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stream: bump default highWaterMark · nodejs/node@1abff07 · GitHub

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stream: bump default highWaterMark
This should give a performance boost accross the board. Given that the old limit is a decod old and memory capacity has doubled many times since I think it is appropriate to slightly bump the default limit. PR-URL: #52037 Refs: #46608 Refs: #50120 Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Yagiz Nizipli <yagiz.nizipli@sentry.io> Reviewed-By: Chengzhong Wu <legendecas@gmail.com> Reviewed-By: Moshe Atlow <moshe@atlow.co.il> Reviewed-By: Mohammed Keyvanzadeh <mohammadkeyvanzade94@gmail.com> Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
1 parent 57d2e48 commit 1abff07

18 files changed

Lines changed: 34 additions & 19 deletions

‎benchmark/net/net-c2s.js‎

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@@ -6,7 +6,7 @@ const net = require('net');
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const PORT = common.PORT;
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const bench = common.createBenchmark(main, {
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len: [64, 102400, 1024 * 1024 * 16],
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len: [64, 102400, 1024 * 64 * 16],
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type: ['utf', 'asc', 'buf'],
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dur: [5],
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}, {

‎benchmark/net/net-pipe.js‎

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@@ -6,7 +6,7 @@ const net = require('net');
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const PORT = common.PORT;
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const bench = common.createBenchmark(main, {
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len: [2, 64, 102400, 1024 * 1024 * 16],
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len: [2, 64, 102400, 1024 * 64 * 16],
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type: ['utf', 'asc', 'buf'],
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dur: [5],
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}, {

‎benchmark/net/net-s2c.js‎

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@@ -5,7 +5,7 @@ const common = require('../common.js');
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const PORT = common.PORT;
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const bench = common.createBenchmark(main, {
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sendchunklen: [256, 32 * 1024, 128 * 1024, 16 * 1024 * 1024],
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sendchunklen: [256, 32 * 1024, 128 * 1024, 16 * 64 * 1024],
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type: ['utf', 'asc', 'buf'],
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recvbuflen: [0, 64 * 1024, 1024 * 1024],
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recvbufgenfn: ['true', 'false'],

‎benchmark/net/net-wrap-js-stream-passthrough.js‎

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@@ -5,7 +5,7 @@ const common = require('../common.js');
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const { PassThrough } = require('stream');
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const bench = common.createBenchmark(main, {
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len: [64, 102400, 1024 * 1024 * 16],
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len: [64, 102400, 1024 * 64 * 16],
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type: ['utf', 'asc', 'buf'],
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dur: [5],
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}, {

‎benchmark/net/tcp-raw-c2s.js‎

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@@ -9,7 +9,7 @@ const util = require('util');
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// run the function with those settings.
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// if not, then queue up a bunch of child processes.
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const bench = common.createBenchmark(main, {
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len: [102400, 1024 * 1024 * 16],
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len: [102400, 1024 * 64 * 16],
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type: ['utf', 'asc', 'buf'],
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dur: [5],
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}, {

‎benchmark/net/tcp-raw-pipe.js‎

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@@ -9,7 +9,7 @@ const util = require('util');
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// run the function with those settings.
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// if not, then queue up a bunch of child processes.
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const bench = common.createBenchmark(main, {
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len: [102400, 1024 * 1024 * 16],
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len: [102400, 1024 * 64 * 16],
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type: ['utf', 'asc', 'buf'],
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dur: [5],
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}, {

‎benchmark/net/tcp-raw-s2c.js‎

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@@ -9,7 +9,7 @@ const util = require('util');
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// run the function with those settings.
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// If not, then queue up a bunch of child processes.
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const bench = common.createBenchmark(main, {
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len: [102400, 1024 * 1024 * 16],
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len: [102400, 1024 * 64 * 16],
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type: ['utf', 'asc', 'buf'],
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dur: [5],
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}, {

‎doc/api/stream.md‎

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@@ -3479,6 +3479,9 @@ method.
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<!-- YAML
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changes:
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- version: REPLACEME
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pr-url: https://github.com/nodejs/node/pull/52037
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description: bump default highWaterMark.
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- version: v15.5.0
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pr-url: https://github.com/nodejs/node/pull/36431
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description: support passing in an AbortSignal.
@@ -3500,7 +3503,7 @@ changes:
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* `options` {Object}
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* `highWaterMark` {number} Buffer level when
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[`stream.write()`][stream-write] starts returning `false`. **Default:**
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`16384` (16 KiB), or `16` for `objectMode` streams.
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`65536` (64 KiB), or `16` for `objectMode` streams.
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* `decodeStrings` {boolean} Whether to encode `string`s passed to
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[`stream.write()`][stream-write] to `Buffer`s (with the encoding
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specified in the [`stream.write()`][stream-write] call) before passing
@@ -3856,6 +3859,9 @@ constructor and implement the [`readable._read()`][] method.
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<!-- YAML
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changes:
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- version: REPLACEME
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pr-url: https://github.com/nodejs/node/pull/52037
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description: bump default highWaterMark.
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- version: v15.5.0
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pr-url: https://github.com/nodejs/node/pull/36431
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description: support passing in an AbortSignal.
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* `options` {Object}
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* `highWaterMark` {number} The maximum [number of bytes][hwm-gotcha] to store
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in the internal buffer before ceasing to read from the underlying resource.
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**Default:** `16384` (16 KiB), or `16` for `objectMode` streams.
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**Default:** `65536` (64 KiB), or `16` for `objectMode` streams.
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* `encoding` {string} If specified, then buffers will be decoded to
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strings using the specified encoding. **Default:** `null`.
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* `objectMode` {boolean} Whether this stream should behave

‎lib/internal/streams/state.js‎

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@@ -8,7 +8,8 @@ const { validateInteger } = require('internal/validators');
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const { ERR_INVALID_ARG_VALUE } = require('internal/errors').codes;
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let defaultHighWaterMarkBytes = 16 * 1024;
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// TODO (fix): For some reason Windows CI fails with bigger hwm.
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let defaultHighWaterMarkBytes = process.platform === 'win32' ? 16 * 1024 : 64 * 1024;
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let defaultHighWaterMarkObjectMode = 16;
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function highWaterMarkFrom(options, isDuplex, duplexKey) {

‎test/parallel/test-http-no-read-no-dump.js‎

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@@ -34,7 +34,7 @@ const server = http.createServer((req, res) => {
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}, common.mustCall((res) => {
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res.resume();
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post.write(Buffer.alloc(16 * 1024).fill('X'));
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post.write(Buffer.alloc(64 * 1024).fill('X'));
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onPause = () => {
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post.end('something');
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};

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