mysql 5.6与5.7内存参数优化内存占用为30MB左右

performance_schema_max_table_instances = 200

table_definition_cache = 100

table_open_cache = 100。

innodb_buffer_pool_size=2M

# For advice on how to change settings please see

# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html

[mysqld]

#

# Remove leading # and set to the amount of RAM for the most important data

# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.

# innodb_buffer_pool_size = 128M

#

# Remove leading # to turn on a very important data integrity option: logging

# changes to the binary log between backups.

# log_bin

#

# Remove leading # to set options mainly useful for reporting servers.

# The server defaults are faster for transactions and fast SELECTs.

# Adjust sizes as needed, experiment to find the optimal values.

# join_buffer_size = 128M

# sort_buffer_size = 2M

# read_rnd_buffer_size = 2M

datadir=/var/lib/mysql

socket=/var/lib/mysql/mysql.sock

#symbolic-links=0

skip-external-locking

key_buffer_size = 8M

max_allowed_packet = 1M

table_open_cache = 4

sort_buffer_size = 64K

read_buffer_size = 256K

read_rnd_buffer_size = 256K

net_buffer_length = 2K

thread_stack = 240K

#innodb_use_native_aio = 0

innodb_buffer_pool_size=2M

performance_schema_max_table_instances=50

table_definition_cache=50

table_open_cache=32

max_connections=50

max_user_connections=35

wait_timeout=10

interactive_timeout=15

long_query_time=5

# Disabling symbolic-links is recommended to prevent assorted security risks

symbolic-links=0

# Recommended in standard MySQL setup

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

[mysqld_safe]

log-error=/var/log/mysqld.log

pid-file=/var/run/mysqld/mysqld.pid

performance_schema_max_table_instances 12500

table_definition_cache 1400

table_open_cache 2000