关闭numa,内存优化，至于什么是numa，大家自己上网上查一下，文章很多。
最近在测试mariadb，要想选型，千万不要听别人说那个好那个不好，要自己实践，说白了就是多做实验，多敲命令，自己去感受，适合自己的才是最好的。
至于选什么，就看你能hold住那种数据库了。
mysql 5.6.x [root@mysql92 ~]# yum install numactl -y [root@mysql92 ~]# numactl --interleave=all mysqld_safe --defaults-file=/etc/my.cnf & [1] 7592 [root@mysql92 ~]# [root@mysql92 ~]# 170103 19:04:34 mysqld_safe Logging to ‘/data/mysqllogs/error.log‘. 170103 19:04:34 mysqld_safe Starting mysqld daemon with databases from /data/mysqldata mariadb 10.1.x [root@mysql91 ~]# mysqld_safe --defaults-file=/etc/my.cnf --numa-interleave & [1] 4066 [root@mysql91 ~]# 170103 19:06:52 mysqld_safe Logging to ‘/log/mysql/error.log‘.
mysql & mariadb mysqld_safe的区别
最近一直在和贺春旸老师学习mariadb，自己也在不断地测试，发现mariadb 的服务层做的确实要比
mysql 要好很多。看参数自己找区别吧。
Mariadb [root@mysql91 ~]# mysqld_safe --help Usage: /usr/bin/mysqld_safe [OPTIONS] --no-defaults Don‘t read the system defaults file --core-file-size=LIMIT Limit core files to the specified size --defaults-file=FILE Use the specified defaults file --defaults-extra-file=FILE Also use defaults from the specified file --ledir=DIRECTORY Look for mysqld in the specified directory --open-files-limit=LIMIT Limit the number of open files --crash-script=FILE Script to call when mysqld crashes --timezone=TZ Set the system timezone --malloc-lib=LIB Preload shared library LIB if available --mysqld=FILE Use the specified file as mysqld --mysqld-version=VERSION Use "mysqld-VERSION" as mysqld --dry-run Simulate the start to detect errors but don‘t start --nice=NICE Set the scheduling priority of mysqld --no-auto-restart Exit after starting mysqld --nowatch Exit after starting mysqld --plugin-dir=DIR Plugins are under DIR or DIR/VERSION, if VERSION is given --skip-kill-mysqld Don‘t try to kill stray mysqld processes --syslog Log messages to syslog with ‘logger‘ --skip-syslog Log messages to error log (default) --syslog-tag=TAG Pass -t "mysqld-TAG" to ‘logger‘ --flush-caches Flush and purge buffers/caches before starting the server --numa-interleave Run mysqld with its memory interleaved on all NUMA nodes All other options are passed to the mysqld program.
MySQL [root@mysql92 ~]# mysqld_safe --help Usage: /usr/bin/mysqld_safe [OPTIONS] --no-defaults Don‘t read the system defaults file --defaults-file=FILE Use the specified defaults file --defaults-extra-file=FILE Also use defaults from the specified file --ledir=DIRECTORY Look for mysqld in the specified directory --open-files-limit=LIMIT Limit the number of open files --core-file-size=LIMIT Limit core files to the specified size --timezone=TZ Set the system timezone --malloc-lib=LIB Preload shared library LIB if available --mysqld=FILE Use the specified file as mysqld --mysqld-version=VERSION Use "mysqld-VERSION" as mysqld --nice=NICE Set the scheduling priority of mysqld --plugin-dir=DIR Plugins are under DIR or DIR/VERSION, if VERSION is given --skip-kill-mysqld Don‘t try to kill stray mysqld processes --syslog Log messages to syslog with ‘logger‘ --skip-syslog Log messages to error log (default) --syslog-tag=TAG Pass -t "mysqld-TAG" to ‘logger‘ All other options are passed to the mysqld program.
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