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nedb
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Load tests

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pull/2/head
Louis Chatriot 9 years ago
parent da2765a87f
commit a12ec8b89e
5 changed files with 109 additions and 47 deletions
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  1. 2
      browser-version/test/async.js
  2. 15
      browser-version/test/testLoad.html
  3. 45
      browser-version/test/testLoad.js
  4. 20
      lib/storage.js
  5. 2
      test/db.test.js

2
browser-version/test/async.js
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15
browser-version/test/testLoad.html
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@ -0,0 +1,15 @@
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Test NeDB persistence load in the browser</title>
<link rel="stylesheet" href="mocha.css">
</head>
<body>
<div id="results"></div>
<script src="./async.js"></script>
<script src="../out/nedb.js"></script>
<script src="./testLoad.js"></script>
</body>
</html>

45
browser-version/test/testLoad.js
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@ -0,0 +1,45 @@
console.log('BEGINNING');
var N = 4000
, db = new Nedb({ filename: 'loadTest', autoload: true })
, t, i
, sample = JSON.stringify({ data: Math.random(), _id: Math.random() });
;
// Some inserts in sequence, using the default storage mechanism (IndexedDB in my case)
function someInserts (sn, N, callback) {
var i = 0, beg = Date.now();
async.whilst( function () { return i < N; }
, function (_cb) {
db.insert({ data: Math.random() }, function (err) { i += 1; return _cb(err); });
}
, function (err) {
console.log("Inserts, series " + sn + " " + (Date.now() - beg));
return callback(err);
});
}
// Manually updating the localStorage
function someLS (sn, N, callback) {
var i = 0, beg = Date.now();
for (i = 0; i < N; i += 1) {
localStorage.setItem('loadTestLS', localStorage.getItem('loadTestLS') + sample);
}
console.log("localStorage, series " + sn + " " + (Date.now() - beg));
return callback();
}
localStorage.setItem('loadTestLS', '');
async.waterfall([
function (cb) { db.remove({}, { multi: true }, function (err) { return cb(err); }); }
//, async.apply(someInserts, "#1", N) // N=5000, 141s
//, async.apply(someInserts, "#2", N) // N=5000, 208s
//, async.apply(someInserts, "#3", N) // N=5000, 281s
//, async.apply(someInserts, "#4", N) // N=5000, 350s
, async.apply(someLS, "#1", N) // N=4000, 2.5s
, async.apply(someLS, "#2", N) // N=4000, 8.0s
, async.apply(someLS, "#3", N) // N=4000, 26.5s
, async.apply(someLS, "#4", N) // N=4000, 47.8s then crash (with N=5000 crash happens on second pass)
]);

20
lib/storage.js
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@ -38,13 +38,15 @@ storage.ensureFileDoesntExist = function (file, callback) {
* Flush data in OS buffer to storage if corresponding option is set * Flush data in OS buffer to storage if corresponding option is set
*/ */
storage.flushToStorage = function (filename, callback) { storage.flushToStorage = function (filename, callback) {
// Hate having to do this but I can't seem to make fs.fsync work on Windows, and still don't even know whether fsync can be used on Windows. fs.open(filename, 'w', function (err, fd) {
// See this issue: https://github.com/nodejs/node/issues/3879 if (err) { return callback(err); }
if (process.platform === 'win32' || process.platform === 'win64') { return callback(); } fs.fsync(fd, function (err) {
return callback(err);
fs.open(filename, 'r', function (err, fd) {
if (err) { return callback(err); } if (err) { return callback(err); }
fs.fsync(fd, function (err) { return callback(err); }); fs.close(fd, function (err) { return callback(err); });
});
}); });
}; };
@ -67,10 +69,7 @@ storage.crashSafeWriteFile = function (filename, data, cb) {
, function (cb) { , function (cb) {
storage.exists(filename, function (exists) { storage.exists(filename, function (exists) {
if (exists) { if (exists) {
storage.rename(filename, oldFilename, function (err) { storage.rename(filename, oldFilename, function (err) { return cb(err); });
if (err) { return cb(err); }
storage.flushToStorage(oldFilename, cb); // Ensure filename doesn't exist due to rename atomicity
});
} else { } else {
return cb(); return cb();
} }
@ -79,10 +78,11 @@ storage.crashSafeWriteFile = function (filename, data, cb) {
, function (cb) { , function (cb) {
storage.writeFile(tempFilename, data, function (err) { return cb(err); }); storage.writeFile(tempFilename, data, function (err) { return cb(err); });
} }
//, async.apply(storage.flushToStorage, tempFilename)
, function (cb) { , function (cb) {
storage.rename(tempFilename, filename, function (err) { return cb(err); }); storage.rename(tempFilename, filename, function (err) { return cb(err); });
} }
, async.apply(storage.flushToStorage, filename) //, async.apply(storage.flushToStorage, filename)
, async.apply(storage.ensureFileDoesntExist, oldFilename) , async.apply(storage.ensureFileDoesntExist, oldFilename)
], function (err) { return callback(err); }) ], function (err) { return callback(err); })
}; };

2
test/db.test.js
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@ -2396,7 +2396,7 @@ describe('Database', function () {
describe('Persisting indexes', function () { describe('Persisting indexes', function () {
it('Indexes are persisted to a separate file and recreated upon reload', function (done) { it.only('Indexes are persisted to a separate file and recreated upon reload', function (done) {
var persDb = "workspace/persistIndexes.db" var persDb = "workspace/persistIndexes.db"
, db , db
; ;

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