Hello - I'm running MySQL v5.7.32. I have 12 databases running on same instance on an 12-core 64gb server.
When I first started running imports from a PHPBB forum, they imported extremely fast. Now, they are getting slower and are taking almost 1 minute per post whereas it was importing around 50 a second. What can I optimize in my,cnf to improve this performance? Current my.cnf:
# MySQL config file for medium systems.
#
# This is for a system with little memory (32M - 64M) where MySQL plays
# an important part, or systems up to 128M where MySQL is used together with
# other programs (such as a web server)
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.
# The following options will be passed to all MySQL clients
[client]
password = MAMP_root_password_MAMP
#port = 9999
socket = /Applications/MAMP/tmp/mysql/mysql.sock
# Here follows entries for some specific programs
# The MySQL server
[mysqld]
user = root
#port = 9999
socket = /Applications/MAMP/tmp/mysql/mysql.sock
key_buffer_size = 64M
max_allowed_packet = 500M
#innodb_force_recovery = 0
#general_log = 1
#general_log_file = '/Applications/MAMP/logs/mysql_general.log'
#slow_query_log = 1
#slow_query_log_file = '/Applications/MAMP/logs/mysql_slow_query.log'
#long_query_time = 1
log_timestamps = SYSTEM
explicit_defaults_for_timestamp = 1
table_open_cache = 500
max_connections = 300
interactive_timeout = 300
wait_timeout = 300
MAMP_bind-address_MAMP
# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (via the "enable-named-pipe" option) will render mysqld useless!
#
MAMP_skip-networking_MAMP
# Use the next two directives to set a specific charater set and collation.
# See
https://dev.mysql.com/doc/refman/5.7/en/charset-applications.html
# for more information about character sets and collation.
#character-set-server = utf8mb4
#collation-server = utf8mb4_unicode_ci
# The directive skip-character-set-client-handshake tells the server to ignore
# character set "wishes" from clients. Be careful, with this directive.
# As an alternative you could use the directive
# default-character-set=<some_char_set>
# in the [client] and [mysql] sections of this template.
#skip-character-set-client-handshake
# To enable the server for encrypted connections, use these lines:
#ssl_ca=/path/to/some-ca.pem
#ssl_cert=/path/to/some-server-cert.pem
#ssl_key=/path/to/some-server-key.pem
# See
https://dev.mysql.com/doc/refman/5.7/en/creating-ssl-rsa-files.html
# for more information
# To specify in addition that clients are required to use encrypted connections,
# enable the require_secure_transport system variable.
#require_secure_transport=ON
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Set it to a directory to allow importing and exporting data only from that directory.
# If secure-file-priv is set to NULL operations related to importing and exporting data are disabled.
# Setting secure-file-priv to "" is insecure.
secure_file_priv=""
# lower_case_table_names are automatically set to 2 if the file system for /Library/Application Support/appsolute/MAMP PRO/db/mysql57/ is case insensitive.
#lower_case_table_names=2
# Replication Master Server (default)
# binary logging is required for replication
#log-bin=mysql-bin
# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id = 1
# Replication Slave (comment out master section to use this)
#
# To configure this host as a replication slave, you can choose between
# two methods :
#
# 1) Use the CHANGE MASTER TO command (fully described in our manual) -
# the syntax is:
#
# CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
# MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
#
# where you replace <host>, <user>, <password> by quoted strings and
# <port> by the master's port number (3306 by default).
#
# Example:
#
# CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
# MASTER_USER='joe', MASTER_PASSWORD='secret';
#
# OR
#
# 2) Set the variables below. However, in case you choose this method, then
# start replication for the first time (even unsuccessfully, for example
# if you mistyped the password in master-password and the slave fails to
# connect), the slave will create a master.info file, and any later
# change in this file to the variables' values below will be ignored and
# overridden by the content of the master.info file, unless you shutdown
# the slave server, delete master.info and restart the slaver server.
# For that reason, you may want to leave the lines below untouched
# (commented) and instead use CHANGE MASTER TO (see above)
#
# required unique id between 2 and 2^32 - 1
# (and different from the master)
# defaults to 2 if master-host is set
# but will not function as a slave if omitted
#server-id = 2
#
# The replication master for this slave - required
#master-host = <hostname>
#
# The username the slave will use for authentication when connecting
# to the master - required
#master-user = <username>
#
# The password the slave will authenticate with when connecting to
# the master - required
#master-password = <password>
#
# The port the master is listening on.
# optional - defaults to 3306
#master-port = <port>
#
# binary logging - not required for slaves, but recommended
#log-bin=mysql-bin
# Point the following paths to different dedicated disks
#tmpdir = /tmp/
#log-update = /path-to-dedicated-directory/hostname
# Uncomment the following if you are using BDB tables
#bdb_cache_size = 4M
#bdb_max_lock = 10000
#innodb_data_home_dir = "/Library/Application Support/appsolute/MAMP PRO/db/mysql57"
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = "/Library/Application Support/appsolute/MAMP PRO/db/mysql57"
# Set to the amount of RAM for the most important data cache in MySQL.
# Start at 70% of total RAM for a dedicated server, else 10%.
#innodb_buffer_pool_size = 32G
#innodb_log_file_size = 5M
#innodb_log_buffer_size = 16M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50
# log_bin is a very important data integrity option: logging
# changes to the binary log between backups.
#log_bin
innodb_buffer_pool_instances = 8
innodb_flush_method = O_DIRECT
sync_binlog = 0
# Remove leading # to set the next 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
# see
https://dev.mysql.com/doc/refman/5.7/en/forcing-innodb-recovery.html for more information
#innodb_force_recovery = 2
[mysqldump]
password = MAMP_root_password_MAMP
quick
max_allowed_packet = 128M
[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates
[isamchk]
key_buffer = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M
[myisamchk]
key_buffer = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M
myisam_sort_buffer_size = 8M
[mysqlhotcopy]
interactive-timeout
# DONT REMOVE: MAMP PRO my57.cnf template compatibility version: 19