Large Process & How to measure time per process

hello all, i'm using the mysql and apache for a matching price and bid transaction and planned to process high volume transaction i've already set the mysql for max_connection and the apache for max connection so it could receive a lot of connections but there one problem i've been thinking about the capacity of PHP to process long queries, i've noticed the timeout limit in PHP, and i have these questions: 1. if PHP script processing the queries exceed the timeout value how will it stop? (show error message, roll back process or ....) And should setting the timeout time larger will solve the problem? 2. How do i measure how long does the script process time? (any software or scripts?) 3. How do i measure the memory used by this process? -- Chenri J Taman Palem Lestari B18 - 19A (021) 926 68651 - Esia jadi bisa SMS