Re: prelimiary performance comparison pgsql vs mysql

On Mon, Mar 14, 2005 at 06:52:58AM -0500, Rick Schumeyer wrote:
> Below are some PRELIMINARY results in comparing the performance of pgsql and
> mysql.
> ...
> I have not yet done any testing of transactions, multiple concurrent
> processes, etc.
>

I would say that doing the concurrency tests is probably the most
important factor in comparing other databases against MySQL, as
MySQL will almost always win in single-user tests.

E.g. here are some performance figures from tests I have done in the past.
This is with a 6GB databse on a 4CPU Itanium system running a mixture of
read-only queries, but it is fairly typical of the behaviour I have seen.
The Oracle figures also scaled in a similar way to postgres.

Clients           1     2     3     4     6     8    12    16    32    64   128
-------------------------------------------------------------------------------
mysql-4.1.1    1.00  1.41  1.34  1.16  0.93  1.03  1.01  1.00  0.94  0.86  0.80
pg-7.4.1       0.65  1.27  1.90  2.48  2.45  2.50  2.48  2.51  2.49  2.39  2.38

    -Mark