W7 x64, 100 dialogues test, using Process Explorer by Sysinternals.com
Started FF, IE8 and C with empty pages. The loaded
http://linux.kytomaki.com/jqtest/
FF : starts at 60+ MB , jumps to 81+ MB and stays there for approx 5
min, then drops slowly to 76+ where it stays, Peaked to 104.6 MB. On
repeated test just goes up slightly to 86.3.
IE8 (relevant tab process) : starts with 54.7 MB taken, jumps to 281+
MB (!)
extremely flat strait line plateau graph . Peaked to 284.0 MB. On
reload drops to 60+ .
On 100 dialogue repeat jumps to 240.2.
Chrome (the latest) : starts with 9.1 MB, jumps to 21.3 MB and stays
there.
Peaked to 31.2 MB. On repeated test just goes up slightly to 22.6 MB.
-- DBJ
NOTE: IE8 and Chrome are multi-proc apps, vs FF which is multi-thread.
"Peaked" is private memory set peak since app is started.
On Apr 27, 3:19 pm, Janne Kytömäki <janne.kytom...@gmail.com> wrote:
> I originally reported the problem on another thread (http://
> groups.google.com/group/jquery-dev/msg/52927e5708f3e930), but since
> the thread discussed different sorts of IE leaks which may not be
> related, I'll start a new one for this particular problem.
>
> Problem description from original posting:
>
> --- clip ---
> Not sure if this is related, or if the problem is with jquery, jquery-
> ui, the way we are using them or just IE, but we too are experiencing
> problems with IE and growing memory use. Our application is heavyish,
> uses lots of jquery-ui dialogs, and runs within one html page for long
> times without reloading. We're starting to have problems with IE (7),
> its memory consumption grows quite fast while using the app, and it
> quickly becomes sluggish to use.
>
> I've created a simple test page athttp://linux.kytomaki.com/jqtest/.
> It creates empty jquery-ui dialogs and then immediately destroys them.
> The test uses jquery-svn-trunk rev 6320 and jquery-ui 1.7.1.
>
> Monitoring memory usage from Windows XP task manager:
>
> On IE 7 consumption starts from 38M after loading the page. After
> creating and destroying a dialog 100 times on one run, the consumption
> ends up to 72M. Refreshing the page doesn't seem to have effect on it.
> Minimizing and restoring the IE window takes mem to 10M, after which
> refresh of the page takes it to 44M. Doing another 100 dialog create-
> destroy-cycles takes it to 73M.
>
> With IE 8, mem usage starts from 21M. 100 create-destroy-cycles takes
> it to 55M, so again memory seems to be leaked. This time, page reload
> frees some memory bringing it to 30M, but now the page minimize-
> restore-trick doesn't to do anything. Freeing memory by reload doesn't
> help our case, since the app works within one page that shouldn't be
> reloaded.
> --- clip ---
>
> As suggested in the original thread, I've updated the example (http://
> linux.kytomaki.com/jqtest/) with calls to CollectGarbage() and set IE8
> compatibility mode to IE=edge, but the problem remains (and obviously
> IE8 compatibility mode wouldn't fix the problem on IE7).
>
> This problem might be related to bughttp://dev.jquery.com/ticket/4241,
> also discussed inhttp://dev.jqueryui.com/ticket/4188and more
> recently
> inhttp://groups.google.com/group/jquery-dev/browse_thread/thread/12ab14....
> #4241 hasn't been updated in a while, is it still being investigated?
>
> Anything else we might try to get around this problem?
>
> -Janne
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