How can I speed up a MySQL retore from a dump file?

Posted by Dave Forgac on Server Fault See other posts from Server Fault or by Dave Forgac
Published on 2010-05-29T15:37:49Z Indexed on 2010/05/29 15:42 UTC
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mysql

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mysqldump

I am restoring a 30GB database from a mysqldump file to an empty database on a new server. When running the SQL from the dump file, the restore starts very quickly and then starts to get slower and slower. Individual inserts are now taking 15+ seconds. The tables are MyISAM. The server has no other active connections. SHOW PROCESSLIST; only shows the insert from the restore (and the show processlist itself).

Does anyone have any ideas what could be causing the dramatic slowdown?

Are there any MySQL variables that I can change to speed the restore while it is progressing?

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