my.cnf

wait_timeout versus interactive_timeout

"wait_timeout" is the amount of seconds during inactivity that MySQL will wait before it will close a connection on a non-interactive connection.

"interactive_timeout" is the same, but for interactive mysql shell sessions.

Setting a value too low may cause connections to drop unexpectedly, specifically if you are using persistent connections. Setting a value too high may cause stale connections to remain open, preventing new access to the database.

For wait_timeout, this value should be set as low as possible without affecting availability and performance.

For interactive_timeout, changing this value won't really increase or decrease performance of your application.

mysql if using too much CPU of my VPS.

Can anybody help me?
Basically my app is for an email marketing, so using a while statement its reads from a db (mysam) and make updates

Thank in advance!!

This is the info about my VPS (when typing )
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
Mem: 1206272 kB
OS: CentOS release 5.3 (Final)
Mysql: 5.0.45-log

This is my my.cnf:
[client]
port = 3306
socket = /var/lib/mysql/mysql.sock

###The MySQL server
[mysqld]
set-variable=local-infile=0

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