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November 1, 2015 22:14
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| fs = require('fs') | |
| var bufferA = new Buffer(1e+9) | |
| bufferA.fill(0) | |
| var bufferB = new Buffer(1e+0) | |
| bufferB.fill(0) | |
| var fileA = fs.openSync('fileA', 'w') | |
| var fileB = fs.openSync('fileB', 'w') | |
| console.time('A') | |
| fs.write(fileA, bufferA, 0, bufferA.length, function(err) { console.timeEnd('A')}) | |
| console.time('B') | |
| fs.write(fileB, bufferA, 0, bufferB.length, function(err) { console.timeEnd('B')}) | |
| // expected output: B << A | |
| // actual output on OS X node v5.0.0: | |
| //A: 4443.194ms | |
| //B: 4444.997ms |
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I got this in Mac OS X and node 5.
A: 115.469ms
B: 116.775ms