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c7153838ec
Fixes https://github.com/denoland/deno/issues/26177 The significant delay was caused by Nagel's algorithm + delayed ACKs in Linux kernels. Here's the [kernel patch](https://lwn.net/Articles/502585/) which added 40ms `tcp_default_delack_min` ``` $ deno run -A pg-bench.mjs # main Tue Oct 15 2024 12:27:22 GMT+0530 (India Standard Time): 42ms $ target/release/deno run -A pg-bench.mjs # this patch Tue Oct 15 2024 12:28:02 GMT+0530 (India Standard Time): 1ms ``` ```js import { Buffer } from "node:buffer"; import pg from 'pg' const { Client } = pg const client = new Client({ connectionString: 'postgresql://postgres:postgres@127.0.0.1:5432/postgres' }) await client.connect() async function fetch() { const startPerf = performance.now(); const res = await client.query(`select $1::int as int, $2 as string, $3::timestamp with time zone as timestamp, $4 as null, $5::bool as boolean, $6::bytea as bytea, $7::jsonb as json `, [ 1337, 'wat', new Date().toISOString(), null, false, Buffer.from('awesome'), JSON.stringify([{ some: 'json' }, { array: 'object' }]) ]) console.log(`${new Date()}: ${Math.round(performance.now() - startPerf)}ms`) } for(;;) await fetch(); ```
63 lines
1.6 KiB
JavaScript
63 lines
1.6 KiB
JavaScript
// deno-fmt-ignore-file
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// deno-lint-ignore-file
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// Copyright Joyent and Node contributors. All rights reserved. MIT license.
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// Taken from Node 18.12.1
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// This file is automatically generated by `tests/node_compat/runner/setup.ts`. Do not modify this file manually.
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'use strict';
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const common = require('../common');
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const assert = require('assert');
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const net = require('net');
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const truthyValues = [true, 1, 'true', {}, []];
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const falseyValues = [false, 0, ''];
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const genSetNoDelay = (desiredArg) => (enable) => {
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assert.strictEqual(enable, desiredArg);
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};
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// setNoDelay should default to true
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let socket = new net.Socket({
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handle: {
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setNoDelay: common.mustCall(genSetNoDelay(true)),
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readStart() {}
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}
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});
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socket.setNoDelay();
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socket = new net.Socket({
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handle: {
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setNoDelay: common.mustCall(genSetNoDelay(true), 1),
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readStart() {}
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}
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});
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truthyValues.forEach((testVal) => socket.setNoDelay(testVal));
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socket = new net.Socket({
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handle: {
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setNoDelay: common.mustNotCall(),
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readStart() {}
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}
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});
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falseyValues.forEach((testVal) => socket.setNoDelay(testVal));
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socket = new net.Socket({
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handle: {
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setNoDelay: common.mustCall(3),
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readStart() {}
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}
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});
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truthyValues.concat(falseyValues).concat(truthyValues)
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.forEach((testVal) => socket.setNoDelay(testVal));
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// If a handler doesn't have a setNoDelay function it shouldn't be called.
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// In the case below, if it is called an exception will be thrown
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socket = new net.Socket({
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handle: {
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setNoDelay: null,
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readStart() {}
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}
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});
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const returned = socket.setNoDelay(true);
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assert.ok(returned instanceof net.Socket);
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