Which is faster to dump from MySQL or InnoDB?
Dump with –tab format so you can use mysqlimport, which is faster than mysql < dumpfile. Import with multiple threads, one for each table. Use a different database engine if possible. importing into a heavily transactional engine like innodb is awfully slow. Inserting into a non-transactional engine like MyISAM is much much faster.
Why does MySQL slow down when importing files?
Most of the slowdown is I/O based, but you can still get a 40% improvement by dumping into tables and then importing them say 4 at a time. having the files gzipped before pushing them to mysql doesn’t slow anything down mostly because of the lowered I/O.
How long does it take to import MySQL dump?
I have an SQL dump, it’s pretty big (411 MB) and it took 10 minutes to import on server A, the same import on my workstation B has an estimate (pipeviewer) of 8 hours to import (it imported 31 MB in 40 minutes) So this is factor 53 slower. The mysql/maria config is the stock config.
Why is.sql dump file so slow?
So depending on the tool generating the database dump (or more specifically the format of the INSERT statements), the speed can be influenced. Note: This also decreases the .sql dump file by over 60% in my tests, so it will save on i/o as well.
How to improve import speed of MySQL Stack Overflow?
You can of course do that as well by exporting and then importing your empty schema first. Get more RAM, get a faster processor, get an SSD for faster writes. Batch the inserts so they will run faster than a bunch of individual inserts. It’s a huge file, and will take time.
How long does it take to import a csv table in MySQL?
A new feature introduced in mySQL 8.0.17, the [mySQL Parallel Table Import Utility] [2], takes it to the next level. An import of CSV tables that formerly took about 15 minutes (approx 1 Gb) now takes 5:30, on an Intel Core I7-6820HQ with a SATA SSD.