按 2 核 2G 的标准，把你的 config/octane.php 调整好

下面按 2 核 2G 的标准，把你的 config/octane.php 调整好。核心思路是：Worker 数量减半、GC 阈值调低、单包/缓冲调小，避免 2G 内存被撑爆。

<?php

use Laravel\Octane\Contracts\OperationTerminated;
use Laravel\Octane\Events\RequestHandled;
use Laravel\Octane\Events\RequestReceived;
use Laravel\Octane\Events\RequestTerminated;
use Laravel\Octane\Events\TaskReceived;
use Laravel\Octane\Events\TaskTerminated;
use Laravel\Octane\Events\TickReceived;
use Laravel\Octane\Events\TickTerminated;
use Laravel\Octane\Events\WorkerErrorOccurred;
use Laravel\Octane\Events\WorkerStarting;
use Laravel\Octane\Events\WorkerStopping;
use Laravel\Octane\Listeners\CloseMonologHandlers;
use Laravel\Octane\Listeners\CollectGarbage;
use Laravel\Octane\Listeners\DisconnectFromDatabases;
use Laravel\Octane\Listeners\EnsureUploadedFilesAreValid;
use Laravel\Octane\Listeners\EnsureUploadedFilesCanBeMoved;
use Laravel\Octane\Listeners\FlushOnce;
use Laravel\Octane\Listeners\FlushTemporaryContainerInstances;
use Laravel\Octane\Listeners\FlushUploadedFiles;
use Laravel\Octane\Listeners\ReportException;
use Laravel\Octane\Listeners\StopWorkerIfNecessary;
use Laravel\Octane\Octane;

return [

    // 默认服务器 swoole
    'server' => env('OCTANE_SERVER', 'swoole'),

    // 生产站点是 https://www.madama.cn，必须开启
    'https' => env('OCTANE_HTTPS', true),

    'listeners' => [
        WorkerStarting::class => [
            EnsureUploadedFilesAreValid::class,
            EnsureUploadedFilesCanBeMoved::class,
        ],

        RequestReceived::class => [
            ...Octane::prepareApplicationForNextOperation(),
            ...Octane::prepareApplicationForNextRequest(),
        ],

        RequestHandled::class => [
            //
        ],

        RequestTerminated::class => [
            FlushUploadedFiles::class,   // ✅ 及时释放上传临时文件，防止内存堆积
        ],

        TaskReceived::class => [
            ...Octane::prepareApplicationForNextOperation(),
        ],

        TaskTerminated::class => [
            //
        ],

        TickReceived::class => [
            ...Octane::prepareApplicationForNextOperation(),
        ],

        TickTerminated::class => [
            //
        ],

        OperationTerminated::class => [
            FlushOnce::class,
            FlushTemporaryContainerInstances::class,
            DisconnectFromDatabases::class,   // ✅ 避免长连接导致 MySQL 连接数爆满
            CollectGarbage::class,            // ✅ 主动触发 GC
        ],

        WorkerErrorOccurred::class => [
            ReportException::class,
            StopWorkerIfNecessary::class,
        ],

        WorkerStopping::class => [
            CloseMonologHandlers::class,
        ],
    ],

    'warm' => [
        ...Octane::defaultServicesToWarm(),
    ],

    'flush' => [
        //
    ],

    // Swoole Table 示例，若没用到可以删掉
    'tables' => [
        // 'example:1000' => [
        //     'name' => 'string:1000',
        //     'votes' => 'int',
        // ],
    ],

    // Octane Cache（Swoole Table），2G 内存下保守设置
    'cache' => [
        'rows' => 100,
        'bytes' => 1000,
    ],

    'watch' => [
        'app',
        'bootstrap',
        'config/**/*.php',
        'database/**/*.php',
        'public/**/*.php',
        'resources/**/*.php',
        'routes',
        'composer.lock',
        '.env',
    ],

    // GC 阈值：2G 内存场景设 20M，比 4G 时更激进
    'garbage' => 20,

    // 最大执行时间：60 秒（Fresns 处理图片/大请求可能较慢）
    'max_execution_time' => 60,

    'state_file' => env('OCTANE_STATE_FILE', storage_path('logs/octane-server-state.json')),

    /*
    |--------------------------------------------------------------------------
    | Swoole Options  ← 按 2核2G 标准调整
    |--------------------------------------------------------------------------
    */
    'swoole' => [
        'options' => [
            'worker_num'          => 2,                        // 2核 × 1，2G 内存下不要开 4 个
            'task_worker_num'     => 1,                        // 处理队列任务
            'max_request'         => 500,                      // 每 500 请求重启 Worker 防泄漏（比 1000 更勤）
            'package_max_length'  => 10 * 1024 * 1024,         // 10M 单包上限，2G 内存别开 20M
            'buffer_output_size'  => 2 * 1024 * 1024,          // 2M 输出缓冲
            'socket_buffer_size'  => 8 * 1024 * 1024,          // 8M socket 缓冲
            'enable_coroutine'    => true,                     // 开启协程
            'hook_flags'          => SWOOLE_HOOK_ALL,          // hook 所有阻塞 IO
            'reload_async'        => true,                     // 异步重启
            'max_wait_time'       => 60,                       // Worker 退出等待时间
            'http_compression'    => true,                     // 开启 gzip 压缩
            'log_level'           => SWOOLE_LOG_WARNING,       // 生产只记 warning 以上
        ],
    ],

    'roadrunner' => [
        'command' => env('OCTANE_ROADRUNNER_COMMAND', 'vendor/bin/roadrunner-worker'),
        'http_middleware' => env('OCTANE_ROADRUNNER_HTTP_MIDDLEWARE', 'static'),
    ],

];

关键改动说明（2核2G 对比原来的 4G 配置）

额外建议（2核2G 必做）

1. 加 Swap：2G 物理内存跑 Octane + MySQL + Redis 很容易 OOM，建议至少加 2G Swap：

   fallocate -l 2G /swapfile && chmod 600 /swapfile && mkswap /swapfile && swapon /swapfile
   echo '/swapfile none swap sw 0 0' >> /etc/fstab

2. MySQL / Redis 与本机分离：如果 MySQL、Redis 和 Octane 挤在同一台 2G 机器上，强烈建议把数据库迁到外部，否则 2G 根本不够。

3. 启动命令建议：

   php artisan octane:start --server=swoole --workers=2 --task-workers=1 --max-requests=500

   注意：config/octane.php 里的 swoole.options 优先级高于命令行参数，两者保持一致即可。

4. 监控内存：上线后用 htop 观察，如果单个 Worker 常驻内存超过 150M，需要继续下调 max_request 或排查内存泄漏。