tp6+swoole+mysql+nginx+redis高并发优化

1.服务器

IDC机房提供的物理机：单机 40核，64G内存，带宽100M，最后带宽增加至300M

2.redis 7.2配置

timeout=600 #空闲连接超时时间,0表示不断开

maxclients=100000 #最大连接数

3.Mysql 5.7配置，按宝塔16-32G优化方案并调整：

table_open_cache = 4096

max_connections = 15000

4.Nginx 1.24配置

worker_rlimit_nofile 51200;

events

{

use epoll;

worker_connections 1000000;

multi_accept on;

}

5.php 7.2配置

php.ini：memory_limit=30720M

tp6: config/swoole.php配置server：

php 复制代码

//配置选项：https://geekdaxue.co/read/swoole-wiki/doc-2.3-Configuration-Options.md
'server'     => [
     'host'      => env('SWOOLE_HOST', '0.0.0.0'), // 监听地址
     'port'      => env('SWOOLE_PORT', 8324), // 监听端口
     'mode'      => SWOOLE_PROCESS, // 运行模式 默认为SWOOLE_PROCESS
     'sock_type' => SWOOLE_SOCK_TCP, // sock type 默认为SWOOLE_SOCK_TCP
     'options'   => [
         'pid_file'              => runtime_path() . 'swoole.pid',
         'log_file'              => runtime_path() . 'swoole.log',
         'daemonize'             => false,
         // Normally this value should be 1~4 times larger according to your cpu cores.
         'reactor_num'           => swoole_cpu_num(),
         'worker_num'            => swoole_cpu_num(),
         'task_worker_num'       => swoole_cpu_num(),
         'task_enable_coroutine' => false,
         'task_max_request'      => 20000, //修改了这里
         'enable_static_handler' => true,
         'document_root'         => root_path('public'),
         'package_max_length'    => 50 * 1024 * 1024,
         'buffer_output_size'    => 10 * 1024 * 1024,
         'socket_buffer_size'    => 128 * 1024 * 1024,
         'max_request'           => 30000, //修改了这里
         'max_connection'        => 30000, //修改了这里
         'send_yield'            => true,
         'reload_async'          => true,
     ],
 ],
//连接池
'pool' => [
	//数据库
    'db' => [
        'enable'        => true,
        'max_active'    => 10, //修改了这里 - 原来是3，最大不超32
        'max_wait_time' => 5,
    ],
    //缓存
    'cache' => [
        'enable'        => true,
        'max_active'    => 10, //修改了这里 - 原来是3，最大不超32
        'max_wait_time' => 5,
    ],
],

6.进程管理器 supervisor 配置

bash 复制代码

[supervisord]
minfds=1000000
minprocs=50000
stopwaitsecs=60 #你也可以调的更大

7.解决 Swoole 服务报错 Too many open files 文件句柄超出系统限制

1.在 Swoole 的日志中遇到了 Too many open files 这种报错，说明你的程序以达到 Linux 所允许的打开文件数上限。需要修改 ulimit 设置，修改 /etc/security/limits.conf，加入

bash 复制代码

* soft nofile 262140
* hard nofile 262140
root soft nofile 262140
root hard nofile 262140
* soft core unlimited
* hard core unlimited
root soft core unlimited
root hard core unlimited

需要重启系统生效

bash 复制代码

或者：ulimit -n 1000000 对当前命令窗口有效

2.# 将 PID 修改为你要检查的进程ID

bash 复制代码

cat /proc/PID/limits

如果这里的Max open files过小，也是需要进行修改的

3.systemd 需要修改LimitNOFILE，修改systemd全局limit：
/etc/systemd/system.conf

8.Swoole优化内核参数调整，修改文件/etc/sysctl.conf：

bash 复制代码

vm.overcommit_memory = 1
net.core.somaxconn = 99999
net.unix.max_dgram_qlen = 10000
net.ipv4.tcp_mem  =   379008       505344  758016
net.ipv4.tcp_wmem = 4096        16384   4194304
net.ipv4.tcp_rmem = 4096          87380   4194304
net.core.wmem_default = 8388608
net.core.rmem_default = 8388608
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 0
net.ipv4.tcp_fin_timeout = 60
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_max_syn_backlog = 81920
net.ipv4.tcp_synack_retries = 3
net.ipv4.tcp_syn_retries = 3
net.ipv4.tcp_keepalive_time = 300
net.ipv4.ip_local_port_range = 20000 65000
net.ipv4.tcp_max_tw_buckets = 200000
net.ipv4.route.max_size = 5242880
kernel.msgmnb = 42035200
kernel.msgmni = 99999
kernel.msgmax = 819200
net.local.dgram.maxdgram = 819200
net.local.dgram.recvspace = 200000
kernel.core_pattern = /data/core_files/core-%e-%p-%t

内核参数调整方案2：

bash 复制代码

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
vm.swappiness = 0
net.ipv4.neigh.default.gc_stale_time=120
net.ipv4.conf.all.rp_filter=0
net.ipv4.conf.default.rp_filter=0
net.ipv4.conf.default.arp_announce = 2
net.ipv4.conf.lo.arp_announce=2
net.ipv4.conf.all.arp_announce=2
#net.ipv4.tcp_max_tw_buckets = 5000
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_max_syn_backlog = 1024
net.ipv4.tcp_synack_retries = 2
kernel.sysrq = 1
#优化
net.ipv4.tcp_tw_recycle = 1
net.ipv4.ip_local_port_range = 10000 65535
net.ipv4.tcp_syn_retries = 2
net.ipv4.tcp_synack_retries = 2
net.ipv4.tcp_fin_timeout = 10
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_keepalive_intvl = 10
net.ipv4.tcp_keepalive_probes = 5
net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_retries2=3
net.ipv4.tcp_orphan_retries=2

需执行sysctl -p命令使配置生效或重启服务器，参考：https://www.bookstack.cn/read/SwooleDoc/10.md

9.ab工具并发测试：

bash 复制代码

./ab -c10000 -n10000 http://127.0.0.1:8088/