Add description for variable-length header:

bmomjian · bmomjian · commit fa2801e36122 · 2006-09-14T17:34:14.000Z
&gt; 	  One idea is to store the header in network byte order (high bits
&gt; 	  first), and read the high bits to determine the header length.
diff --git a/doc/TODO b/doc/TODO
@@ -2,7 +2,7 @@
 PostgreSQL TODO List
 ====================
 Current maintainer:	Bruce Momjian (bruce@momjian.us)
-Last updated:		Thu Sep 14 13:14:41 EDT 2006
+Last updated:		Thu Sep 14 13:34:00 EDT 2006
 
 The most recent version of this document can be viewed at
 http://www.postgresql.org/docs/faqs.TODO.html.
@@ -1365,6 +1365,8 @@ Miscellaneous Performance
 
 	o Support a smaller header for short variable-length fields?
 
+	  One idea is to store the header in network byte order (high bits
+	  first), and read the high bits to determine the header length.
 	  http://archives.postgresql.org/pgsql-hackers/2006-09/msg00848.php
 
 	o Reduce the row header size?
diff --git a/doc/src/FAQ/TODO.html b/doc/src/FAQ/TODO.html
@@ -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:           Thu Sep 14 13:14:41 EDT 2006
+Last updated:           Thu Sep 14 13:34:00 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>.
@@ -1229,7 +1229,9 @@ <h1><a name="section_21">Miscellaneous Performance</a></h1>
           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>          One idea is to store the header in network byte order (high bits
+          first), and read the high bits to determine the header length.
+          <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>
