144 lines
4.0 KiB
HTML
144 lines
4.0 KiB
HTML
<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>TCP缓冲区计算器</title>
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<style>
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body {
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font-family: Arial, sans-serif;
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max-width: 800px;
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margin: 0 auto;
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padding: 20px;
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background-color: #f5f5f5;
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}
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.calculator {
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background-color: white;
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padding: 20px;
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border-radius: 8px;
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box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
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}
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.input-group {
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margin-bottom: 15px;
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}
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label {
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display: block;
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margin-bottom: 5px;
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}
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input {
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width: 200px;
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padding: 8px;
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border: 1px solid #ddd;
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border-radius: 4px;
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}
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button {
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background-color: #4CAF50;
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color: white;
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padding: 10px 20px;
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border: none;
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border-radius: 4px;
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cursor: pointer;
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}
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button:hover {
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background-color: #45a049;
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}
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.result {
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margin-top: 20px;
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padding: 15px;
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background-color: #e8f5e9;
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border-radius: 4px;
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}
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</style>
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</head>
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<body>
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<div class="calculator">
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<h1>TCP缓冲区计算器</h1>
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<div class="input-group">
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<label for="bandwidth">带宽 (Mbps):</label>
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<input type="number" id="bandwidth" placeholder="例如: 600">
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</div>
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<div class="input-group">
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<label for="rtt">RTT (毫秒):</label>
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<input type="number" id="rtt" placeholder="例如: 170">
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</div>
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<button onclick="calculateBDP()">计算</button>
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<div class="result" id="result" style="display: none;">
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<h3>计算结果：</h3>
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<p>BDP (比特) = <span id="bdpBits"></span> bits</p>
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<p>BDP (字节) = <span id="bdpBytes"></span> bytes</p>
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<div class="adjustment">
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<button onclick="adjustValue(-1)">-1 MiB</button>
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<button onclick="adjustValue(-5)">-5 MiB</button>
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<button onclick="adjustValue(1)">+1 MiB</button>
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<button onclick="adjustValue(5)">+5 MiB</button>
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</div>
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<h3>建议的 TCP 缓冲区设置：</h3>
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<p>net.ipv4.tcp_wmem="4096 16384 <span id="recommendedWmem"></span>"</p>
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<p>net.ipv4.tcp_rmem="4096 87380 <span id="recommendedRmem"></span>"</p>
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<button onclick="generateScript()">生成永久保存脚本</button>
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<div id="script" style="display: none;">
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<h3>永久保存脚本：</h3>
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<pre id="scriptContent"></pre>
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</div>
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</div>
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</div>
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<script>
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let currentBdpBytes = 0;
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function calculateBDP() {
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const bandwidth = document.getElementById('bandwidth').value;
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const rtt = document.getElementById('rtt').value;
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const bps = bandwidth * 1000000;
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const rttSeconds = rtt / 1000;
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const bdpBits = bps * rttSeconds;
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currentBdpBytes = Math.ceil(bdpBits / 8);
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updateDisplay();
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}
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function adjustValue(mebibytes) {
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const adjustment = mebibytes * 1024 * 1024; // 转换 MiB 为字节
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currentBdpBytes = Math.max(0, currentBdpBytes + adjustment);
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updateDisplay();
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}
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function updateDisplay() {
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document.getElementById('bdpBits').textContent = (currentBdpBytes * 8);
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document.getElementById('bdpBytes').textContent = currentBdpBytes;
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document.getElementById('recommendedWmem').textContent = currentBdpBytes;
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document.getElementById('recommendedRmem').textContent = currentBdpBytes;
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document.getElementById('result').style.display = 'block';
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}
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function generateScript() {
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const scriptContent = `#!/bin/bash
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# 设置TCP缓冲区大小
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sysctl -w net.ipv4.tcp_wmem="4096 16384 ${currentBdpBytes}"
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sysctl -w net.ipv4.tcp_rmem="4096 87380 ${currentBdpBytes}"
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# 将设置写入/etc/sysctl.conf以便永久保存
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echo "net.ipv4.tcp_wmem = 4096 16384 ${currentBdpBytes}" >> /etc/sysctl.conf
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echo "net.ipv4.tcp_rmem = 4096 87380 ${currentBdpBytes}" >> /etc/sysctl.conf
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# 应用更改
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sysctl -p`;
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document.getElementById('scriptContent').textContent = scriptContent;
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document.getElementById('script').style.display = 'block';
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}
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</script>
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</body>
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</html> |