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read() performance is improved most by switching from an array to a linked list for storing buffered data. However, other changes that also contribute include: making some hot functions inlinable, faster read() argument checking, and misc code rearrangement to avoid unnecessary code execution. PR-URL: https://github.com/nodejs/node/pull/7077 Reviewed-By: Calvin Metcalf <calvin.metcalf@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
33 lines
673 B
JavaScript
33 lines
673 B
JavaScript
'use strict';
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const common = require('../common');
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const v8 = require('v8');
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const Readable = require('stream').Readable;
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const bench = common.createBenchmark(main, {
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n: [100e1]
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});
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function main(conf) {
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const n = +conf.n;
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const b = new Buffer(32);
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const s = new Readable();
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function noop() {}
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s._read = noop;
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// Force optimization before starting the benchmark
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s.push(b);
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v8.setFlagsFromString('--allow_natives_syntax');
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eval('%OptimizeFunctionOnNextCall(s.read)');
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s.push(b);
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while (s.read(12));
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bench.start();
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for (var k = 0; k < n; ++k) {
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for (var i = 0; i < 1e4; ++i)
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s.push(b);
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while (s.read(12));
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}
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bench.end(n);
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}
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