On Sun, May 2, 2010 at 11:50 PM, Junior Ortis <jror...@gmail.com> wrote: > Hi guys, i have a server with 20GB InnoDb on a single database and i > use just one user for its. I use mysql 5.4 > > 1- If i change my SCSI 15k RPM to a SSD i will increase my performance ?
Umm, maybe. More information is required. Does the entire dataset float in RAM? Does an IO bottleneck impact performance at all? What sort of SSD? How many drives in either configuration? > 2- What is the fast method to a backup to this InnoDB database ? And > the more easy ? And how i restore its ? 20GB ain't much data. Consider "mysqldump --single-tranaction --master-data > dump.sql ". (You are storing binary logs so that master data is useful, right?) The restore is super simple with "mysql < dump.sql". The answer you may want is "xtrabackup". If you go that route a plain text backup is still a good idea. > 3-I need make a clean on one table, its something like: > > table 1 = 400k rows ( Index field ) > table 2 = 15kk rows ( Index field ) > table 3 = 150k rows ( Index field ) > table 4 = 15kk rows ( Index field ) > > Its like: "delete from table 4 where id NOT IN ( select id from table1 > ) and id NOT IN ( select id from table2 ) id NOT IN ( select id from > table3 ) " > > Have others better methos to make its ? Define better. NOT IN with a sub query is generally a poor performer. In my experience removing 10k rows at a time I have found to be often ideal. > 4- InnoDB have a optimize table ? For re-index or something to make a > better performance http://tinyurl.com/32ysu4s I have lots of boxes and darn near never run optimize table on a innodb table. Exceptions are made for massive bloat when file per table is in use or statistics insanity that survives a analyze table. -- Rob Wultsch wult...@gmail.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=arch...@jab.org
