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POAngular.js memory leak with ngRepeat on polled data
 

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  1. POAngular.js memory leak with ngRepeat on polled data
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    <p>I've got what seems to be a memory leak in my angular.js app. Basically, the page consists of a table of information that is updated every five seconds from the JSON-encoded result of an AJAX call. I've created a simplified jsfiddle version here: <a href="http://jsfiddle.net/alalonde/TtGXW/6/" rel="nofollow">http://jsfiddle.net/alalonde/TtGXW/6/</a> </p> <p>The controller:</p> <pre><code>function HostController($scope, $timeout, Data) { $scope.encoders = Data.load(); $scope.refreshInterval = 5; $scope.reload = function () { $scope.encoders = Data.load(); }; $timeout(function doReload() { $scope.reload(); $timeout(doReload, $scope.refreshInterval * 1000); }, 5000); } </code></pre> <p>A snippet of the template:</p> <pre><code>&lt;table class="table table-striped table-bordered" ng-controller="HostController"&gt; &lt;tr&gt; &lt;th&gt;Status&lt;/th&gt; &lt;th&gt;... &lt;/tr&gt; &lt;tr ng-repeat="enc in encoders"&gt; &lt;td&gt; &lt;div&gt;{{ enc.name }}&lt;/div&gt; &lt;div ng-show="enc.version"&gt; v{{ enc.version.major }}.{{ enc.version.minor }}-{{ enc.version.rev }} &lt;span ng-show="enc.version.user"&gt;- {{ enc.version.user }}&lt;/span&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </code></pre> <p>When taking a heap snapshot in Chrome every minute or so, the memory usage rises slightly each time. I've applied Igor Minar's fix to my local angular.js (<a href="https://github.com/angular/angular.js/commit/bd524fc4e5fc0feffe85632a7a6560da6bd9b762" rel="nofollow">https://github.com/angular/angular.js/commit/bd524fc4e5fc0feffe85632a7a6560da6bd9b762</a>) which helped a lot, but the memory usage is still inexorably creeping up. </p> <p>Any hints on using the Chrome memory profiler with angular.js would be appreciated.</p>
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    1. COI can't reproduce the mem leak in jsfiddle. I left the app running for a while and all I see is the usual GC pattern with memory being released once enough of garbage has accumulated. Does the jsfiddle actually leak on your machine? Can you provide browser version info?
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    2. COAlso please file a bug at https://github.com/angular/angular.js/issues if the issue is indeed reproducible.
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    3. COHere is a [screenshot of my chrome memory profiler](http://files.boxelderweb.com/angular-chrome-memory-profiler.png). I changed the refreshInterval to 1 second to expedite things. There is a 0.47MB increase over 15 minutes or so. Expanding the (array) listing, it seems all the HTML elements beneath and including the <tr> are leaking. @IgorMinar can you verify? If so I will file a bug.
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