Re: High end server and storage for a PostgreSQL OLTP system - Mailing list pgsql-performance

From Tom Lane
Subject Re: High end server and storage for a PostgreSQL OLTP system
Date
Msg-id 3253.1109628922@sss.pgh.pa.us
Whole thread Raw
In response to Re: High end server and storage for a PostgreSQL OLTP system  (Cosimo Streppone <cosimo@streppone.it>)
List pgsql-performance
Cosimo Streppone <cosimo@streppone.it> writes:
> The performance level of Pg 8 is at least *five* times higher
> (faster!) than 7.1.3 in "query-intensive" transactions,
> which is absolutely astounding.

Cool.

> In my experience, Pg8 handles far better non-unique indexes
> with low cardinality built on numeric and integer types, which
> is very common in our application.

Yes, we've fixed a number of places where the btree code was inefficient
with large numbers of equal keys.  I'm not sure that that explains a
5x speedup all by itself, though.

            regards, tom lane

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