taking more time to load page

I was running a cron job daily to create records .

I had 300 users and every day i will be creating 20 records for each user. So total - 6000 records daily .(its a daily food item records )

Now when user login and view the page , it was taking more time and deep slow .

So for now i am deleting the records which are 30 days old daily.but this hasnt solved my开发者_开发技巧 issue

Can any tell me how to overcome this and increase performance ?

thanks, sri

Your code can be reformatted with less number of loops.