Hardware configuration and operating system
Intel x86_64, 4 CPU x 2 Cores , 3.166 GHz, 8GB RAM, and Windows Server 2008.
MySQL / InnoDB configuration
Relevant my.cnf parameters:
max_connections=500
max_connect_errors=50
table_cache=2048
query-cache-size=0
query-cache-type=0
disable-log-bin
transaction_isolation=REPEATABLE-READ
innodb-file-per-table=1
innodb_data_file_path=ibdata1:200M:autoextend
innodb_buffer_pool_size=4G
innodb_additional_mem_pool_size=20M
innodb_log_file_size=650M
innodb_log_files_in_group=2
innodb_log_buffer_size=16M
innodb_support_xa=0
innodb_doublewrite=1
innodb_thread_concurrency=0
innodb_flush_log_at_trx_commit=1
http://blogs.innodb.com/wp/2010/09/mysql-5-5-innodb-performance-improvements-on-windows/