AFAIK There's nothing wrong with javascript. The problem is that
creating XMLHttpRequest every time causes memory leak in IE.
People tend to reuse one instance of xmlhttprequest, but that does not
suffice here, i guess, therefore I suggested xmlhttprequests instances
pooling.
I tried to reuse one instance of xmlhttprequest and the leak was no
longer there. At least with the test application. (The one in this thread).
The only thing when you are "reusing" XmlHttpRequests is that you must
call transport.open before you assign transport.onreadystate = ...
(some weird IE related thing)
-Matej
Igor Vaynberg wrote:
i looked through the javascript but nothing jumped out at me. did you
notice anything cause im stumped.
-Igor
On 4/12/06, *Matej Knopp* < [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> wrote:
Yeah, it is. However, it's much smaller. But still, 10-15 kb per
request.
-Matej
Igor Vaynberg wrote:
> is the leak still there if you turn off the ajax debug mode in
> IAjaxSettings?
>
> -Igor
>
>
> On 4/12/06, *Matej Knopp* < [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]> <mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>>> wrote:
>
> Ari Suutari wrote:
> >> need several requests at the same time. So maybe pooling of
> >> XmlHttpRequest(s) could work...
> >
> > Btw, does dojo use pooling (since there was no leak
with it) ?
> > Maybe it would make sense to check how they are getting
around
> > this.
> >
> > Ari S.
> >
> Don't know, might be worth checking. But dojo codebase is
quite big and
> the code little hard to read, mostly because dojo handles a
lot of other
> things (back button support, etc.)
>
> -Matej
> >>
> >> -Matej
> >>
> >> Ari Suutari wrote:
> >>> Hi,
> >>>
> >>> There is a browser-side memory leak in wicket ajax stuff
when used
> >>> with internet explorer. We discovered it when changing our
> application
> >>> from wichet+dojo to wicket+wicket-ajax.
> >>>
> >>> Memory leak occurs only if wicket-ajax is used in IE.
With dojo,
> >>> there is on leak. Also, in firefox, neither solution leaks.
> >>>
> >>> There is a simple example available at
> >>>
> >>>
http://download.syncrontech.com/public/wicketajaxleak.zip
<http://download.syncrontech.com/public/wicketajaxleak.zip>
> <http://download.syncrontech.com/public/wicketajaxleak.zip>
> >>>
> >>> It just displays a number, increments it and displays it
again
> >>> using ajax.
> >>>
> >>> There is also a memory usage graph which has data from
> >>> dojo and wicket-default ajax cases, from that it is easy
> >>> to see how differenty these implementations behave.
> >>>
> >>> http://download.syncrontech.com/public/wicketajax.gif
<http://download.syncrontech.com/public/wicketajax.gif>
> >>>
> >>> These runs were done agains wicket 1.2-beta3.
> >>> This is a rather nasty problem for us, since we have a lot
> >>> of pages, which update themselves very frequently based on
> >>> data coming from automation systems.
> >>>
> >>> We did some looking around in wicket-ajax.js but didn't
> >>> find anything obvious.
> >>>
> >>> Ari S.
> >>>
> >>>
> >>>
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