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 ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend