How to Improve MySQL Import and Export speed

The SQL statement exported by MySQL may be very slow during import. Using several parameters properly during export can greatly speed up the import.

-E uses the multiline INSERT syntax that includes several VALUES lists;
-Max_allowed_packet = maximum size of the cache for communications between the XXX client/server;
-Net_buffer_length = XXX TCP/IP and socket communication buffer size, create a line with the length up to net_buffer_length.
Note: max_allowed_packet and net_buffer_length cannot be greater than the set value of the target database. Otherwise, an error may occur.
 
 
First, determine the parameter value of the target database.
 
Mysql> show variables like 'max _ allowed_packet ';
Mysql> show variables like 'net _ buffer_length ';
Write the mysqldump Command Based on the parameter value, for example:
 
# Mysqldump-uroot-p dbname-e -- max_allowed_packet = 16777216 -- net_buffer_length = 16384> db_name. SQL
OK, now the speed is very fast. Note that the max_allowed_packet and net_buffer_length parameter values of the Import and Export end are set to a greater value.