I compared the performance of MySQL 5.6.11 versus 4.0.30 using a read-only workload with sysbench. Performance was much better for 5.6.11 in most cases. At low-concurrency MySQL 4.0 was a bit faster. MySQL 5.6.11 was faster at high-concurrency and when doing many page reads per second. The product has improved a lot since I started using MySQL. I followed most of my advice on building and configur
![MySQL 5.6 versus 4.0 for a read-only workload](https://cdn-ak-scissors.b.st-hatena.com/image/square/94035b58455a8ef508fb687bf68964e31d389b22/height=288;version=1;width=512/http%3A%2F%2F4.bp.blogspot.com%2F-gQPxIzaG9RI%2FUYlZyh2jeQI%2FAAAAAAAAAZY%2FbihHmSjbqco%2Fw1200-h630-p-k-no-nu%2Fchart_1.png)