compile
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# download mysql-5.6.10 from https://dev.mysql.com/downloads/mysql/ tar zxf mysql–5.6.10 cd mysql–5.6.10 # set default charset to utf8 cmake –DDEFAULT_CHARSET=utf8 –DDEFAULT_COLLATION=utf8_general_ci # install to /usr/local/mysql make && make install |
initialize database
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# create user mysql and change owner of /usr/local/mysql to mysql groupadd mysql useradd mysql –g mysql chown –R mysql:mysql /usr/local/mysql # still in mysql-5.6.10 scripts/mysql_install_db —user=mysql —basedir=/usr/local/mysql —datadir=/usr/local/mysql/data cd /usr/local/mysql # copy mysql default configuration cp support–files/my–default.cnf my.cnf # start mysql bin/mysqld_safe —user=mysql & # change root password and so on bin/mysql_secure_installation |
optimize
edit my.cnf, append configurations below
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user=mysql # Since 5.5.5, mysql uses innodb as default storage engine, # but innodb requires more memory than MyIASM. # So, on my low memory machine, I have to disable it. # disable innodb and set MyISAM as default storage engine skip–innodb default–storage–engine=MyISAM default–tmp–storage–engine=MEMORY 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 # optimize for low memory key_buffer=16K table_open_cache=4 query_cache_limit=256K query_cache_size=4M max_allowed_packet=1M sort_buffer_size=64K read_buffer_size=256K thread_stack=64K # only local skip–networking |
restart mysql
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# in /usr/local/mysql bin/mysqladmin shutdown –u root –p # start mysql without user parameter bin/mysqld_safe & # check memory usage # on my machine, mysql takes about 32M # in contrast to 60M before optimization free –m # check default storage engine # in /usr/local/mysql bin/mysql –u root –p # show engines\G |