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Is there a tool to speed up MySQL dumps?
This tool dumps MySQL tables in parallel. It is a much smarter mysqldump that can either act as a wrapper for mysqldump (with sensible default behavior) or as a wrapper around SELECT INTO OUTFILE. It is designed for high-performance applications on very large data sizes, where speed matters a lot.
How can I optimize a mysqldump of a large database?
Save the mysqldumps in dated folders and rotate out old backup folders. Load whole instance mysqldumps into standalone servers. Only Option 1 brings everything. The drawback is that mysqldumps created this way can only be reloaded into the same majot release version of mysql that the mysqldump was generated.
Why does MySQL dump all rows into memory?
By default, mysqldump reads all rows from a table into memory before writing the output; for large tables, this requires large amounts of memory, possibly causing the dump to fail. Share Improve this answer
How can I speed up the speed of my database?
You can speed this up in a number of ways: Make sure your output is going to a different drive (s) than the one (s) the database files are stored on – this will make a massive difference with spinning disks as the drive heads will not be constantly flicking between the location being read from and the location being written to.
How to tune MySQL for bulk logical backups?
There is no general advice for tuning a MySQL database for a bulk logical backup load, and any parameter should be verified with a test on your hardware and database. In this article, we will explore some variables that help that process. To illustrate the tuning procedure, I’ve downloaded IMDB CSV files and created a MySQL database with pyimdb.
How long does it take to get data back from MySQL?
Unfortunately, the restore speed for logical backups is usually bad, and for a big database, it could require days or even weeks to get data back. Thus it’s important to tune backups and MySQL for the fastest data restore and change settings back before production operations.
Which is faster to backup MySQL or MyISAM?
Another alternative is http://www.mydumper.org – multi-threaded mysql backup/restore which is 3x to 10x times faster than mysqldump and can handle both MyISAM and InnoDB as well as Drizzle http://vbtechsupport.com/1695/
How to measure the speed of MySQL reload?
Here is how you can measure it: Keep running this report until PercentageDirty reaches close to 1.00. Perhaps you could just set innodb_max_dirty_pages_pct to 0 one hour before the dump. If you do not change innodb_max_dirty_pages_pct, a mysqldump will forec a flush of dorty blocks involving the table you are dumping.
What are the problems with reloading a MySQL?
If you are exceeding the 4:1 ratio for reloading a mysqldump, you definitely have one of two problems: