1berry/postgres
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

9.2 release note updates from Peter Geoghegan

Browse Source
This commit is contained in:
Bruce Momjian 2012-05-10 13:38:05 -04:00
parent ada8fa08fc
commit ffda90f3af
1 changed files with 24 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
doc/src/sgml/release-9.2.sgml
View File

@ -72,8 +72,8 @@
<para> <para>
Users should now use hstore(text, text). Since Users should now use hstore(text, text). Since
<productname>PostgreSQL</productname> 9.0, we have emitted a <productname>PostgreSQL</productname> 9.0, a warning message is
warning message when an operator named =&gt; is created because emitted when an operator named =&gt; is created because
the <acronym>SQL</acronym> standard reserves that token for the <acronym>SQL</acronym> standard reserves that token for
another use. another use.
</para> </para>
@ -460,17 +460,6 @@
</para> </para>
</listitem> </listitem>
<listitem>
<para>
Make the visibility map crash-safe (Robert Haas, Noah Misch)
</para>
<para>
This helps vacuum be more efficient, and is necessary for
index-only scans.
</para>
</listitem>
<listitem> <listitem>
<para> <para>
Improve GiST box and point index performance by producing better Improve GiST box and point index performance by producing better
@ -545,9 +534,19 @@
<listitem> <listitem>
<para> <para>
Improve performance of <acronym>WAL</acronym> writes when multiple Improve performance of <acronym>WAL</acronym> writes using group
transactions commit at the same time (Peter Geoghegan, Simon Riggs, commit (Peter Geoghegan, Simon Riggs, Heikki Linnakangas)
Heikki Linnakangas) </para>
</listitem>
<listitem>
<para>
Make the visibility map crash-safe (Robert Haas, Noah Misch)
</para>
<para>
This helps vacuum be more efficient, and is necessary for
index-only scans.
</para> </para>
</listitem> </listitem>
@ -608,14 +607,15 @@
<listitem> <listitem>
<para> <para>
Allow the <link linkend="pg-stat-bgwriter-view">bgwriter</link>, Allow the <link linkend="pg-stat-bgwriter-view">bgwriter</link>,
<link linkend="guc-wal-writer-delay">walwriter</link>, and <link <link linkend="guc-wal-writer-delay">walwriter</link>, <link
linkend="monitoring-stats">statistics collector</link> to sleep linkend="monitoring-stats">statistics collector</link>, archiver,
more efficiently during periods of inactivity (Peter Geoghegan, and checkpointer to sleep more efficiently during periods of
Heikki Linnakangas, Tom Lane) inactivity (Peter Geoghegan, Heikki Linnakangas, Tom Lane)
</para> </para>
<para> <para>
This reduces <acronym>CPU</acronym> wake-ups. This reduces <acronym>CPU</acronym> wake-ups, which dramatically
reduces power consumption on idle servers.
</para> </para>
</listitem> </listitem>
@ -2071,7 +2071,8 @@
</para> </para>
<para> <para>
We already supported minor-version-specific <filename>.psqlrc</> <application>psql</> already supported minor-version-specific
<filename>.psqlrc</>
files. files.
</para> </para>
</listitem> </listitem>
@ -2745,7 +2746,7 @@
<para> <para>
Specifically, only lock the old cluster if link mode is used, Specifically, only lock the old cluster if link mode is used,
and do it right after we restore the schema. and do it right after the schema is restored.
</para> </para>
</listitem> </listitem>