Any way of “multiplying” MySql records to test a large db on server?

[DJFLOW123]

I have several mysql tables in a database.Currently I am doing finishing test on my website, and one is to test a heavy db to see how much this affects performance (searching).The website is a classifieds website.It would take a very long time for me to insert one classified at a time to reach a significant nr.So I wonder, is there any way of multiplying records in MySql, preferrably with phpMyAdmin?Lets say I already have 20 finished records, and just multiply them several times and I get a large db in no time. Possible?You should know that my tables have foreign keys and other relations...If you need more input let me know...Thanks