key_buffer_size query_cache_size table_cache 。

key_buffer_size – 128M  key_read_requests – 650759289  key_reads - 79112 。

Qcache inserts  Qcache hits  Qcache lowmem prunes  Qcache free blocks  Qcache total blocks 。

query_cache_size = 32M  query_cache_type= 1 。

Qcache queries in cache 12737 表明目前缓存的条数  Qcache inserts 20649006  Qcache hits 79060095 　看来重复查询率还挺高的  Qcache lowmem prunes 617913　有这么多次出现缓存过低的情况  Qcache not cached 189896 　　  Qcache free memory 18573912　　目前剩余缓存空间  Qcache free blocks 5328 这个数字似乎有点大　碎片不少  Qcache total blocks 30953 。

Open tables 256  Opened tables 9046 。

sort_buffer_size = 1M  max_connections=120  wait_timeout =120  back_log=100  read_buffer_size = 1M  thread_cache=32  interactive_timeout=120  thread_concurrency = 4 。

# 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/lib/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  #socket = /var/lib/mysql/mysql.sock  # Here follows entries for some specific programs  # The MySQL server  [mysqld]  port = 3306  socket = /tmp/mysql.sock  #socket = /var/lib/mysql/mysql.sock  skip-locking  key_buffer = 128M  max_allowed_packet = 1M  table_cache = 256  sort_buffer_size = 1M  net_buffer_length = 16K  myisam_sort_buffer_size = 1M  max_connections=120  #addnew config  wait_timeout =120  back_log=100  read_buffer_size = 1M  thread_cache=32  skip-innodb  skip-bdb  skip-name-resolve  join_buffer_size=512k  query_cache_size = 32M  interactive_timeout=120  long_query_time=10  log_slow_queries= /usr/local/mysql4/logs/slow_query.log  query_cache_type= 1  # Try number of CPU's*2 for thread_concurrency  thread_concurrency = 4  #end new config  # 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=, MASTER_PORT=,  # MASTER_USER=, MASTER_PASSWORD= ;  #  # where you replace , , by quoted strings and  # 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 =  #  # The username the slave will use for authentication when connecting  # to the master - required  #master-user =  #  # The password the slave will authenticate with when connecting to  # the master - required  #master-password =  #  # The port the master is listening on.  # optional - defaults to 3306  #master-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/lib/mysql/  #innodb_data_file_path = ibdata1:10M:autoextend  #innodb_log_group_home_dir = /var/lib/mysql/  #innodb_log_arch_dir = /var/lib/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 。