You do NOT want to restart MySQL every 60 minutes because if it stops while the database is being written to you will end up with a corrupted db. Why do you want it to restart so much?
my mysql is giving high load when i restart , it turns to normal . so i need how to do it with ssh I wrote 0 * 1 1 1 /etc/rc.d/init.d/mysqld restart to cronjob I hope it work i will test
Probably because he has high load, and hasn't tuned it correctly. Might be able to help with something like this.
I think you need to find the source of the problem rather than to restart MySQL to get the load down. I think you need to find what's causing it in the first place.