More than likely, the OS file system is caching the files that make up the tables.
Regards, Jerry Schwartz Global Information Incorporated 195 Farmington Ave. Farmington, CT 06032 860.674.8796 / FAX: 860.674.8341 -----Original Message----- From: Ratheesh K J [mailto:[EMAIL PROTECTED] Sent: Wednesday, August 23, 2006 7:02 AM To: mysql@lists.mysql.com Subject: Query takes different times for execution... Hello all, I wanted to know why a select query takes ,say, 18 sec to execute the first time I execute it and then for every successive execution it takes, say, 10 sec. I have disabled Query Caching on the server. If its not Query Caching then what else is causing this variation in exec time? 1) Also i would like to know something about table caching (what exactly gets cached here?) and its advantages 2) What is an optimal join order. Should it be a smaller result joined with a bigger one or vice-versa, Or how does MySQL do it? Thanks, Ratheesh Bhat K J -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
