From: | Heikki Linnakangas <hlinnakangas(at)vmware(dot)com> |
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To: | Bruce Momjian <bruce(at)momjian(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org> |
Subject: | Re: 9.4 release notes |
Date: | 2014-05-05 06:23:15 |
Message-ID: | 53672E53.80800@vmware.com |
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Lists: | pgsql-hackers |
On 05/04/2014 03:46 PM, Bruce Momjian wrote:
> Auto-resize the catalog cache (Heikki Linnakangas)
>
> This reduces memory consumption for backends accessing only a few
> tables, and improves performance for backend accessing many tables.
Move this to "General performance" section.
> Improve spinlock speed on x86_64 CPUs (test on i386?) (Heikki Linnakangas)
I believe this refers to commit b03d196b. The "test on i386" note can
just be removed. Someone ought to test it on 32-bit i386 to see if the
same change would be beneficial there, but that's a TODO item more than
a release notes item. I doubt anyone's interested to spend time
performance testing spinlocks on 32-bit i386, though, so I think we're
going to just retain the current situation for the next decade.
- Heikki
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