Possibilities to speed up InnoDB INSERTs and UPDATEs
InnoDB Architecture



You may find this intriguing but you can double or triple the speed of InnoDB writes. How ?

Disable the double write buffer (using innodb-doublewrite)

First, add this to my.cnf (my.ini for Windows)

[mysqld]
innodb-doublewrite=0


Then, restart mysql


Linux: service mysql restart
Windows


net stop mysql
net start mysql



WARNING

In the event of a crash, the crash recovery phase of the mysql startup may produce inconsistent data or lost data.

If you are using Linux, you can counteract that threat by setting up Percona XtraDB Cluster (PXC) with two or more nodes. If your main node crashes, then you can manually failover to one of the other nodes. Make sure all nodes in PXC has the double write buffer disabled.

GIVE IT A TRY !!!