On Sun, Apr 21, 2013 at 03:22:38PM +0200, Andres Freund wrote:
> * Use a binary heap for Merge-Append operations (Abhijit Menon-Sen)
> Implement a generic binary heap and use it for Merge-Append operations
> which previously used a ad-hoc version.
OK, text updated to:
Implement a generic binary heap and use it for Merge-Append
operations (Abhijit Menon-Sen)
> * Dramatically reduce System V shared memory usage (Robert Haas)
> s/eleminates/reduces/ in "This eliminates the requirement of increasing
> System V shared memory kernel parameters.". There are still quite some
> usecases where some of those need to be touched.
Well, you still might need to increase the number of semaphors, but not
shared memory.
> * Improve performance of streaming replication log shipping
> ... with synchronous_commit = off
New text is, based on Simon's request about adding failover speedup:
Improve performance of streaming replication log shipping and
standby promotion (Andres Freund, Simon Riggs)
It is worth breaking those out into two items?
> * Store WAL in a continuous stream, rather than skipping the last 16MB
> segment every 4GB (Heikki Linnakangas)
> Should be marked as a potential backward compatibility break, some tools
> might need to adapt their logic.
OK, added a marker about that.
>
> * Add IF NOT EXISTS clause to CREATE SCHEMA (FabrÃzio de Royes Mello)
> another broken name :(
Fixed (found mention in 9.2 release notes with SGML entities).
> * Add pg_dump --jobs to dump in parallel (Joachim Wieland)
>
> Should we mention that this is only working for directory mode dumps?
> Some users might be a bit confused otherwise.
Yes, added mention.
> * Add infrastructure to better support plug-in background worker processes
> (Álvaro Herrera)
> ... configurable via shared_preload_libraries
I am going to link to our docs so they can see such details.
> * Split out WAL reading as an independent facility
> Should mention Heikki as primary author instead of me.
Done.
Changes applied.
--
Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +
