Issue 710: Javascript/DHTML performance is poor for first 60 seconds offline
http://code.google.com/p/gears/issues/detail?id=710
New issue report by gregory.houston:
I have an application that uses DHTML windows that can be dragged around.
After, capturing the files locally, going offline, and then refreshing the
page, dragging the DHTML windows becomes incredibly slow and choppy, almost
unusable. This choppiness lasts about 60 seconds. During this first 60
seconds going offline for the first time with a new capture my CPU stays
between 10-20%. After that 60 seconds CPU drops to 0 and the DHTML windows
act as expected. I repeated this several times with the same result. I am
not sure what is going on for those first 60 seconds.
If I load the page offline and do nothing at all, just wait, the CPU
actually stays around 40% for those first 60 seconds. Then it drops to 0
and the DHTML windows work fine.
So for the first 60 seconds the CPU is at 10-20% if I am working in the
page, and it is at about 40% if I am doing nothing to the page. In either
case, after that 60 seconds CPU usage drops to 0%, more like 0% with 1-2
percent pulses here and there, and then the DHTML windows work fine.
Note that dragging the DHTML windows bumps CPU usage up to about 50%,
regardless of being online or off.
What version of the product are you using? On what operating system?
Current version:
0.4.15.0;official;opt;win32;firefox
XP SP3
2.4 GHz Core 2 Duo
3.25 GB RAM (4, but can't use it all on a 32bit system)
Issue attributes:
Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
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