为什么Mysql命令行导入比PhpMyAdmin慢

Question

I've a mysql dump file, it's size 3.6 MB . First i've tried import it to my remote server with this terminal command

mysql -hHOST -uUSER -p DBNAME < /path/of/backup.sql

It took about 30 minutes (really) .

And then i've tried importing same file via PhpMyAdmin on my remote server, and it took about 1.5 MINUTES . Can you tell me why mysql command is really so slow than PhpMyAdmin. They both uplaoding 3.6 MB file and then executing same amount of SQL queries.

Answer 1

这是网络相关的问题，只需在mysql服务器上移动文件，然后在本地导入，它应该只需要10到15秒：

mysql -uroot -p dbname < /root/backup.sql

Answer 2

The local mysql cli client does not transfer a file of 3.6MB. Instead it transfers every single query inside the file separately. This leads to a much higher network latency, depending on network connection and server setup. It's the difference between streaming a single block of binary data and thousands of blocks adding up to the same volume.