IO Performance measurement with bonnie++

To have a look at the performance, your storage devices has, bonnie++ is quite well. To write a file of 16 GB and see how fast it is, just do:

sudo yum install bonnie++
cd /<destination>
sudo bonnie++ -s 16000

Top for MySQL

Sometimes it is quite nice to have a quick view inside mysql. MyTop is a top-like tool for mysql. You can use it like this:

sudo yum install mytop
sudo mytop -u<user> -p<passwd> -d<db_name>