Skip to content

P
Postgres FD Implementation
Commit c0d92dc4 authored by Bruce Momjian's avatar Bruce Momjian
Browse files
Options

Update SGML release notes with Peter's direction. Does not compile 

because of section adjustments still needed.
parent 216bc110
Show whitespace changes
Inline Side-by-side
Showing with 111 additions and 131 deletions
doc/src/sgml/release.sgml
View file @ c0d92dc4
<!-- <!--
$Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.223 2003/10/30 19:43:01 momjian Exp $ $Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.224 2003/10/30 20:25:36 momjian Exp $
--> -->
<appendix id="release"> <appendix id="release">
...@@ -10,11 +10,10 @@ $Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.223 2003/10/30 19:43:01 mo ...@@ -10,11 +10,10 @@ $Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.223 2003/10/30 19:43:01 mo
<sect2><title>Overview</title> <sect2><title>Overview</title>
<para> Major changes in this release: <para> Major changes in this release:
<glosslist>
<glossentry><glossterm> Performance</glossterm> <itemizedlist>
<glossdef><para> IN/NOT IN subqueries are now much more efficient <listitem><para> IN/NOT IN subqueries are now much more efficient</para>
<sect3> <sect3>
<para> <para>
In previous releases, IN/NOT IN subqueries were joined to the In previous releases, IN/NOT IN subqueries were joined to the
...@@ -24,9 +23,9 @@ $Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.223 2003/10/30 19:43:01 mo ...@@ -24,9 +23,9 @@ $Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.223 2003/10/30 19:43:01 mo
than EXISTS subqueries. than EXISTS subqueries.
</para> </para>
</sect3> </sect3>
</para> </listitem>
<para> Improved GROUP BY processing by using hash buckets <listitem><para> Improved GROUP BY processing by using hash buckets</para>
<sect3> <sect3>
<para> <para>
In previous releases, GROUP BY totals were accumulated by In previous releases, GROUP BY totals were accumulated by
...@@ -37,18 +36,18 @@ $Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.223 2003/10/30 19:43:01 mo ...@@ -37,18 +36,18 @@ $Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.223 2003/10/30 19:43:01 mo
number of distinct GROUP BY values. number of distinct GROUP BY values.
</para> </para>
</sect3> </sect3>
</para> </listitem>
<para> New multi-key hash join capability <listitem><para> New multi-key hash join capability</para>
<sect3> <sect3>
<para> <para>
In previous releases, hash joins could only occur on single-column In previous releases, hash joins could only occur on single-column
joins. This release allows multi-column hash joins. joins. This release allows multi-column hash joins.
</para> </para>
</sect3> </sect3>
</para> </listitem>
<para> ANSI joins are now better optimized <listitem><para> ANSI joins are now better optimized</para>
<sect3> <sect3>
<para> <para>
Prior releases evaluated ANSI join syntax only in the order Prior releases evaluated ANSI join syntax only in the order
...@@ -57,9 +56,10 @@ $Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.223 2003/10/30 19:43:01 mo ...@@ -57,9 +56,10 @@ $Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.223 2003/10/30 19:43:01 mo
all possible join orderings and chooses the most efficient. all possible join orderings and chooses the most efficient.
</para> </para>
</sect3> </sect3>
</para> </listitem>
<para> Faster and more powerful regular expression code <listitem><para> Faster and more powerful regular expression code
</para>
<sect3> <sect3>
<para> <para>
The entire regular expression module has been replaced with a new The entire regular expression module has been replaced with a new
...@@ -68,9 +68,9 @@ $Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.223 2003/10/30 19:43:01 mo ...@@ -68,9 +68,9 @@ $Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.223 2003/10/30 19:43:01 mo
of regular expressions. of regular expressions.
</para> </para>
</sect3> </sect3>
</para> </listitem>
<para> Function-inlining for simple SQL functions <listitem><para> Function-inlining for simple SQL functions</para>
<sect3> <sect3>
<para> <para>
Simple SQL functions can now be inlined by including their SQL Simple SQL functions can now be inlined by including their SQL
...@@ -79,13 +79,10 @@ $Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.223 2003/10/30 19:43:01 mo ...@@ -79,13 +79,10 @@ $Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.223 2003/10/30 19:43:01 mo
SQL functions to behave like macros. SQL functions to behave like macros.
</para> </para>
</sect3> </sect3>
</para></glossdef> </listitem>
</glossentry>
<glossentry> <glossterm> IPv6</glossterm>
<glossdef><para> Full support for IPv6 connections and IPv6 address <listitem><para> Full support for IPv6 connections and IPv6 address
data types data types</para>
<sect3> <sect3>
<para> <para>
Prior releases allowed only IPv6 connections and IP data types only Prior releases allowed only IPv6 connections and IP data types only
...@@ -93,26 +90,20 @@ data types ...@@ -93,26 +90,20 @@ data types
both of these areas. both of these areas.
</para> </para>
</sect3> </sect3>
</para></glossdef> </listitem>
</glossentry>
<glossentry><glossterm> SSL</glossterm>
<glossdef><para> Major improvements in SSL performance and <listitem><para> Major improvements in SSL performance and
reliability reliability</para>
<sect3> <sect3>
<para> <para>
Several people very familiar with the SSL API have overhauled our Several people very familiar with the SSL API have overhauled our
SSL code to improve SSL key negotiation and error recovery. SSL code to improve SSL key negotiation and error recovery.
</para> </para>
</sect3> </sect3>
</para></glossdef> </listitem>
</glossentry>
<glossentry><glossterm> Index Growth Prevention</glossterm>
<glossdef><para> Allow free space map to efficiently reuse empty index <listitem><para> Allow free space map to efficiently reuse empty index
pages, and other free space management improvements. pages, and other free space management improvements.</para>
<sect3> <sect3>
<para> <para>
In prior releases, index pages that were left empty because of In prior releases, index pages that were left empty because of
...@@ -122,38 +113,30 @@ pages, and other free space management improvements. ...@@ -122,38 +113,30 @@ pages, and other free space management improvements.
rows. rows.
</para> </para>
</sect3> </sect3>
</para></glossdef> </listitem>
</glossentry>
<glossentry><glossterm> Standards Compliance</glossterm>
<glossdef><para>Implement information schema</para> <listitem><para>Implement information schema</para>
</listitem>
<para>Support for read-only transactions </para> <listitem><para>Support for read-only transactions </para>
</listitem>
<para>Make cursors comply more closely with the SQL standard <listitem><para>Make cursors comply more closely with the SQL standard
</para></glossdef> </para></glossdef>
</listitem>
</glossentry> <listitem><para> New protocol improves connection speed/reliability,
<glossentry><glossterm> New Client/Server Communication
Protocol</glossterm>
<glossdef><para> New protocol improves connection speed/reliability,
and adds error codes, status information, a binary protocol, error and adds error codes, status information, a binary protocol, error
reporting verbosity, and cleaner startup packets.</para></glossdef> reporting verbosity, and cleaner startup packets.</para></glossdef>
</glossentry> </listitem>
<glossentry><glossterm> Holdable Cursors</glossterm>
<glossdef><para> Allow cursors to exist outside transactions
</para></glossdef>
</glossentry>
<glossentry><glossterm> Threads</glossterm> <listitem><glossdef><para> Allow cursors to exist outside transactions,
also called holdable cursors
</para>
</listitem>
<glossdef><para> libpq and ecpg are now fully thread-safe with <listitem><glossdef><para> libpq and ecpg are now fully thread-safe with
--enable-thread-safety --enable-thread-safety</para>
<sect3> <sect3>
<para> <para>
While prior libpq releases already supported threads, this release While prior libpq releases already supported threads, this release
...@@ -161,14 +144,12 @@ reporting verbosity, and cleaner startup packets.</para></glossdef> ...@@ -161,14 +144,12 @@ reporting verbosity, and cleaner startup packets.</para></glossdef>
was used in the database connection routines. was used in the database connection routines.
</para> </para>
</sect3> </sect3>
</para></glossdef> </listitem>
</glossentry>
<glossentry><glossterm> Contrib</glossterm>
<glossdef><para> New version of full text indexing (tsearch2)</para> <listitem><para> New version of full text indexing in /contrib/tsearch2</para>
</listitem>
<para> New autovacuum tool <listitem><para> New autovacuum tool in /contrib</para>
<sect3> <sect3>
<para> <para>
This new tool monitors the database statistics tables for This new tool monitors the database statistics tables for
...@@ -176,19 +157,18 @@ reporting verbosity, and cleaner startup packets.</para></glossdef> ...@@ -176,19 +157,18 @@ reporting verbosity, and cleaner startup packets.</para></glossdef>
needed. needed.
</para> </para>
</sect3> </sect3>
</para> </listitem>
<para> Array handling has been improved and moved into the main <listitem><para> Array handling has been improved and moved into the main
server server</para>
<sect3> <sect3>
<para> <para>
Many array limitations have been removed and they behave more like Many array limitations have been removed and they behave more like
fully-supported data types. fully-supported data types.
</para> </para>
</sect3> </sect3>
</para></glossdef> </listitem>
</glossentry> </itemizedlist></para></sect2>
</glosslist></para></sect2>
<sect2><title> Migration to version 7.4</title> <sect2><title> Migration to version 7.4</title>
...@@ -198,7 +178,7 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -198,7 +178,7 @@ required for those wishing to migrate data from any previous release.</para>
<para> Observe the following incompatibilities: <para> Observe the following incompatibilities:
<itemizedlist> <itemizedlist>
<listitem><para> The server-side autocommit setting was removed and reimplemented <listitem><para> The server-side autocommit setting was removed and reimplemented
in client applications and languages. in client applications and languages.</para>
<sect3> <sect3>
<para> <para>
Server-side autocommit was causing too many problems with Server-side autocommit was causing too many problems with
...@@ -207,29 +187,29 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -207,29 +187,29 @@ required for those wishing to migrate data from any previous release.</para>
and added to individual client API's as appropriate. and added to individual client API's as appropriate.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para> Error message wording has changed substantially in this release, <listitem><para> Error message wording has changed substantially in this release,
and error codes have been added.</para></listitem> and error codes have been added.</para></listitem>
<listitem><para> ANSI inner joins may behave differently because they are now better optimized</para></listitem> <listitem><para> ANSI inner joins may behave differently because they are now better optimized</para></listitem>
<listitem><para> A number of server variables have been renamed for <listitem><para> A number of server variables have been renamed for
clarity, primarily those related to logging</para></listitem> clarity, primarily those related to logging</para></listitem>
<listitem><para> MOVE/FETCH 0 now does nothing <listitem><para> MOVE/FETCH 0 now does nothing</para>
<sect3> <sect3>
<para> <para>
In prior releases, FETCH 0 would fetch all remaining rows, and In prior releases, FETCH 0 would fetch all remaining rows, and
MOVE 0 would move to the end of the cursor. MOVE 0 would move to the end of the cursor.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para> MOVE/FETCH now returns the actual number of rows moved/fetched, or zero <listitem><para> MOVE/FETCH now returns the actual number of rows moved/fetched, or zero
if at the beginning/end of the cursor if at the beginning/end of the cursor</para>
<sect3> <sect3>
<para> <para>
Prior releases would return the tuple count passed to the Prior releases would return the tuple count passed to the
command, not the actual number of rows FETCHed or MOVEd. command, not the actual number of rows FETCHed or MOVEd.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para> COPY now can process carriage-return and <listitem><para> COPY now can process carriage-return and
carriage-return/line-feed end-of-line terminated files.</para></listitem> carriage-return/line-feed end-of-line terminated files.</para></listitem>
<listitem><para>Literal carriage-returns and line-feeds are no <listitem><para>Literal carriage-returns and line-feeds are no
...@@ -238,7 +218,7 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -238,7 +218,7 @@ required for those wishing to migrate data from any previous release.</para>
from <type>CHAR(n)</type> to from <type>CHAR(n)</type> to
<type>VARCHAR(n)</type> / <type>TEXT</type></para></listitem> <type>VARCHAR(n)</type> / <type>TEXT</type></para></listitem>
<listitem><para> <function>FLOAT(p)</function> now measures 'p' in bits, not digits</para></listitem> <listitem><para> <function>FLOAT(p)</function> now measures 'p' in bits, not digits</para></listitem>
<listitem><para> Ambiguous date values now must match the ordering specified by DateStyle <listitem><para> Ambiguous date values now must match the ordering specified by DateStyle</para>
<sect3> <sect3>
<para> <para>
In prior releases, a date of <literal>10/20/03</> was In prior releases, a date of <literal>10/20/03</> was
...@@ -249,17 +229,17 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -249,17 +229,17 @@ required for those wishing to migrate data from any previous release.</para>
current <varname>DateStyle</>. current <varname>DateStyle</>.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para> The <function>oidrand()</function>, <function>oidsrand()</function>, <listitem><para> The <function>oidrand()</function>, <function>oidsrand()</function>,
and <function>userfntest()</function> functions have been removed. and <function>userfntest()</function> functions have been removed.</para>
<sect3> <sect3>
<para> <para>
These functions were determined to be no longer useful. These functions were determined to be no longer useful.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para> <literal>'now'</literal> will no longer work as a column default; <function>now()</> or <listitem><para> <literal>'now'</literal> will no longer work as a column default; <function>now()</> or
<function>CURRENT_TIMESTAMP</> should be used instead <function>CURRENT_TIMESTAMP</> should be used instead</para>
<sect3> <sect3>
<para> <para>
In prior releases, there was special code so the string In prior releases, there was special code so the string
...@@ -272,24 +252,24 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -272,24 +252,24 @@ required for those wishing to migrate data from any previous release.</para>
situations. situations.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para> <literal>'today'</literal> will no longer work as a column default; <function>CURRENT_DATE</> <listitem><para> <literal>'today'</literal> will no longer work as a column default; <function>CURRENT_DATE</>
should be used instead should be used instead</para>
<sect3> <sect3>
<para> <para>
Same description as above. Same description as above.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para> Dollar sign (<literal>$</>) is no longer allowed in operator names</para></listitem> <listitem><para> Dollar sign (<literal>$</>) is no longer allowed in operator names</para></listitem>
<listitem><para> Dollar sign (<literal>$</>) can be a non-first character in identifiers <listitem><para> Dollar sign (<literal>$</>) can be a non-first character in identifiers</para>
<sect3> <sect3>
<para> <para>
This was done to improve compatibility with other database This was done to improve compatibility with other database
systems. systems.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
</itemizedlist></para></sect2> </itemizedlist></para></sect2>
<sect2><title> Server Operation Changes</title> <sect2><title> Server Operation Changes</title>
...@@ -305,31 +285,31 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -305,31 +285,31 @@ required for those wishing to migrate data from any previous release.</para>
</para> </para>
</sect3> </sect3>
</para></listitem> </para></listitem>
<listitem><para>SSL protocol security and performance improvements (Sean Chittenden) <listitem><para>SSL protocol security and performance improvements (Sean Chittenden)</para>
<sect3> <sect3>
<para> <para>
SSL key renegotiation was happening too frequently, causing poor SSL SSL key renegotiation was happening too frequently, causing poor SSL
performance. Also, initial key handling was improved. performance. Also, initial key handling was improved.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Print lock information when a deadlock is detected (Tom) <listitem><para>Print lock information when a deadlock is detected (Tom)</para>
<sect3> <sect3>
<para> <para>
This allows easier debugging of deadlock situations. This allows easier debugging of deadlock situations.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Update <filename>/tmp</filename> socket mod. times regularly to avoid their removal (Tom) <listitem><para>Update <filename>/tmp</filename> socket mod. times regularly to avoid their removal (Tom)</para>
<sect3> <sect3>
<para> <para>
This should help prevent <filename>/tmp</filename> directory cleaner This should help prevent <filename>/tmp</filename> directory cleaner
administration scripts from removing server socket files. administration scripts from removing server socket files.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Enable PAM for MAC OS X (Aaron Hillegass)</para></listitem> <listitem><para>Enable PAM for MAC OS X (Aaron Hillegass)</para></listitem>
<listitem><para>Make btree indexes fully WAL-safe (Tom) <listitem><para>Make btree indexes fully WAL-safe (Tom)</para>
<sect3> <sect3>
<para> <para>
In prior releases, under certain rare cases, a server crash could In prior releases, under certain rare cases, a server crash could
...@@ -337,9 +317,9 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -337,9 +317,9 @@ required for those wishing to migrate data from any previous release.</para>
last few rare cases. last few rare cases.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Allow btree index compaction and empty page reuse (Tom)</para></listitem> <listitem><para>Allow btree index compaction and empty page reuse (Tom)</para></listitem>
<listitem><para>Fix inconsistent index lookups during split of first root page (Tom) <listitem><para>Fix inconsistent index lookups during split of first root page (Tom)</para>
<sect3> <sect3>
<para> <para>
In prior releases, when a single-page index split into two page, In prior releases, when a single-page index split into two page,
...@@ -348,9 +328,9 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -348,9 +328,9 @@ required for those wishing to migrate data from any previous release.</para>
multi-cpu machines. This release fixes that rare failure case. multi-cpu machines. This release fixes that rare failure case.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Improve free space map allocation logic (Tom)</para></listitem> <listitem><para>Improve free space map allocation logic (Tom)</para></listitem>
<listitem><para>Preserve free space information between postmaster restarts (Tom) <listitem><para>Preserve free space information between postmaster restarts (Tom)</para>
<sect3> <sect3>
<para> <para>
In prior releases, the free space map was not saved when the In prior releases, the free space map was not saved when the
...@@ -359,7 +339,7 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -359,7 +339,7 @@ required for those wishing to migrate data from any previous release.</para>
when the server is restarted. when the server is restarted.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Set proper schema permissions in initdb (Peter)</para></listitem> <listitem><para>Set proper schema permissions in initdb (Peter)</para></listitem>
<listitem><para>Add start time to pg_stat_activity (Neil)</para></listitem> <listitem><para>Add start time to pg_stat_activity (Neil)</para></listitem>
<listitem><para>New code to detect corrupt disk pages; erase with zero_damaged_pages (Tom)</para></listitem> <listitem><para>New code to detect corrupt disk pages; erase with zero_damaged_pages (Tom)</para></listitem>
...@@ -380,7 +360,7 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -380,7 +360,7 @@ required for those wishing to migrate data from any previous release.</para>
<listitem><para>Allow multi-key hash joins (Tom)</para></listitem> <listitem><para>Allow multi-key hash joins (Tom)</para></listitem>
<listitem><para>Improve constant folding (Tom)</para></listitem> <listitem><para>Improve constant folding (Tom)</para></listitem>
<listitem><para>Add ability to inline simple SQL functions (Tom)</para></listitem> <listitem><para>Add ability to inline simple SQL functions (Tom)</para></listitem>
<listitem><para>Reduce memory usage for queries using complex functions (Tom) <listitem><para>Reduce memory usage for queries using complex functions (Tom)</para>
<sect3> <sect3>
<para> <para>
In prior releases, functions returning allocated memory would In prior releases, functions returning allocated memory would
...@@ -389,19 +369,19 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -389,19 +369,19 @@ required for those wishing to migrate data from any previous release.</para>
completes, reducing the total memory used by functions. completes, reducing the total memory used by functions.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Improve GEQO optimizer performance (Tom) <listitem><para>Improve GEQO optimizer performance (Tom)</para>
<sect3> <sect3>
<para> <para>
There were several inefficiencies in the way the GEQO optimizer There were several inefficiencies in the way the GEQO optimizer
managed potential query paths. This release fixes this. managed potential query paths. This release fixes this.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Allow IN/NOT IN to be handled via hash tables (Tom)</para></listitem> <listitem><para>Allow IN/NOT IN to be handled via hash tables (Tom)</para></listitem>
<listitem><para>Improve NOT IN (subquery) performance (Tom)</para></listitem> <listitem><para>Improve NOT IN (subquery) performance (Tom)</para></listitem>
<listitem><para>Allow most IN subqueries to be processed as joins (Tom)</para></listitem> <listitem><para>Allow most IN subqueries to be processed as joins (Tom)</para></listitem>
<listitem><para>Allow the postmaster to preload libraries using preload_libraries (Joe) <listitem><para>Allow the postmaster to preload libraries using preload_libraries (Joe)</para>
<sect3> <sect3>
<para> <para>
For shared libraries that require a long time to load, this option For shared libraries that require a long time to load, this option
...@@ -409,7 +389,7 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -409,7 +389,7 @@ required for those wishing to migrate data from any previous release.</para>
inherited by all database sessions. inherited by all database sessions.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Improve optimizer cost computations, particularly for subqueries (Tom)</para></listitem> <listitem><para>Improve optimizer cost computations, particularly for subqueries (Tom)</para></listitem>
<listitem><para>Avoid sort when subquery ORDER BY matches upper query (Tom)</para></listitem> <listitem><para>Avoid sort when subquery ORDER BY matches upper query (Tom)</para></listitem>
<listitem><para>Assume WHERE a.x = b.y and b.y = 42 also means a.x = 42 (Tom)</para></listitem> <listitem><para>Assume WHERE a.x = b.y and b.y = 42 also means a.x = 42 (Tom)</para></listitem>
...@@ -419,18 +399,18 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -419,18 +399,18 @@ required for those wishing to migrate data from any previous release.</para>
<listitem><para>Add from_collapse_limit to control conversion of subqueries to joins (Tom)</para></listitem> <listitem><para>Add from_collapse_limit to control conversion of subqueries to joins (Tom)</para></listitem>
<listitem><para>Use faster and more powerful regular expression code from TCL (Henry Spencer, Tom)</para></listitem> <listitem><para>Use faster and more powerful regular expression code from TCL (Henry Spencer, Tom)</para></listitem>
<listitem><para>Use bit-mapped relation sets in the optimizer (Tom)</para></listitem> <listitem><para>Use bit-mapped relation sets in the optimizer (Tom)</para></listitem>
<listitem><para>Improve backend startup time (Tom) <listitem><para>Improve backend startup time (Tom)</para>
<sect3> <sect3>
<para> <para>
The new network protocol requires fewer network packets to start a The new network protocol requires fewer network packets to start a
database session. database session.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Improve trigger/constraint performance (Stephan)</para></listitem> <listitem><para>Improve trigger/constraint performance (Stephan)</para></listitem>
<listitem><para>Improve speed of col IN (const, const, const, ...) (Tom)</para></listitem> <listitem><para>Improve speed of col IN (const, const, const, ...) (Tom)</para></listitem>
<listitem><para>Fix hash indexes which were broken in rare cases (Tom)</para></listitem> <listitem><para>Fix hash indexes which were broken in rare cases (Tom)</para></listitem>
<listitem><para>Improve hash index concurrency and speed (Tom) <listitem><para>Improve hash index concurrency and speed (Tom)</para>
<sect3> <sect3>
<para> <para>
Prior releases suffered from poor hash index performance, Prior releases suffered from poor hash index performance,
...@@ -439,40 +419,40 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -439,40 +419,40 @@ required for those wishing to migrate data from any previous release.</para>
btree and hash index performance. btree and hash index performance.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Align shared buffers on 32-byte boundary for copy speed improvement (Manfred Spraul) <listitem><para>Align shared buffers on 32-byte boundary for copy speed improvement (Manfred Spraul)</para>
<sect3> <sect3>
<para> <para>
Certain CPU's perform faster data copies when addresses are 32-bit Certain CPU's perform faster data copies when addresses are 32-bit
aligned. aligned.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>The NUMERIC datatype has been reimplemented for better performance (Tom) <listitem><para>The NUMERIC datatype has been reimplemented for better performance (Tom)</para>
<sect3> <sect3>
<para> <para>
NUMERIC used to be stored in base-100. The new code uses base-10000, NUMERIC used to be stored in base-100. The new code uses base-10000,
for significantly better performance. for significantly better performance.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
</itemizedlist></sect2> </itemizedlist></sect2>
<sect2><title>Server Configuration Changes</title> <sect2><title>Server Configuration Changes</title>
<itemizedlist> <itemizedlist>
<listitem><para>Rename server parameter server_min_messages to log_min_messages (Bruce) <listitem><para>Rename server parameter server_min_messages to log_min_messages (Bruce)ara></l
<sect3> <sect3>
<para> <para>
This was done so most parameters that control the server logs being This was done so most parameters that control the server logs being
with <literal>log_</>. with <literal>log_</>.
</para> </para>
</sect3> </sect3>
</para></listitem> </pistitem>
<listitem><para>Rename show_*_stats to log_*_stats (Bruce)</para></listitem> <listitem><para>Rename show_*_stats to log_*_stats (Bruce)</para></listitem>
<listitem><para>Rename show_source_port to log_source_port (Bruce)</para></listitem> <listitem><para>Rename show_source_port to log_source_port (Bruce)</para></listitem>
<listitem><para>Rename hostname_lookup to log_hostname (Bruce)</para></listitem> <listitem><para>Rename hostname_lookup to log_hostname (Bruce)</para></listitem>
<listitem><para>Add checkpoint_warning to warn of excessive checkpointing (Bruce) <listitem><para>Add checkpoint_warning to warn of excessive checkpointing (Bruce)</para>
<sect3> <sect3>
<para> <para>
In prior releases, it was difficult to determine if checkpoint was In prior releases, it was difficult to determine if checkpoint was
...@@ -480,60 +460,60 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -480,60 +460,60 @@ required for those wishing to migrate data from any previous release.</para>
logs when excessive checkpointing happens. logs when excessive checkpointing happens.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>New read-only server parameters for localization (Tom)</para></listitem> <listitem><para>New read-only server parameters for localization (Tom)</para></listitem>
<listitem><para>Change debug server log messages to output as DEBUG rather than LOG (Bruce)</para></listitem> <listitem><para>Change debug server log messages to output as DEBUG rather than LOG (Bruce)</para></listitem>
<listitem><para>Prevent server log variables from being turned off by non-super users (Bruce) <listitem><para>Prevent server log variables from being turned off by non-super users (Bruce)</para>
<sect3> <sect3>
<para> <para>
This is a security feature so non-super-users can't disable logging This is a security feature so non-super-users can't disable logging
that was enabled by the administrator. that was enabled by the administrator.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>log_min_messages/client_min_messages now controls debug_* output (Bruce) <listitem><para>log_min_messages/client_min_messages now controls debug_* output (Bruce)</para>
<sect3> <sect3>
<para> <para>
This centralizes client debug information so all debug output can This centralizes client debug information so all debug output can
be sent to either the client or server logs. be sent to either the client or server logs.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Add OS X Rendezvous server support (Chris Campbell) <listitem><para>Add OS X Rendezvous server support (Chris Campbell)</para>
<sect3> <sect3>
<para> <para>
This allows OS X machines to query the network for available This allows OS X machines to query the network for available
PostgreSQL servers. PostgreSQL servers.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Add ability to print only slow statements using log_min_duration_statement <listitem><para>Add ability to print only slow statements using log_min_duration_statement
(Christopher) (Christopher) </par
<sect3> <sect3>
<para> <para>
This is an often requested debugging feature that allows administrators to This is an often requested debugging feature that allows administrators to
see only slow queries in their server logs. see only slow queries in their server logs.</para>
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Allow pg_hba.conf to accept netmasks in CIDR format (Andrew Dunstan) <listitem><para>Allow pg_hba.conf to accept netmasks in CIDR format (Andrew Dunstan)</para>
<sect3> <sect3>
<para> <para>
This allows administrators to merge the host IP address and netmask This allows administrators to merge the host IP address and netmask
fields into a single CIDR field in pg_hba.conf. fields into a single CIDR field in pg_hba.conf.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>New is_superuser read-only variable (Tom)</para></listitem> <listitem><para>New is_superuser read-only variable (Tom)</para></listitem>
<listitem><para>New server-side parameter log_error_verbosity to control error detail (Tom) <listitem><para>New server-side parameter log_error_verbosity to control error detail (Tom)</para>
<sect3> <sect3>
<para> <para>
This works with the new error reporting feature to supply additional This works with the new error reporting feature to supply additional
error information like hints, file names and line numbers. error information like hints, file names and line numbers.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>postgres --describe-config now dumps server config variables (Aizaz Ahmed, Peter) <listitem><para>postgres --describe-config now dumps server config variables (Aizaz Ahmed, Peter)</para>
<sect3> <sect3>
<para> <para>
This option is useful for administration tools that need to know the This option is useful for administration tools that need to know the
...@@ -541,8 +521,8 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -541,8 +521,8 @@ required for those wishing to migrate data from any previous release.</para>
and descriptions. and descriptions.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Make default shared_buffers 1000 and max_connections 100, if possible (Tom) <listitem><para>Make default shared_buffers 1000 and max_connections 100, if possible (Tom)</para>
<sect3> <sect3>
<para> <para>
Prior versions defaulted to 64 shared buffers so PostgreSQL would Prior versions defaulted to 64 shared buffers so PostgreSQL would
...@@ -552,7 +532,7 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -552,7 +532,7 @@ required for those wishing to migrate data from any previous release.</para>
and size shared_buffers accordingly. and size shared_buffers accordingly.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Add new columns in pg_settings: context, type, source, min_val, max_val (Joe)</para></listitem> <listitem><para>Add new columns in pg_settings: context, type, source, min_val, max_val (Joe)</para></listitem>
<listitem><para>New pg_hba.conf 'hostnossl' to prevent SSL connections (Jon Jensen) <listitem><para>New pg_hba.conf 'hostnossl' to prevent SSL connections (Jon Jensen)
<sect3> <sect3>
...@@ -562,7 +542,7 @@ required for those wishing to migrate data from any previous release.</para> ...@@ -562,7 +542,7 @@ required for those wishing to migrate data from any previous release.</para>
capability. capability.
</para> </para>
</sect3> </sect3>
</para></listitem> </listitem>
<listitem><para>Remove geqo_random_seed server parameter (Tom)</para></listitem> <listitem><para>Remove geqo_random_seed server parameter (Tom)</para></listitem>
</itemizedlist></sect2> </itemizedlist></sect2>
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment