Starting a Java applet drives IE8 into busyloop

[Michael Moser]

I have the odd effect that starting a Java applet drives IE8 into a busyloop

(i.e. one core starts going 100% busy).



Initially I thought, it's my applet, but my applet is NOT the culprit and it

is NOT busy-looping - I verified that by inserting lots of println()'s. When

it works, there are short peaks of process "javaw.exe" being active and the

println's show up on the Java console, but those are always over after at

most a few seconds. Next I had the suspicion, that some java script code

that surrounded my applet was faulty, but I removed everything else and the

page now reads:

---------------------





















---------------------

i.e. it contains ONLY the applet, nothing else and still - the process

"iexplore.exe" goes 48-50% busy (one a dual-core machine, i.e. one core is

100% busy as one can show by setting the affinity of the process to one

core) the very moment the page containing the applet is loaded. And it stays

at that level until one kills it.



What could cause this busy-looping? Is there some tool or plugin, to observe

and monitor this?



Michael

 

[PA Bear [MS MVP]]

Developer-specific resources include:



MSDN IE Development Forum (post such questions here instead)

http://social.msdn.microsoft.com/Forums/en-US/iewebdevelopment/threads



Tip: When posting in Developer forums, always include a link to your web

site or test pages in your first post.



IE Developer Center

http://msdn.microsoft.com/en-us/ie/default.aspx



Learn IE8

http://msdn.microsoft.com/en-us/ie/aa740473.aspx



HTML and DHTML Overviews and Tutorials

http://msdn.microsoft.com/en-us/library/ms537623.aspx and



Cascading Style Sheets (CSS)

http://msdn2.microsoft.com/en-us/ie/aa740476.aspx



Expression Web SuperPreview for Internet Explorer (free, stand-alone visual

debugging tool for IE6, IE7, and IE8)

http://www.microsoft.com/downloads/...FamilyID=8e6ac106-525d-45d0-84db-dccff3fae677



Expression Web SuperPreview Release Notes

http://www.microsoft.com/expression/products/Web_SuperPreviewReleaseNotes.aspx



Validators:

http://validator.w3.org/

http://jigsaw.w3.org/css-validator/





Michael Moser wrote:

> I have the odd effect that starting a Java applet drives IE8 into a

> busyloop

> (i.e. one core starts going 100% busy).

>

> Initially I thought, it's my applet, but my applet is NOT the culprit and

> it

> is NOT busy-looping - I verified that by inserting lots of println()'s.

> When

> it works, there are short peaks of process "javaw.exe" being active and

> the

> println's show up on the Java console, but those are always over after at

> most a few seconds. Next I had the suspicion, that some java script code

> that surrounded my applet was faulty, but I removed everything else and

> the

> page now reads:

> ---------------------

>

>

>

>

>

>

>

>

>

>

> ---------------------

> i.e. it contains ONLY the applet, nothing else and still - the process

> "iexplore.exe" goes 48-50% busy (one a dual-core machine, i.e. one core is

> 100% busy as one can show by setting the affinity of the process to one

> core) the very moment the page containing the applet is loaded. And it

> stays

> at that level until one kills it.

>

> What could cause this busy-looping? Is there some tool or plugin, to

> observe

> and monitor this?

>

> Michael