Re: 9.4 release notes

From: Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>
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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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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