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쿼리 튜닝이 구체적으로 어떤건지 궁금합니다.
제가 쿼리 튜닝 하라는 소리를 들어서요.. ㅎ;
쿼리 튜닝하면 효과 있을꺼라고 하더라구요..
문제점은 바로 이겁니다.
# Time: 050522 18:41:34
# User@Host:
fishlover[fishlover] @ localhost.nameip.net [127.0.0.1]
# Query_time: 63 Lock_time: 0 Rows_sent: 0 Rows_examined:
0
ALTER TABLE BNET ADD COLUMN auth_admin_ch_gaon VARCHAR(128);
한 4만개정도의 줄이 있구요
칸도 좀 많습니다. (줄 칸의 정확한 명칭을 잘 몰라서..)
한칸 늘리는 쿼리가 이렇게 많이 걸려서.. 쿼리 튜닝을 해보라고
하더라구요..
my.cnf 파일도 올려야 할꺼 같아서 첨부하겠습니다.
서버 사양은
셀 600, 램 256 , FreeBSD, MySql 4.0.19 입니다.
# Example 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)
#
# You can copy this file to
# /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options (in
this
# installation this directory is /var/db/mysql) or
# ~/.my.cnf to set user-specific options.
#
# 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 = your_password
port = 3306
socket = /tmp/mysql.sock
# Here follows entries for some specific programs
# The MySQL server
[mysqld]
port = 3306
socket = /tmp/mysql.sock
skip-locking
key_buffer = 16M
max_allowed_packet = 2M
table_cache = 128
sort_buffer_size = 1M
net_buffer_length = 16K
myisam_sort_buffer_size = 16M
log_slow_queries = ON
log-slow-queries = /fbs/slow-query.log
long_query_time = 1
thread_cache = 8
query_cache_size= 16M
# Try number of CPU's*2 for thread_concurrency
thread_concurrency = 1
# 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!
#
#skip-networking
# Replication Master Server (default)
# binary logging is required for replication
log-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
# 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
# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /var/db/mysql/
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = /var/db/mysql/
#innodb_log_arch_dir = /var/db/mysql/
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
#innodb_buffer_pool_size = 16M
#innodb_additional_mem_pool_size = 2M
# Set .._log_file_size to 25 % of buffer pool size
#innodb_log_file_size = 5M
#innodb_log_buffer_size = 8M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50
[mysqldump]
quick
max_allowed_packet = 16M
[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
[mysqlhotcopy]
interactive-timeout
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