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https://issues.apache.org/jira/browse/GUACAMOLE-884?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16940602#comment-16940602
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Mike Jumper commented on GUACAMOLE-884:
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Yes, I did as well. In my case, Firefox stayed level at 7.7 MB. Either way,
that's not really the point. The facts are as follows:
* There exists a bug in some browsers where instances of {{Image}} will leak.
* In cases where this leak occurs, it is the memory of the browser/tab process
that increases. The JavaScript heap usage remains unaffected.
* There are ways to draw received image data without {{Image}}. In the past,
tests have shown those methods to be significantly slower than {{Image}} and
data URIs.
With the availability of {{createImageBitmap()}}, I am checking whether this is
now doable without a performance hit, in which case we can do that and simply
fall back to data URIs if {{createImageBitmap()}} is unavailable. If there _is_
a performance hit, then we cannot make this change.
Either way, as it can be shown that there is no leak within the JS, I highly
recommend reporting the leak itself to the groups maintaining the affected
browsers.
> Canvas Render Browser Memory Leakage
> ------------------------------------
>
> Key: GUACAMOLE-884
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-884
> Project: Guacamole
> Issue Type: Bug
> Components: guacamole-common-js
> Affects Versions: 1.0.0
> Environment: guacamole 1.0
> Reporter: jianfeng chen
> Priority: Minor
> Attachments: 001.png, CorrectCode.png, firefox.png, guac-js-heap.png,
> pysh.py
>
>
> In SSH protocol, executing Python scripts will constantly render and refresh
> the interface, resulting in a gradual increase in browser memory, and finally
> browser crash.
> The script content is in the attachment.
> Execute script instructions：python pysh.py 1024 1
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