| From: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
|---|---|
| To: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Performance gain from reduction of GROUP BY memory allocations |
| Date: | 2005-08-29 21:13:11 |
| Message-ID: | 1125349992.4010.305.camel@localhost.localdomain |
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| Lists: | pgsql-announce pgsql-hackers |
In PostgreSQL Weekly News, David Fetter wrote:
> Please test the new beta. Some of the new features are at
> http://developer.postgresql.org/docs/postgres/release.html#RELEASE-8-1
I notice that Neil's patch regarding reducing the number of memory
allocations during aggregation operations isn't mentioned. It was
originally discussed in 8.0beta (2-3?) time.
What happened there?
- patch not committed in the end
- committed but not mentioned, as a dropped item
- committed but not mentioned, since part of a larger patch
Seemed like a good performance gain to me...
I *have* tried to find this, but Neil's work on memory allocation has
been extensive... (please take the compliment...).
Best Regards, Simon Riggs
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