[Webkit-unassigned] [Bug 160650] New: Memory leak when displaying large files from filing system

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Sun Aug 7 17:00:55 PDT 2016


            Bug ID: 160650
           Summary: Memory leak when displaying large files from filing
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Macintosh
                OS: Unspecified
            Status: NEW
          Severity: Major
          Priority: P2
         Component: Images
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: techsupport at 4d.net.au

Created attachment 285542
  --> https://bugs.webkit.org/attachment.cgi?id=285542&action=review
Screenshot of Activity Monitor

If you display several large files in Safari/Webkit loaded from the local filing system (e.g.. file:///Users/waynestewart/Desktop/sample_1.jpg) the memory for these is not released if you load a subsequent image in the same tab/window or reread the image.
The memory is released when you close the tab/window however.

Steps to Reproduce:
1. Get a large image or pdf (note pdfs are better as you can get some really large ones!) from finder and load in Webkit
2. Drag another image or pdf into the address area so it loads
3. Repeat with more images/pfds
4. Alternatively you can just have one image/pdf and hit reload (Command R) multiple times.
5. Look at Memory usage in Activity Monitor

Expected Results:
Memory usage should be appropriate for the currently loaded image

Actual Results:
Memory usage continues to increase

OS X 10.11.5 (15F34)

16GB RAM System Ram

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