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@ChALkeR

ChALkeR/client2.js

Last active Jun 17, 2018
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const http2 = require('http2');
const fs = require('fs');
const connection = http2.connect('https://localhost:8080', {ca: fs.readFileSync('./keys/localhost-cert.pem')}); // http2session
function request(callback) {
// http2stream
const req = connection.request({
':method': 'GET',
':path': '/'
});
req.on('response', (headers, flags) => {});
req.on('data', (chunk) => {});
req.on('end', () => {
// calling close or destroy on the stream makes no difference
// but technically we shouldn't do that manually in this case anyway
// req.close();
// req.destroy();
callback();
});
req.end();
}
function launch(total, parallel, gci, callback) {
const done = () => {
total--;
if (total % 10000 === 0) console.log(total);
if (gci > 0 && total % gci === 0) {
//global.gc(true); global.gc(true); // Scavenge
// OR
global.gc(); global.gc(); // Mark-sweep
}
if (total >= parallel) request(done);
else if (total === 0) callback();
};
for (let i = 0; i < parallel; i++) request(done);
}
// we will establish a baseline memory usage here
// connect the socket and wait for the first request to come back
request(() => {
// grab current process memory usage
global.gc(); global.gc(); // We are comparing gc-d memory
var baselineMemory = process.memoryUsage();
// total, parallel, gci
// gci = 0 means don't run gc manually
// gci = 100 means run gc manually every 100 requests
launch(30000, 5, /*0*/100, () => {
// GC what we can
for (let i = 0; i < 20; i++) global.gc();
var finalMemory = process.memoryUsage();
var rssDelta = (finalMemory.rss - baselineMemory.rss) / 1024;
var heapTotalDelta = (finalMemory.heapTotal - baselineMemory.heapTotal) / 1024;
var heapUsedDelta = Math.round((finalMemory.heapUsed - baselineMemory.heapUsed) / 1024);
console.log(`Deltas: ${heapTotalDelta} KB Heap Total, ${heapUsedDelta} KB Heap Used, ${rssDelta} KB RSS`);
process.exit(0);
});
});
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