Remove system column pg_class.reltoastidxid (Michael Paquier)

Instead use normal index access methods.

Improve SSL renegotiation handling (Álvaro Herrera)

</listitem>

<listitem>

During immediate shutdown, send uncatchable termination signals to child processes that have not already shutdown (MauMau,

&Aacute;lvaro Herrera)

This reduces the likelihood of orphaned child processes after postmaster shutdown.

Improve randomness of the database system identifier (Tom Lane)

Allow background workers to be dynamically started and terminated (Robert Haas)

worker_spi_launch() in worker_spi shows an example if its use.

Allow dynamic allocation of shared memory segments (Robert Haas, Amit Kapila)

This avoids later freezing overhead.

Improve speed of accessing many sequence values (David Rowley)

Use memory barriers to avoid some spinlock use (Heikki Linnakangas)

Add huge_pages configuration parameter to attempt to use huge translation look-aside buffer (TLB) pages on Linux (Christian Kruse,

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<para>

Add configuration variable data_checksums to report whether data page checksums are enabled (Bernd Helmle)

</para>

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<para>

Use the last specified recovery_target if multiple are specified (Heikki Linnakangas)

</para>

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Description? Logical only?

Improve return codes from external recovery commands (Peter Eisentraut)

Write WAL records of running transactions every 15 seconds ? (Andres Freund)

<title>Logical Change-Set Encoding</title>

Allow security barrier views automatically updateable (Dean Rasheed)

Add structured (non-text) data type (jsonb) for storing JSON data (Oleg Bartunov, Teodor Sigaev, Peter Geoghegan and Andrew Dunstan)

This data type allows faster indexing and access to json keys/value pairs.

Add functions pg_filenode_relation() and pg_relation_filepath() to do relation/relfilenode conversions (Andres Freund)

</para>

<para>

These use a new pg_class index to speed lookups.

Improve the way tuples are frozen, to preserve forensic information ((Robert Haas, Andres Freund)

Code that inspects tuple flag bits will need to be modified

</para>

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<para>

Auto-resize the catalog cache (Heikki Linnakangas)

</para>

<para>

This reduces memory consumption for backends accessing only a few tables, and improves performance for backend accessing many

tables.

All existing uses have been switched to more appropriate snapshot types.

Use an MVCC snapshot (rather than SnapshotNow) for catalog scans (Robert Haas)

Use printf() modifier "z" to specify size_t values (Andres Freund)

Memory barrier changes?

Improve spinlock speed on x86_64 CPUs (test on i386?) (Heikki Linnakangas)

Remove spinlock support for unsupported platforms SINIX, Sun3, and NS32K (Robert Haas)

Rewrite duplicate_oids Unix hell script in Perl (Andrew Dunstan)

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<para>

Remove IRIX port (Robert Haas)

</para>

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