[ jEdit-devel ] [ jedit-Bugs-1577203 ] Memory leaks by changing the display mode

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Bugs item #1577203, was opened at 2006-10-14 23:31
Message generated for change (Comment added) made by k_satoda
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Kazutoshi Satoda (k_satoda)
Assigned to: Nobody/Anonymous (nobody)
Summary: Memory leaks by changing the display mode

Initial Comment:
In Windows XP, when the display mode is changed, size
of Java heap memory increase about 5-10 MB. Repeating
the change leads to OutOfMemory exception.

This was found on a machine which uses a screen saver
which changes the display mode on start up (and
restores it on returning to desktop).

This problem is reproducable in jEdit trunk r7505.


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>Comment By: Kazutoshi Satoda (k_satoda)
Date: 2006-10-21 15:35

Message:
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user_id=1483238

I'm using JRE 1.5.0_08. I mean by "display mode" the
modes such as the color depth or the screen resolusion.
So I think editing modes is not related.

I tried to look the problem you mentioned.
I used [Utilities] > [Troubleshooting] >
[Reload Edit Modes] with JVMStats plugin. But I
couldn't see a memory leak. The used memory increases
after reloading, but it can recover to same or less
value by pressing [Collect garbage] 1-3 times.

I think it's better to submit the problem as another
bug with an actual reproduction recipe.

I would like to see your patch committed in because
I had seen that recursive IMPORTs made jEdit hang up.
But unfortunately I scraped the actual mode file before
thinking to submit it as a bug.


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Comment By: daniel hahler (blueyed)
Date: 2006-10-20 03:36

Message:
Logged In: YES 
user_id=663176

I've experienced a similar/related problem, when reloading 
editing modes - jEdit seems to consume more memory each 
time until it hangs sometime.

What Java version are you using? (I've experienced it with 
1.5 and 1.6-beta2).

Could you try the patch at 
http://sourceforge.net/tracker/index.php?func=detail&aid=1572746&group_id=588&atid=300588 
and see if it solves the problem, at least a bit?

What exactly do you mean with "changing the display mode"? 
Going from e.g. "text" to "html"? This would not happen 
due to a screensaver, would it?

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