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mereith 2024-11-20 14:10:39 +08:00
parent 3d0033c8e0
commit 01f7c57d72
1 changed files with 44 additions and 9 deletions
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index.html
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@ -75,34 +75,69 @@
<h3>计算结果：</h3> <h3>计算结果：</h3>
<p>BDP (比特) = <span id="bdpBits"></span> bits</p> <p>BDP (比特) = <span id="bdpBits"></span> bits</p>
<p>BDP (字节) = <span id="bdpBytes"></span> bytes</p> <p>BDP (字节) = <span id="bdpBytes"></span> bytes</p>
<div class="adjustment">
<button onclick="adjustValue(-1)">-1 MiB</button>
<button onclick="adjustValue(-5)">-5 MiB</button>
<button onclick="adjustValue(1)">+1 MiB</button>
<button onclick="adjustValue(5)">+5 MiB</button>
</div>
<h3>建议的 TCP 缓冲区设置：</h3> <h3>建议的 TCP 缓冲区设置：</h3>
<p>net.ipv4.tcp_wmem="4096 16384 <span id="recommendedWmem"></span>"</p> <p>net.ipv4.tcp_wmem="4096 16384 <span id="recommendedWmem"></span>"</p>
<p>net.ipv4.tcp_rmem="4096 87380 <span id="recommendedRmem"></span>"</p> <p>net.ipv4.tcp_rmem="4096 87380 <span id="recommendedRmem"></span>"</p>
<button onclick="generateScript()">生成永久保存脚本</button>
<div id="script" style="display: none;">
<h3>永久保存脚本：</h3>
<pre id="scriptContent"></pre>
</div>
</div> </div>
</div> </div>
<script> <script>
let currentBdpBytes = 0;
function calculateBDP() { function calculateBDP() {
const bandwidth = document.getElementById('bandwidth').value; const bandwidth = document.getElementById('bandwidth').value;
const rtt = document.getElementById('rtt').value; const rtt = document.getElementById('rtt').value;
// 将带宽转换为 bps (Mbps to bps)
const bps = bandwidth * 1000000; const bps = bandwidth * 1000000;
// 将 RTT 转换为秒
const rttSeconds = rtt / 1000; const rttSeconds = rtt / 1000;
// 计算 BDP (bits)
const bdpBits = bps * rttSeconds; const bdpBits = bps * rttSeconds;
// 转换为字节 currentBdpBytes = Math.ceil(bdpBits / 8);
const bdpBytes = Math.ceil(bdpBits / 8);
document.getElementById('bdpBits').textContent = bdpBits.toLocaleString(); updateDisplay();
document.getElementById('bdpBytes').textContent = bdpBytes.toLocaleString(); }
document.getElementById('recommendedWmem').textContent = bdpBytes.toLocaleString();
document.getElementById('recommendedRmem').textContent = bdpBytes.toLocaleString();
function adjustValue(mebibytes) {
const adjustment = mebibytes * 1024 * 1024; // 转换 MiB 为字节
currentBdpBytes = Math.max(0, currentBdpBytes + adjustment);
updateDisplay();
}
function updateDisplay() {
document.getElementById('bdpBits').textContent = (currentBdpBytes * 8);
document.getElementById('bdpBytes').textContent = currentBdpBytes;
document.getElementById('recommendedWmem').textContent = currentBdpBytes;
document.getElementById('recommendedRmem').textContent = currentBdpBytes;
document.getElementById('result').style.display = 'block'; document.getElementById('result').style.display = 'block';
} }
function generateScript() {
const scriptContent = `#!/bin/bash
# 设置TCP缓冲区大小
sysctl -w net.ipv4.tcp_wmem="4096 16384 ${currentBdpBytes}"
sysctl -w net.ipv4.tcp_rmem="4096 87380 ${currentBdpBytes}"
# 将设置写入/etc/sysctl.conf以便永久保存
echo "net.ipv4.tcp_wmem = 4096 16384 ${currentBdpBytes}" >> /etc/sysctl.conf
echo "net.ipv4.tcp_rmem = 4096 87380 ${currentBdpBytes}" >> /etc/sysctl.conf
# 应用更改
sysctl -p`;
document.getElementById('scriptContent').textContent = scriptContent;
document.getElementById('script').style.display = 'block';
}
</script> </script>
</body> </body>