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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。
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| mysql 5.6.x
[iyunv@mysql92 ~]# yum install numactl -y
[iyunv@mysql92 ~]# numactl --interleave=all mysqld_safe --defaults-file=/etc/my.cnf &
[1] 7592
[iyunv@mysql92 ~]#
[iyunv@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
[iyunv@mysql91 ~]# mysqld_safe --defaults-file=/etc/my.cnf --numa-interleave &
[1] 4066
[iyunv@mysql91 ~]# 170103 19:06:52 mysqld_safe Logging to '/log/mysql/error.log'.
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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。
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| Mariadb
[iyunv@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.
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| MySQL
[iyunv@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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