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9.2 release note updates from Peter Geoghegan

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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
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47
doc/src/sgml/release-9.2.sgml
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@ -72,8 +72,8 @@
<para>
Users should now use hstore(text, text). Since
<productname>PostgreSQL</productname> 9.0, we have emitted a
warning message when an operator named =&gt; is created because
<productname>PostgreSQL</productname> 9.0, a warning message is
emitted when an operator named =&gt; is created because
the <acronym>SQL</acronym> standard reserves that token for
another use.
</para>
@ -460,17 +460,6 @@
</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>
</listitem>
<listitem>
<para>
Improve GiST box and point index performance by producing better
@ -545,9 +534,19 @@
<listitem>
<para>
Improve performance of <acronym>WAL</acronym> writes when multiple
transactions commit at the same time (Peter Geoghegan, Simon Riggs,
Heikki Linnakangas)
Improve performance of <acronym>WAL</acronym> writes using group
commit (Peter Geoghegan, Simon Riggs, 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>
</listitem>
@ -608,14 +607,15 @@
<listitem>
<para>
Allow the <link linkend="pg-stat-bgwriter-view">bgwriter</link>,
<link linkend="guc-wal-writer-delay">walwriter</link>, and <link
linkend="monitoring-stats">statistics collector</link> to sleep
more efficiently during periods of inactivity (Peter Geoghegan,
Heikki Linnakangas, Tom Lane)
<link linkend="guc-wal-writer-delay">walwriter</link>, <link
linkend="monitoring-stats">statistics collector</link>, archiver,
and checkpointer to sleep more efficiently during periods of
inactivity (Peter Geoghegan, Heikki Linnakangas, Tom Lane)
</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>
</listitem>
@ -2071,7 +2071,8 @@
</para>
<para>
We already supported minor-version-specific <filename>.psqlrc</>
<application>psql</> already supported minor-version-specific
<filename>.psqlrc</>
files.
</para>
</listitem>
@ -2745,7 +2746,7 @@
<para>
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>
</listitem>