diff options
Diffstat (limited to 'doc/src/sgml')
| -rw-r--r-- | doc/src/sgml/release.sgml | 73 |
1 files changed, 39 insertions, 34 deletions
diff --git a/doc/src/sgml/release.sgml b/doc/src/sgml/release.sgml index 82379332fab..5e5464511b5 100644 --- a/doc/src/sgml/release.sgml +++ b/doc/src/sgml/release.sgml @@ -1,4 +1,4 @@ -<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.525 2007/10/18 16:47:58 momjian Exp $ --> +<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.526 2007/10/18 23:05:06 momjian Exp $ --> <!-- Typical markup: @@ -66,8 +66,8 @@ do it for earlier branch release files. <listitem> <para> - Support for the SQL/XML standard, including new operators and a - new <type>XML</type> builtin type + Support for the SQL/XML standard, including new operators and + an <type>XML</type> data type </para> </listitem> @@ -79,8 +79,7 @@ do it for earlier branch release files. <listitem> <para> - Universally Unique Identifier (<type>UUID</>) data type, similar - to that defined by RFC 4122 + Universally Unique Identifier (<type>UUID</>) data type </para> </listitem> @@ -171,28 +170,27 @@ do it for earlier branch release files. <listitem> <para> - <quote>Distributed</> checkpoints prevent I/O spikes during - checkpoints + Distributed checkpoints prevent I/O spikes during checkpoints </para> </listitem> <listitem> <para> - Heap-Only Tuples (<acronym>HOT</>) improves <command>UPDATE</> - space usage + Heap-Only Tuples (<acronym>HOT</>) accelerate <command>UPDATE</> + space reuse </para> </listitem> <listitem> <para> - Just-in-time background writer strategy to improve disk write + Just-in-time background writer strategy improves disk write efficiency </para> </listitem> <listitem> <para> - Reduction of both per-field and per-row storage requirements + Reduction of per-field and per-row storage requirements </para> </listitem> @@ -218,7 +216,8 @@ do it for earlier branch release files. <listitem> <para> - Use pseudo-transaction ids in read-only transactions + Reduce need for vacuum by using pseudo-transaction ids in + read-only transactions </para> </listitem> @@ -507,7 +506,7 @@ do it for earlier branch release files. <listitem> <para> - <quote>Distributed</> checkpoints prevent I/O spikes during + Distributed checkpoints prevent I/O spikes during checkpoints (Itagaki Takahiro and Heikki Linnakangas) </para> @@ -522,8 +521,8 @@ do it for earlier branch release files. <listitem> <para> - Heap-Only Tuples (<acronym>HOT</>) improves <command>UPDATE</> - space usage (Pavan Deolasee, with ideas from many others) + Heap-Only Tuples (<acronym>HOT</>) accelerate <command>UPDATE</> + space reuse (Pavan Deolasee, with ideas from many others) </para> <para> @@ -540,7 +539,7 @@ do it for earlier branch release files. <listitem> <para> - Just-in-time background writer strategy to improve disk write + Just-in-time background writer strategy improves disk write efficiency (Greg Smith, Itagaki Takahiro) </para> @@ -551,8 +550,8 @@ do it for earlier branch release files. <listitem> <para> - Reduction of both per-field and per-row storage requirements - (Greg Stark) + Reduction of per-field and per-row storage requirements (Greg + Stark) </para> <para> @@ -565,21 +564,23 @@ do it for earlier branch release files. <listitem> <para> - Use pseudo-transaction ids in read-only transactions (Florian Pflug) + Reduce need for vacuum by using pseudo-transaction ids in + read-only transactions (Florian Pflug) </para> <para> - This reduces transaction overhead for read-only transactions, - and reduces the necessity of vacuuming for transaction id - wrap-around. Other transaction performance improvements were - also made that should improve concurrency. + Pseudo-transaction ids do not increment the global transaction + counter. Therefore, they do not add to the need for vacuum to + read all database rows to prevent problems with transaction id + wrap-around. Other transaction performance improvements were also + made that should improve concurrency. </para> </listitem> <listitem> <para> Create a dedicated <acronym>WAL</> writer process to off-load - WAL-writing work from backends (Simon) + work from backends (Simon) </para> </listitem> @@ -621,12 +622,6 @@ do it for earlier branch release files. <listitem> <para> - Reduce overhead of populating the statistics tables. (Tom) - </para> - </listitem> - - <listitem> - <para> Allow <literal>ORDER BY ... LIMIT</> to be done without sorting (Greg Stark) </para> @@ -639,6 +634,12 @@ do it for earlier branch release files. <listitem> <para> + Reduce overhead of populating the statistics tables (Tom) + </para> + </listitem> + + <listitem> + <para> Improve hash join performance for cases with many NULLs (Tom) </para> </listitem> @@ -1327,8 +1328,8 @@ do it for earlier branch release files. <listitem> <para> - Support for the SQL/XML standard, including new operators and a - new <type>XML</type> builtin type (Nikolay Samokhvalov, Peter) + Support for the SQL/XML standard, including new operators and an + <type>XML</type> data type (Nikolay Samokhvalov, Peter) </para> </listitem> @@ -1346,8 +1347,12 @@ do it for earlier branch release files. <listitem> <para> - Universally Unique Identifier (<type>UUID</>) data type, similar - to that defined by RFC 4122 (Gevik Babakhani, Neil) + Universally Unique Identifier (<type>UUID</>) data type (Gevik + Babakhani, Neil) + </para> + + <para> + This closely matches <acronym>RFC</> 4122. </para> </listitem> |