[Dojo-interest] FloatingPane in 1.4.2 on IE8 under Win7 has much higher memory use locally than via remote desktop

[Ed]

We've been using the old 0.4.4 version of dojo and have been making efforts
to upgrade to a new version.  However, we ran into some memory usage issues
in our upgraded version, and that led to some investigation.  I'm wondering
if anyone else is seeing similar behavior, or if these are known issues.
When I refer to memory use below, I'm referring to the private bytes
reported by Process Explorer.


Using the test page that comes with the 1.4.2 dojo source
(dojox/layout/tests/test_FloatingPane.html), I see memory use jump
significantly when I load the test page for the FloatingPane.  On my Win7
machine, loading that page causes IE8’s memory to jump roughly 52MB (7 to
59).  In FF3.6 on the same machine, I see a jump of roughly 12MB (30 to 42).
Running in an XP virtual machine, IE8's memory jumps 19MB (13 to 32).


Here’s where it gets a bit peculiar.  When I run from a Windows XP machine
through Remote Desktop to my Win7 machine, IE8’s memory load (still on my
Win7 machine) jumps only 29MB (7 to 36).  Somehow Remote Desktop vs. a local
login is associated with some behavioral difference in IE8 that causes a
23MB difference in memory use.  Even more peculiar, when I’m using Remote
Desktop, leave the IE8 session up, disconnect, and then resume the session
with a direct login to the machine, the memory use stays in the 36MB range.
When I restart IE8 and load the page anew, it’s back up to 59MB.

Does anyone else see the same sort of memory behavior here?  Is it expected
that the memory use for IE8 under Win7 would be so high?

Thanks,
Ed
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.dojotoolkit.org/pipermail/dojo-interest/attachments/20100601/9f22c35f/attachment.htm