| GEF 3.1 Performance [message #187027] |
Fri, 08 July 2005 02:08  |
Eclipse User |
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Originally posted by: blair.wheadon.NOSPAMbusinessobjects.com
Hi,
I upgraded my RCP app to GEF 3.1 and it is considerably slower than GEF 3.0.
I'm creating a reasonably large number of edit parts & figures (about 3000
of each) to create a stock market chart. There were no performance issues
in GEF 3.0. Before I drill into figuring out where the issue could be, do
you have any suggestions or known changes that could affect paint and
scrolling performance for large numbers of parts & figures?
Thanks, Blair
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| Re: GEF 3.1 Performance [message #187199 is a reply to message #187160] |
Fri, 08 July 2005 16:16  |
| Eclipse User |
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Originally posted by: none.us.ibm.com
When you scroll, the majority of the page is copied up using a bitblt
operation, and only the small exposed region is actually painted. If for
some reason the entire canvas gets painted, it takes much longer.
Try loading Draw2d as source, and un-commenting the println in
DeferredUpdateManager#repairDamage(), to see how much area is being painted.
Then, try to find out why everything is painting :-) or open a bug if you
can reproduce in an example.
"BOBJProduct" <blair.wheadon@NOSPAMbusinessobjects.com> wrote in message
news:dame41$8q3$1@news.eclipse.org...
> Nope - just scrolling with the scrollbar by clicking on the scrollbar
> arrows
> (ie the smallest increment of horizontal scrolling).
>
> I am hooking the RangeModel.PROPERTY_VALUE event to do some stuff when the
> scrollbar value changes - but the code is the same in both 3.0 and 3.1.
>
> I'll drill into my code - I suspect I'm doing something I shouldn't be,
> and
> got away with in in 3.0.
>
> Thanks, Blair
>
> "Randy Hudson" <none@us.ibm.com> wrote in message
> news:dam5id$u4c$1@news.eclipse.org...
>> What is slower, scrolling with the mousewheel?
>>
>> "BOBJProduct" <blair.wheadon@NOSPAMbusinessobjects.com> wrote in message
>> news:dal59k$j62$1@news.eclipse.org...
>> > Hi,
>> >
>> > I upgraded my RCP app to GEF 3.1 and it is considerably slower than GEF
>> > 3.0.
>> > I'm creating a reasonably large number of edit parts & figures (about
> 3000
>> > of each) to create a stock market chart. There were no performance
> issues
>> > in GEF 3.0. Before I drill into figuring out where the issue could be,
> do
>> > you have any suggestions or known changes that could affect paint and
>> > scrolling performance for large numbers of parts & figures?
>> >
>> > Thanks, Blair
>> >
>> >
>>
>>
>
>
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