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// Flags: --expose-gc
'use strict';
const common = require('../common');
if (process.config.variables.asan) {
common.skip('ASAN messes with memory measurements');
}
if (common.isPi) {
common.skip('Too slow for Raspberry Pi devices');
}
const assert = require('assert');
const net = require('net');
// Tests that, when receiving small chunks, we do not keep the full length
// of the original allocation for the libuv read call in memory.
let client;
let baseRSS;
const receivedChunks = [];
const N = 250000;
const server = net.createServer(common.mustCall((socket) => {
baseRSS = process.memoryUsage.rss();
socket.setNoDelay(true);
socket.on('data', (chunk) => {
receivedChunks.push(chunk);
if (receivedChunks.length < N) {
client.write('a');
} else {
client.end();
server.close();
}
});
})).listen(0, common.mustCall(() => {
client = net.connect(server.address().port);
client.setNoDelay(true);
client.write('hello!');
}));
process.on('exit', () => {
global.gc();
const bytesPerChunk =
(process.memoryUsage.rss() - baseRSS) / receivedChunks.length;
// We should always have less than one page (usually ~ 4 kB) per chunk.
assert(bytesPerChunk < 650, `measured ${bytesPerChunk} bytes per chunk`);
});
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