Scroll performance

Meol · Post by **Meol** » May 8th, 2008, 9:29 am

i'm having no issues with those sites:

built-in smooth-scrolling disabled;
using Yet Another Smooth Scrolling extension;

don't forget that flaws in the programming of the website itself may cause problems, it's not always FF's fault;
did you try with extensions disabled? - that's a likely error-source too;

Recall · Post by **Recall** » May 8th, 2008, 9:41 am

Smooth scrolling on fixed elements will be fixed by compositor, which is top priority for Firefox 4.

https://bugzilla.mozilla.org/show_bug.cgi?id=374980

Faruk · Post by **Faruk** » May 8th, 2008, 10:06 am

This bug not fixed yet

njuzovi · Post by **njuzovi** » May 8th, 2008, 12:04 pm

Evanlec wrote:I can confirm this as well running 3.0b5 on Arch Linux x86_64

Another site for you guys to try, straight from mozilla itself:

https://addons.mozilla.org/en-US/firefox/search?q=color

or basically any add-on search there that yields more than 10 results...

so no one's paying any attention to this bug? this seems like a deal-breaker to me, I thought it was something wrong with my system...

Confirming. Disabling images helps in this case also.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9pre) Gecko/2008050706 Minefield/3.0pre

Faruk · Post by **Faruk** » May 10th, 2008, 8:17 am

Anything new ?

njuzovi · Post by **njuzovi** » May 10th, 2008, 8:19 am

In latest nightly scrolling seems to be even slower...

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9pre) Gecko/2008051006 Minefield/3.0pre

Faruk · Post by **Faruk** » May 10th, 2008, 8:26 am

njuzovi wrote:In latest nightly scrolling and seems to be even slower...

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9pre) Gecko/2008051006 Minefield/3.0pre

Thank you for information.

This is bad...!

Recall · Post by **Recall** » May 10th, 2008, 8:39 am

as i ALREADY MENTIONED this won't be fixed til compositor lands.

njuzovi · Post by **njuzovi** » May 10th, 2008, 9:57 am

Recall wrote:as i ALREADY MENTIONED this won't be fixed til compositor lands.

I am aware of this but on my site www.fm-zagorje.org there aren't any fixed elements. I'm trying to find out what's causing poor scrolling on this site (scrolling is smooth if I disable, for example, JPEG backgrounds).

Recall · Post by **Recall** » May 10th, 2008, 3:27 pm

njuzovi wrote:
Recall wrote:as i ALREADY MENTIONED this won't be fixed til compositor lands.

I am aware of this but on my site www.fm-zagorje.org there aren't any fixed elements. I'm trying to find out what's causing poor scrolling on this site (scrolling is smooth if I disable, for example, JPEG backgrounds).

Runs perfect here, no lag?

Spacepoint · Post by **Spacepoint** » May 10th, 2008, 4:05 pm

I think scroll perf is a big issue on old machines, I tested on a PIII 933mhz, suggests to me that the rendering system is ineffiecient.

njuzovi · Post by **njuzovi** » May 12th, 2008, 2:31 pm

Spacepoint wrote:I think scroll perf is a big issue on old machines, I tested on a PIII 933mhz, suggests to me that the rendering system is ineffiecient.

Yes, I see this problem on Celeron 1.7GHz and Centrino 1.5GHz (in Firefox 2.0 there's no such problem)...

Well, this bug will resolve itself by time

Evanlec · Post by **Evanlec** » May 12th, 2008, 8:28 pm

I'm experiencing this on a 3.4Ghz Pentium Dual Core, 2GB Ram, Linux x86_64 kernel 2.6.24

RNiK · Post by **RNiK** » May 13th, 2008, 12:53 am

Omega X wrote:Bug 90198 [Core:GFX] – Fixed background makes scrolling painfully slow

I have updated the testcase list for this bug ==> https://bugzilla.mozilla.org/show_bug.cgi?id=90198#c199

@njuzovi - http://www.fm-zagorje.org/ WFM

sysKin · Post by **sysKin** » May 13th, 2008, 1:53 am

I've been thinking, is scrolling (of any kind) part of PGO instrumentation?

Perhaps adding fixed-background scrolling to the run would improve things.