MySQL Benchmarks – MySQL 5.0.92 vs 5.1.55 vs 5.5.10 vs Percona 5.1.55 vs Percona 5.5.8 vs MariaDB 5.2.5 | vbtechsupport.com

Sysbench-based benchmark comparing OLTP workloads for different builds and forks of MySQL on 64-core intel machine (Quad Intel Xeon L7555 ) . Only one definitive result is that MySQL cannot scale beyond 8 or 16 cores, or in some cases beyond just 2 cores (booo! ). In all cases performance went down when more than 24 cores were used .

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