>
<a href="http://www.postgresql.org/docs/faqs.TODO.html">http://www.postgresql.org/docs/faqs.TODO.html</a>.
@ -1217,9 +1217,19 @@ first.
</p>
</li><li>Consider ways of storing rows more compactly on disk
<ul>
<li>Store disk pages with no alignment/padding?
</li><li>Reorder physical storage order to reduce padding?
<li>Reorder physical storage order to reduce padding?
<p> This involves having the user-specified order of columns
be different from the physical order. SELECT * would
need to reorder the physical values to match the
user-specified ordering.
</p>
</li><li>Store disk pages with no alignment/padding?
<p> This necessitates adding CPU-required padding when moving
rows from disk to memory.
</p>
</li><li>Support a smaller header for short variable-length fields?
<p> <a href="http://archives.postgresql.org/pgsql-hackers/2006-09/msg00848.php">http://archives.postgresql.org/pgsql-hackers/2006-09/msg00848.php</a>
</p>
</li><li>Reduce the row header size?
</li></ul>
</li></ul>

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