[compiz] Slow Scrolling in Compiz

[David C. Rankin]

Clemens Eisserer wrote:
> Well compiz adds some overhead, but without further description about
> your settup there's nothing anybody can say/do.
> 
> lg Clemens
> 
> 2008/1/29, David C. Rankin <drankinatty at suddenlinkmail.com>:
>> Listmates,
>>
>>         Hopefully this is a compiz only question. Using the mouse wheel to
>>  scroll down web pages seems to be much slower in compiz than in kde. It
>>  also affects scrolling through long directories in konqueror (ex:
>>  /usr/share/doc/packages) but to a lesser extent than web content.
>>  Is there any setting, fix or workaround that might help?
>>

Sorry Clemens,

	I should have included the specifics. The system is a Toshiba P35, P4 
3.3GHz, 2G RAM, ATI Mobility Radeon 9600/9700 series running openSuSE 
10.3 with the ATI 8.45.5 driver.

	I don't think it is a memory overhead issue. I have looked closely at 
this with top/free -tm and compiz adds no more that 20M of memory 
overhead which wouldn't be an issue here.

	The slowdown in scrolling I am talking about is by a factor of 2-4 
times slower than without compiz. With kwin, rolling the mouse wheel to 
scroll web pages or konqueror directories results in immediate and crisp 
scrolling of content either up or down depending on wheel rotate 
direction. With compiz there is a notable delay in the time between 
wheel input and scroll response (on the order of milliseconds ~ 400 or 500).

	The scroll delay problem is much improved with the latest 8.45.5 driver 
with the delay between wheel input and scroll decreasing greatly, but it 
is still noticeable. Testing now in response to your post, this is much 
improved over the 8.43 and earlier drivers. This leads me to suspect it 
may be more of a driver issue than a compiz issue. I will test with the 
8.47 driver later today or tomorrow and report back.

-- 
David C. Rankin, J.D., P.E.
Rankin Law Firm, PLLC
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