Opened 16 years ago
Closed 12 years ago
#2521 closed Bug (wontfix)
Memory leak issue
| Reported by: | siamakh | Owned by: | |
|---|---|---|---|
| Priority: | Must have (possibly next milestone) | Milestone: | |
| Component: | General | Version: | FCKeditor 2.3.2 |
| Keywords: | Cc: |
Description
I am experiencing a memory leak on the client side. I have installed fck editor 2.6.3. I created the below test.html under fckeditor/html folder. Please try this and click on addFCk and removeFCK (in the same order) for several times and notice that the memory used by the internet browser grows more and more.
<!DOCTYPE html PUBLIC "-W3CDTD XHTML 1.0 TransitionalEN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head>
<title>FCKeditor - Sample</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="robots" content="noindex, nofollow" /> <link href="../sample.css" rel="stylesheet" type="text/css" /> <script type="text/javascript" src="../../fckeditor.js"></script>
</head> <body>
<p><a href="javascript:;" onclick="addFCK();">Add FCK</a></p>
<p><a href="javascript:;" onclick="removeFCK();">Remove FCK</a></p>
<div id="myDiv">
This sample displays a normal HTML form with an FCKeditor with full features enabled.
</div> <hr /> <script type="text/javascript"> <!-- Automatically calculates the editor base path based on the _samples directory. This is usefull only for these samples. A real application should use something like this: oFCKeditor.BasePath = '/fckeditor/' ; '/fckeditor/' is the default value. function addFCK() {
var sBasePath = document.location.href.substring(0,document.location.href.lastIndexOf('_samples')) ;
var oFCKeditor = new FCKeditor( 'FCKeditor1' ) ; oFCKeditor.BasePath = sBasePath ; oFCKeditor.Height = 300 ; oFCKeditor.Value = '<p>This is some <strong>sample text<\/strong>. You are using <a href="http://www.fckeditor.net/">FCKeditor<\/a>.<\/p>' ;
var newdiv = document.createElement('div'); newdiv.setAttribute('id','fckDiv'); newdiv.innerHTML = oFCKeditor.CreateHtml() ;
var myDiv = document.getElementById('myDiv'); myDiv.appendChild(newdiv);
}
function removeFCK() {
var myDiv = document.getElementById('myDiv'); var fckDiv = document.getElementById('fckDiv'); myDiv.removeChild(fckDiv);
} --> </script> <br />
</body> </html>
Attachments (1)
Change History (8)
comment:1 Changed 16 years ago by
| Milestone: | → FCKeditor 2.6.4 |
|---|---|
| Summary: | memory leak issue → Memory leak issue: memory not released after setting div.innerHtml to fckeditor.CreateHtml() and then removing the div |
| Version: | → FCKeditor 2.6.3 |
comment:2 Changed 16 years ago by
| Milestone: | FCKeditor 2.6.4 |
|---|
comment:3 Changed 16 years ago by
| Keywords: | Pending added |
|---|---|
| Priority: | High → Normal |
| Summary: | Memory leak issue: memory not released after setting div.innerHtml to fckeditor.CreateHtml() and then removing the div → Memory leak issue |
Changed 16 years ago by
comment:4 Changed 16 years ago by
I tried the modified test.html but the problem still persists: memory usages increases after each addFCK and removeFCK. Note that this problem happens on both IE and FF. (I tried with IE7 and FF3)
comment:5 Changed 16 years ago by
| Keywords: | Confirmed added; Pending removed |
|---|---|
| Version: | FCKeditor 2.6.3 → FCKeditor 2.3.2 |
I made some tests. Results of FCKeditor 2.6.3 test:
IE7 Vista32 (1GB RAM) Empty 9MB 1. 21,0 (+12 MB) 2. 21,8 (+0,8 MB) 3. 26,6 (+4,8 MB) 4. 27,3 (+0,7 MB) 5. 26,9 (-0,4 MB) 6. 27,8 (+0,9 MB) 7. 28,2 (+0,4 MB) 8. 28,4 (+0,2 MB) 9. 28,4 (+0MB) 10. 28,5 (+0,1 MB) 11. 28,5 (+0 MB) 12. 28,8 (+0,4 MB) FF3 Vista32 (1GB RAM) Empty 29MB 1. 34,0 (+5,0 MB) 2. 37,0 (+3,0 MB) 3. 41,1 (+3,1 MB) 4. 44,1 (+3,0 MB) 5. 42,2 (-1,9 MB) 6. 43,0 (+0,8 MB) 7. 46,0 (+3,0 MB) 8. 47,3 (+2,3 MB) 9. 49,3 (+2,0 MB) 10. 58,4 (+9,1 MB) 11. 58,5 (+0,1 MB) 12. 61,0 (+2,5 MB) FF3+Firebug Vista32 (1GB RAM) Empty 36MB 1. 42,0 (+6,0 MB) 2. 49,1 (+7,1 MB) 3. 51,0 (+1,9 MB) 4. 58,6 (+7,6 MB) 5. 62,5 (+3,9 MB) 6. 72,4 (+9,9 MB) 7. 72,8 (+0,4 MB) 8. 74,8 (+2,0 MB) 9. 75,5 (+0,7 MB) 10. 75,5 (+0 MB) 11. 79,9 (+4,4 MB) 12. 89,2 (+9,8 MB)
comment:6 Changed 15 years ago by
| Priority: | Normal → High |
|---|
This is a rather major issue. wonder if anyone will address it?
comment:7 Changed 12 years ago by
| Resolution: | → wontfix |
|---|---|
| Status: | confirmed → closed |
FCKeditor was retired and is no longer supported. All active development was moved to its successor, CKEditor 3.x, that is a fully mature and far superior product. We recommend you upgrade as soon as possible since this issue is no longer a problem in current code base.
Confirmed in IE7 but I think you should clear variables in removeFCK(). I attached modified test.html. Please try it and let me know if you have any problems.