如何实现 "mysql ExecStart=taskset"

概述

在本文中，我将向你介绍如何实现 "mysql ExecStart=taskset"。这个任务要求我们使用taskset命令将mysql进程绑定到指定的CPU核心上运行。我将以步骤的形式向你展示整个过程，并提供相应的代码和注释。

步骤

下面是实现 "mysql ExecStart=taskset" 的步骤。

步骤 描述
步骤1 安装mysql
步骤2 创建一个启动脚本
步骤3 修改启动脚本
步骤4 使用taskset命令绑定CPU核心

接下来，我们将详细讨论每个步骤，并提供相应的代码。

步骤1：安装mysql

首先，你需要安装mysql。你可以使用以下命令在Ubuntu上安装mysql：

sudo apt-get update
sudo apt-get install mysql-server

步骤2：创建一个启动脚本

接下来，我们将创建一个启动脚本来启动mysql服务。在终端中执行以下命令：

sudo nano /etc/init.d/mysql

这将在终端中打开一个新的文件。在该文件中，你需要添加以下代码：

#!/bin/bash
#
# mysql        Startup script for the MySQL database server
#
# chkconfig: - 64 36
# description: MySQL database server.
# processname: mysqld
# pidfile: /var/run/mysqld/mysqld.pid
# config: /etc/mysql/my.cnf

# Source function library.
. /etc/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ ${NETWORKING} = "no" ] && exit 0

[ -x /usr/sbin/mysqld ] || exit 0

# Set defaults.
# The following variables are overridden by the values specified in the
# startup scripts.  For these, and for the defaults below, the value
# specified is the maximum value allowed by MySQL.
# You can increase these values if you are running large BLOB columns.
# This is not recommended for very large log files.

# The following variables are only set for letting mysql-server find things.

# Set some defaults
MyIsamRecoverOptions=""
#myisam_recover_options=""
#mysql_group=mysql
#mysql_user=mysql
#mysql_home=/var/lib/mysql
#mysql_bin=/usr/sbin/mysqld
# mysqld_pidfile=/var/run/mysqld/mysqld.pid
# mysql_sock=/var/run/mysqld/mysqld.sock
# mysql_opts="--defaults-file=/etc/mysql/my.cnf"

# Some scripts may execute mysqld_safe which would define these values.
[ -z "$mysql_pidfile_path" ] && mysql_pidfile_path=/var/run/mysqld
[ -z "$mysqld_safe_logfile_path" ] && mysqld_safe_logfile_path=/var/log/mysql/mysqld.log

# Get the maximum number of open files the system administrator
# will allow for this process.
[ -n "$OPEN_FILES_LIMIT" ] && ulimit -n $OPEN_FILES_LIMIT

# Get the maximum nice value allowed for this process.
[ -n "$PROCESS_MAX_NICE" ] && renice $PROCESS_MAX_NICE -p $$

# Get the maximum priority allowed for this process.
[ -n "$PROCESS_PRIORITY" ] && chrt -f -p $PROCESS_PRIORITY $$

# Get the CPU affinity for this process.
taskset -c -p $$ > /dev/null

# killproc $mysql_bin
#     使用此命令杀死mysql进程

# Start and stop the mysql daemon.
start() {
    # Start delayed until boot scripts have completed
    #导入环境变量
    [ -e /usr/share/mysql/mysql.server ] && source /usr/share/mysql/mysql.server

    [ -e /etc/sysconfig/$prog ] && source /etc/sysconfig/$prog

    if [ "$MYSQLD_BOOTSTRAP" = "1" ]; then
        # Bootstrap the MySQL server
        bootstrap
    fi

    # Start the daemon
    [ -x $exec $mysqld_safe $defaults -c $MYSQLD_OPTS ] && \
        $exec $mysqld_safe $defaults -c $MYSQLD_OPTS </dev/null >/dev/null 2>&1 &
    retval=$?
    pid=$!
    echo $pid > $mysql_pidfile_path/mysqld.pid
    wait_for_pid created $pid

    # Generate SSL certificates after the server has been