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my.ini for mySQL
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# MySQL Server Instance Configuration File | |
# ---------------------------------------------------------------------- | |
# Generated by the MySQL Server Instance Configuration Wizard | |
# | |
# | |
# Installation Instructions | |
# ---------------------------------------------------------------------- | |
# | |
# On Linux you can copy this file to /etc/my.cnf to set global options, | |
# mysql-data-dir/my.cnf to set server-specific options | |
# (@localstatedir@ for this installation) or to | |
# ~/.my.cnf to set user-specific options. | |
# | |
# On Windows you should keep this file in the installation directory | |
# of your server (e.g. C:\Program Files\MySQL\MySQL Server X.Y). To | |
# make sure the server reads the config file use the startup option | |
# "--defaults-file". | |
# | |
# To run run the server from the command line, execute this in a | |
# command line shell, e.g. | |
# mysqld --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini" | |
# | |
# To install the server as a Windows service manually, execute this in a | |
# command line shell, e.g. | |
# mysqld --install MySQLXY --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini" | |
# | |
# And then execute this in a command line shell to start the server, e.g. | |
# net start MySQLXY | |
# | |
# | |
# Guildlines for editing this file | |
# ---------------------------------------------------------------------- | |
# | |
# In this file, you can use all long options that the program supports. | |
# If you want to know the options a program supports, start the program | |
# with the "--help" option. | |
# | |
# More detailed information about the individual options can also be | |
# found in the manual. | |
# | |
# | |
# CLIENT SECTION | |
# ---------------------------------------------------------------------- | |
# | |
# The following options will be read by MySQL client applications. | |
# Note that only client applications shipped by MySQL are guaranteed | |
# to read this section. If you want your own MySQL client program to | |
# honor these values, you need to specify it as an option during the | |
# MySQL client library initialization. | |
# | |
[client] | |
port=3306 | |
[mysql] | |
default-character-set=utf8 | |
# SERVER SECTION | |
# ---------------------------------------------------------------------- | |
# | |
# The following options will be read by the MySQL Server. Make sure that | |
# you have installed the server correctly (see above) so it reads this | |
# file. | |
# | |
[mysqld] | |
#skip-innodb | |
# The TCP/IP Port the MySQL Server will listen on | |
port=3306 | |
max_allowed_packet=16M | |
#Path to installation directory. All paths are usually resolved relative to this. | |
#basedir="C:/Program Files/MySQL/MySQL Server 5.1/" | |
basedir="C:/MySQL/" | |
#Path to the database root | |
#datadir="C:/Documents and Settings/All Users/Application Data/MySQL/MySQL Server 5.1/Data/" | |
datadir="C:/MySQLData/" | |
# The default character set that will be used when a new schema or table is | |
# created and no character set is defined | |
default-character-set=utf8 | |
# The default storage engine that will be used when create new tables when | |
default-storage-engine=INNODB | |
# Set the SQL mode to strict | |
sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION" | |
# The maximum amount of concurrent sessions the MySQL server will | |
# allow. One of these connections will be reserved for a user with | |
# SUPER privileges to allow the administrator to login even if the | |
# connection limit has been reached. | |
max_connections=1000 | |
# Query cache is used to cache SELECT results and later return them | |
# without actual executing the same query once again. Having the query | |
# cache enabled may result in significant speed improvements, if your | |
# have a lot of identical queries and rarely changing tables. See the | |
# "Qcache_lowmem_prunes" status variable to check if the current value | |
# is high enough for your load. | |
# Note: In case your tables change very often or if your queries are | |
# textually different every time, the query cache may result in a | |
# slowdown instead of a performance improvement. | |
query_cache_type = 1 | |
query_cache_size=256M | |
thread_concurrency = 8 | |
query_cache_limit = 768M | |
# The number of open tables for all threads. Increasing this value | |
# increases the number of file descriptors that mysqld requires. | |
# Therefore you have to make sure to set the amount of open files | |
# allowed to at least 4096 in the variable "open-files-limit" in | |
# section [mysqld_safe] | |
table_cache=1024 | |
# Maximum size for internal (in-memory) temporary tables. If a table | |
# grows larger than this value, it is automatically converted to disk | |
# based table This limitation is for a single table. There can be many | |
# of them. | |
tmp_table_size=128M | |
# How many threads we should keep in a cache for reuse. When a client | |
# disconnects, the client's threads are put in the cache if there aren't | |
# more than thread_cache_size threads from before. This greatly reduces | |
# the amount of thread creations needed if you have a lot of new | |
# connections. (Normally this doesn't give a notable performance | |
# improvement if you have a good thread implementation.) | |
thread_cache_size=256 | |
#*** MyISAM Specific options | |
# The maximum size of the temporary file MySQL is allowed to use while | |
# recreating the index (during REPAIR, ALTER TABLE or LOAD DATA INFILE. | |
# If the file-size would be bigger than this, the index will be created | |
# through the key cache (which is slower). | |
myisam_max_sort_file_size=100G | |
# If the temporary file used for fast index creation would be bigger | |
# than using the key cache by the amount specified here, then prefer the | |
# key cache method. This is mainly used to force long character keys in | |
# large tables to use the slower key cache method to create the index. | |
myisam_sort_buffer_size=256M | |
# Size of the Key Buffer, used to cache index blocks for MyISAM tables. | |
# Do not set it larger than 30% of your available memory, as some memory | |
# is also required by the OS to cache rows. Even if you're not using | |
# MyISAM tables, you should still set it to 8-64M as it will also be | |
# used for internal temporary disk tables. | |
key_buffer_size=512M | |
# Size of the buffer used for doing full table scans of MyISAM tables. | |
# Allocated per thread, if a full scan is needed. | |
read_buffer_size=64K | |
read_rnd_buffer_size=256K | |
# This buffer is allocated when MySQL needs to rebuild the index in | |
# REPAIR, OPTIMZE, ALTER table statements as well as in LOAD DATA INFILE | |
# into an empty table. It is allocated per thread so be careful with | |
# large settings. | |
sort_buffer_size=2M | |
#*** INNODB Specific options *** | |
# Use this option if you have a MySQL server with InnoDB support enabled | |
# but you do not plan to use it. This will save memory and disk space | |
# and speed up some things. | |
#skip-innodb | |
# Additional memory pool that is used by InnoDB to store metadata | |
# information. If InnoDB requires more memory for this purpose it will | |
# start to allocate it from the OS. As this is fast enough on most | |
# recent operating systems, you normally do not need to change this | |
# value. SHOW INNODB STATUS will display the current amount used. | |
innodb_additional_mem_pool_size=12M | |
# If set to 1, InnoDB will flush (fsync) the transaction logs to the | |
# disk at each commit, which offers full ACID behavior. If you are | |
# willing to compromise this safety, and you are running small | |
# transactions, you may set this to 0 or 2 to reduce disk I/O to the | |
# logs. Value 0 means that the log is only written to the log file and | |
# the log file flushed to disk approximately once per second. Value 2 | |
# means the log is written to the log file at each commit, but the log | |
# file is only flushed to disk approximately once per second. | |
innodb_flush_log_at_trx_commit=1 | |
# The size of the buffer InnoDB uses for buffering log data. As soon as | |
# it is full, InnoDB will have to flush it to disk. As it is flushed | |
# once per second anyway, it does not make sense to have it very large | |
# (even with long transactions). | |
innodb_log_buffer_size=6M | |
# InnoDB, unlike MyISAM, uses a buffer pool to cache both indexes and | |
# row data. The bigger you set this the less disk I/O is needed to | |
# access data in tables. On a dedicated database server you may set this | |
# parameter up to 80% of the machine physical memory size. Do not set it | |
# too large, though, because competition of the physical memory may | |
# cause paging in the operating system. Note that on 32bit systems you | |
# might be limited to 2-3.5G of user level memory per process, so do not | |
# set it too high. | |
innodb_buffer_pool_size=550M | |
# Size of each log file in a log group. You should set the combined size | |
# of log files to about 25%-100% of your buffer pool size to avoid | |
# unneeded buffer pool flush activity on log file overwrite. However, | |
# note that a larger logfile size will increase the time needed for the | |
# recovery process. | |
innodb_log_file_size=110M | |
# Number of threads allowed inside the InnoDB kernel. The optimal value | |
# depends highly on the application, hardware as well as the OS | |
# scheduler properties. A too high value may lead to thread thrashing. | |
innodb_thread_concurrency=10 | |
#This option makes InnoDB to store each created table into its own .ibd file. | |
innodb_file_per_table |
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