Re: [artworks] processor usage
- From: Martin Wuerthner <lists@xxxxxxxxxxxxxxx>
- To: artworks@xxxxxxxxxxxxx
- Date: Thu, 31 Dec 2009 16:02:30 +0100
In message <cab463d150.jr@xxxxxxxxxxxxxxxxxxxxx>
rickman@xxxxxxxxxxxxx wrote:
> Martin Avison's Task Usage program shows that ArtWorks uses about 15%
> of the CPU even when it is just sitting on the iconbar with no windows
> open. It is polling the Wimp about 800 times a second.
Yes, ArtWorks asks for Null events. Effectively, it only uses any
measurable amount of CPU time if nothing else uses the CPU, so the 15%
figure does not really mean anything. Admittedly, there may be quite a
significant slowdown if you have a large file loaded in ArtWorks on a
system without lazy task swapping enabled.
> The only other program that uses CPU all the time is HID. As it is
> responsible for mouse and keyboard this is not unreasonable.
> What is ArtWorks watching and waiting for?
ArtWorks has various features that require background processing,
e.g., the "Show coordinates" window. There are internal technical
reasons why ArtWorks has to ask for Null events all the time even if
these features are not in use. Various other programs do this as well,
e.g., Impression.
Martin
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