I've reproduced the problem using the files you sent me.
[1] I've set the memory limit to 1024Mb (mem="-Xss1m -Xmx1024m"), just
in case.
[2] I've opened and closed the document twice. The second time, it
lasted forever, my Linux box, not XXE, not Java, stopped responding and
after a while (and a lot of disk trashing), Linux killed XXE!
The diagnostic is simple: *huge* consumption of memory.
* Out of memory problems are not reported when loading images (because
this occurs so easily and so often in this case).
* Your document contains 13 *small* images *scaled* *up* to
~2000x2000pixels ==> The document view needs 13x2000x2000x4 bytes =
~198Mb to display your images (1 RGBA pixel = 4 bytes).
* When you close your document and reopen it, for a brief moment you
have the old document view and the new one both present in memory (XXE
is not optimized to do better than this) ==> huge consumption of memory.
The cure is very simple (I've tested this: after resetting -Xmx128m, I
managed to open and close your document 25 times in a row with a steady,
reasonable, memory consumption).
In the CSS replace:
---
content: image(attr("xlink|href"), attr(Width), attr(Height), default,
icon(no-image));
---
by something like:
---
content: image(attr("xlink|href"), -400, -400, default, icon(no-image));
---
See http://www.xmlmind.com/xmleditor/_distrib/doc/csssupport/image.html
Note that 13 ~2000x2000pixels images are totally useless when displayed
as is on a computer screen (even a top notch computer screen).
Benoit Maisonny wrote:
>
> XXE 3.6.0 stops responding after a while and I can reproduce the
> problem. Actually, maybe it does respond but it's using 100% CPU and
> takes a _very_ long time to respond.
>
> To reproduce the issue, I open and close a certain document (120kB) on
> the local file system. After a few of times (3 to 5, it's not always the
> same), the open or close action will take a _very_ long time to
> complete, or maybe never complete at all: I don't always have the
> patience to wait. Most of the time, I just kill XXE after a couple of
> minutes and try again. Sometimes, a simple kill will not be enough or
> will take too long to register, so I do kill -9.
>
> If I don't close the file and just work on it, I don't see this issue
> (but I don't work long on the same files).
>
> I tried this on various JVMs (1.5 and 6; 32 and 64 bits) and 3 different
> computers, on Linux (I can't remember if I tested this on Windows or
> not). The command line has "-Xss1m -Xmx512m". I tried larger values
> without seeing any improvements.
>
> Not sure whether memory is an issue, as I don't get any exception, but
> this document is using a pretty large configuration: 210kB of DTD files,
> 120kB of CSS, a schematron validation, among other things. No custom
> Java commands, though.
>
> Can you help? Shall I provide more info? A jmap memory dump, maybe?
