Horton

Re: better atomics - v0.5

Josh Berkus <josh@agliodbs.com>

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From: Josh Berkus <josh@agliodbs.com>
To: Andres Freund <andres@2ndquadrant.com>, Robert Haas <robertmhaas@gmail.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, Peter Geoghegan <pg@heroku.com>, Pg Hackers <pgsql-hackers@postgresql.org>, Ants Aasma <ants@cybertec.at>
Date: 2014-06-25T17:39:53Z
Lists: pgsql-hackers 
On 06/25/2014 10:14 AM, Andres Freund wrote:
> Hi,
> 
> [sorry for the second copy Robert]
> 
> Attached is a new version of the atomic operations patch. Lots has
> changed since the last post:

Is this at a state where we can performance-test it yet?

-- 
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com

Commits

  1. Avoid the use of a separate spinlock to protect a LWLock's wait queue.

  2. Improve LWLock scalability.

  3. Reduce the number of semaphores used under --disable-spinlocks.

  4. Alter the configure script to fail immediately if the C compiler does not