安装完后发现,top内存量占用都很大,竟然有47.1%内存使用。
我的VPS总共才1G内存,目前只放了个discuz,不需要MySQL那么大的内存。一路优化完后只有7.5%占用率了。
1、关闭innodb使用MYISAM存储引擎
参考:http://docs.oracle.com/cd/E17952 ... db-turning-off.html
2、添加配置(可以先单独尝试这一步,我在不关闭innodb引擎的情况从471M降低到了70M)
performance_schema_max_table_instances=200
table_definition_cache=200
table_open_cache=128
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mysql 重启: /etc/init.d/mysqld restart
/etc/my.cnf配置如下
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/ ... ation-defaults.html
# *** DO NOT EDIT THIS FILE. It's a template which will be copied to the
# *** default location during install, and will be replaced if you
# *** upgrade to a newer version of MySQL.
[mysqld]
performance_schema_max_table_instances=200
table_definition_cache=200
table_open_cache=128
innodb=OFF
default-storage-engine=MYISAM
default-tmp-storage-engine=MYISAM
loose-innodb-trx=0
loose-innodb-locks=0
loose-innodb-lock-wAIts=0
loose-innodb-cmp=0
loose-innodb-cmp-per-index=0
loose-innodb-cmp-per-index-reset=0
loose-innodb-cmp-reset=0
loose-innodb-cmpmem=0
loose-innodb-cmpmem-reset=0
loose-innodb-buffer-page=0
loose-innodb-buffer-page-lru=0
loose-innodb-buffer-pool-stats=0
loose-innodb-metrics=0
loose-innodb-ft-default-stopword=0
loose-innodb-ft-inserted=0
loose-innodb-ft-deleted=0
loose-innodb-ft-being-deleted=0
loose-innodb-ft-config=0
loose-innodb-ft-index-cache=0
loose-innodb-ft-index-table=0
loose-innodb-sys-tables=0
loose-innodb-sys-tablestats=0
loose-innodb-sys-indexes=0
loose-innodb-sys-columns=0
loose-innodb-sys-fields=0
loose-innodb-sys-foreign=0
loose-innodb-sys-foreign-cols=0