Skip site navigation (1) Skip section navigation (2)

Re: Probable faq: need some benchmarks of pgsql vr.s mysql

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: MARK CALLAGHAN <mdcallag(at)gmail(dot)com>
Cc: pgsql-advocacy(at)postgresql(dot)org
Subject: Re: Probable faq: need some benchmarks of pgsql vr.s mysql
Date: 2010-11-17 23:52:07
Message-ID: 4CE46AA7.2040309@agliodbs.com (view raw or flat)
Thread:
Lists: pgsql-advocacy
> There is an IO completion callback that is called when the read into
> the buffer pool is finished. AFAIK, the callback will merge the
> pending changes from the insert buffer. Oh, and the name of the insert
> buffer has been changed to "change buffer" as it can buffer inserts
> and deletes in MySQL 5.5. Also note that there are no updates for
> secondary indexes. There is only insert and delete marking.

Seems like it still needs work.  I'm not entirely convinced that an
index buffer would be a net win for PostgreSQL, given the different
structure of our storage.  I'd look at those "fractal indexes" first.

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

In response to

pgsql-advocacy by date

Next:From: Ken.RosensteelDate: 2010-11-18 17:12:04
Subject: Re: Postgres References
Previous:From: MARK CALLAGHANDate: 2010-11-17 20:24:01
Subject: Re: Probable faq: need some benchmarks of pgsql vr.s mysql

Privacy Policy | About PostgreSQL
Copyright © 1996-2014 The PostgreSQL Global Development Group