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benchmark: add benches for fs.stat & fs.statSync #8338

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benchmark: add benches for fs.stat & fs.statSync #8338

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58f5e9b
benchmark: fix off-by-one error in fs benchmarks
addaleax Aug 30, 2016
82de541
benchmark: add benches for fs.stat & fs.statSync
addaleax Aug 30, 2016
78608a0
Pass used function directly to the closure
addaleax Sep 9, 2016
514a8a7
Maybe? simplify function call/remove variable shadowing
addaleax Sep 9, 2016
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2 changes: 1 addition & 1 deletion benchmark/fs/bench-readdir.js
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Original file line number Diff line number Diff line change
Expand Up @@ -14,7 +14,7 @@ function main(conf) {

bench.start();
(function r(cntr) {
if (--cntr <= 0)
if (cntr-- <= 0)
return bench.end(n);
fs.readdir(path.resolve(__dirname, '../../lib/'), function() {
r(cntr);
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4 changes: 2 additions & 2 deletions benchmark/fs/bench-realpath.js
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Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,7 @@ function main(conf) {

function relativePath(n) {
(function r(cntr) {
if (--cntr <= 0)
if (cntr-- <= 0)
return bench.end(n);
fs.realpath(relative_path, function() {
r(cntr);
Expand All @@ -37,7 +37,7 @@ function relativePath(n) {

function resolvedPath(n) {
(function r(cntr) {
if (--cntr <= 0)
if (cntr-- <= 0)
return bench.end(n);
fs.realpath(resolved_path, function() {
r(cntr);
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24 changes: 24 additions & 0 deletions benchmark/fs/bench-stat.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,24 @@
'use strict';

const common = require('../common');
const fs = require('fs');

const bench = common.createBenchmark(main, {
n: [1e4],
kind: ['lstat', 'stat']
});


function main(conf) {
const n = conf.n >>> 0;
const fn = fs[conf.kind];
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I don't know how much it matters/affects things, but maybe we should change this variable name to avoid shadowing?

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I’ve simply replaced the only use of this variable with fs[conf.kind]. It doesn’t seem to make any difference, and I would expect any difference it makes to be pretty weak in comparison to the cost of the actual syscall/thread pool operation.


bench.start();
(function r(cntr, fn) {
if (cntr-- <= 0)
return bench.end(n);
fn(__filename, function() {
r(cntr, fn);
});
}(n, fn));
}
21 changes: 21 additions & 0 deletions benchmark/fs/bench-statSync.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,21 @@
'use strict';

const common = require('../common');
const fs = require('fs');

const bench = common.createBenchmark(main, {
n: [1e4],
kind: ['lstatSync', 'statSync']
});


function main(conf) {
const n = conf.n >>> 0;
const fn = fs[conf.kind];

bench.start();
for (var i = 0; i < n; i++) {
fn(__filename);
}
bench.end(n);
}