When scrolling in forums, Opera needs 0.5 seconds before scrolling up
Thomas Lindemans
poses no problem at all, but scrolling up (even after one scroll down
cycle) takes about 0.5 seconds. The mouse pointer changes to the hour
glass. Has anybody has the same problem? I cannot take a screenshot (my
reflexes are not quick enough ;-) ) but this is the best way I can
describe the problem.
--
Thomas Lindemans
For direct mail to me, leave out the LEAVEOUT part in my address
Thomas Lindemans
<thomasl...@leaveout.gmail.com> wrote:
> When scrolling large sites (much vertical scrolling to do), scrolling
> down poses no problem at all, but scrolling up (even after one scroll
> down cycle) takes about 0.5 seconds. The mouse pointer changes to the
> hour glass. Has anybody has the same problem? I cannot take a screenshot
> (my reflexes are not quick enough ;-) ) but this is the best way I can
> describe the problem.
>
And I would like to add to that that, when having something like 15 tabls
open, after a while, simply scrolling up with the mousewheel activates the
fast forward function rather than the scroll up. If I scroll once with the
scrollbar, the normal scroll function works again with the mouse wheel.
Lee Harvey
> When scrolling large sites (much vertical scrolling to do), scrolling
> down
> poses no problem at all, but scrolling up (even after one scroll down
> cycle) takes about 0.5 seconds. The mouse pointer changes to the hour
> glass. Has anybody has the same problem? I cannot take a screenshot
> (my
> reflexes are not quick enough ;-) ) but this is the best way I can
> describe the problem.
Got a URL? Which Opera version? Which OS? Hardware specs?
Anyhow, some things that should help (assuming Opera 8.0):
- Disable smooth scrolling (Preferences> Advanced> Browsing> disable
Smooth scrolling)
- Disable GIF animation (F12> disable GIF animation)
- Try temporarily disabling images altogether ([Shift]+i) if you need to
scroll over many pages at once.
- If the page has a fixed background image, try removing it by: a)
switching to User mode ([Shift]+g), or b) use a JavaScript bookmarklet
or User JavaScript to remove it.
- Ensure your zoom level is at 100%, and that smooth zooming of images
is disabled. Open profile\opera6.ini file, then change this setting:
[Multimedia]
Interpolate Images=0
I'm sure some memory tweaks could also help.
Enjoy.
Thomas Lindemans
wrote:
> Got a URL? Which Opera version? Which OS? Hardware specs?
>
> Anyhow, some things that should help (assuming Opera 8.0):
>
> - Disable smooth scrolling (Preferences> Advanced> Browsing> disable
> Smooth scrolling)
>
> - Disable GIF animation (F12> disable GIF animation)
>
> - Try temporarily disabling images altogether ([Shift]+i) if you need to
> scroll over many pages at once.
>
> - If the page has a fixed background image, try removing it by: a)
> switching to User mode ([Shift]+g), or b) use a JavaScript bookmarklet
> or User JavaScript to remove it.
>
> - Ensure your zoom level is at 100%, and that smooth zooming of images
> is disabled. Open profile\opera6.ini file, then change this setting:
>
> [Multimedia]
> Interpolate Images=0
>
> I'm sure some memory tweaks could also help.
>
> Enjoy.
>
Thanks, sorry about forgetting the HW and Opera specs. I'm using 8.0, have
sounds, voice, java, and gif animation disabled. Only smoothscrolling was
on. Zoom level was at 100%
URLs:
http://gimp-savvy.com/BOOK/
http://my.opera.com/forums/
It's in general sites where there's a huge amount of vertical scrolling to
do.
History preferences:
Memory cahe: 20 mb
Disk cache: 400 mb
Bengt Cyren
time for Opera to just figure out whether something is in there, when the
cache it self 400 MB. Disks are certainly fast compared to a modem, but may
not come out that favourable when compared to broadband. Set your disc
cache
to, say 16 MB and try again.
Now, honestly I doubt this is your problem. But make your cache smaller
anyway. Or convince me that 400 MB is a good idea. Frankly I've never tried
something like that. Given the average file size in the cache (5 kB) your
cach should have something like 50.000 files in it. Surely it takes time to
find something in there.
/Bengt Cyren
I don't think there is any
point in having such a big cache
Lee Harvey
> Thanks, sorry about forgetting the HW and Opera specs. I'm using 8.0,
> have sounds, voice, java, and gif animation disabled. Only smoothscrolling
> was on. Zoom level was at 100%
Did disabling Smooth Scrolling help a bit?
Both work fine for me in 8.0
> It's in general sites where there's a huge amount of vertical
> scrolling to do.
Assuming you're running Windows, perhaps you should visit the Control Panel
and adjust the scroll wheel settings for your Mouse. Sometimes, 1-line
scrolling is the default; which is horrible. On one PC here, my MS mouse is
set to scroll 2 lines at a time; whereas, on another PC, I have my Logitech
mouse set to scroll 3 lines at a time. Give that a try.
> History preferences:
> Memory cahe: 20 mb
> Disk cache: 400 mb
As Bengt mentions, 400MB seems a bit high -- but not particularly related to
your scrolling issue above. Something between 20MB and 200MB should
suffice. If 400MB is kept, I highly recommend "Empty on exit" (via
Preferences> Advanced> History> Empty on exit)
HTH
Thomas Lindemans
wrote:
> Thomas Lindemans wrote:
>> Thanks, sorry about forgetting the HW and Opera specs. I'm using 8.0,
>> have sounds, voice, java, and gif animation disabled. Only
>> smoothscrolling
>> was on. Zoom level was at 100%
>
> Did disabling Smooth Scrolling help a bit?
>
Well, I did all suggestions made by everybody who replied (decreasing disk
cache, smooth scrolling, etc...) and now it works flawlessly. I don't know
what did the trick though.
This makes me wonder though why smooth scrolling is implemented in Opera
if it causes problems. I don't see a difference in functionality with
smooth scrolling being disabled.
Thanks for the help!
Lee Harvey
>> Did disabling Smooth Scrolling help a bit?
>
> Well, I did all suggestions made by everybody who replied (decreasing
> disk cache, smooth scrolling, etc...) and now it works flawlessly. I
> don't know what did the trick though.
Ah, good! Glad to hear it.
> This makes me wonder though why smooth scrolling is implemented in
> Opera if it causes problems.
I think "smooth scrolling" is enabled by default in Opera to appease any
newbies who might be migrating from MSIE. After all, that setting is also
enabled by default in MSIE. In other words, Opera is trying to minimize any
shock caused by transitioning from MSIE to Opera. Sadly, MSIE /still/ has
the majority browser share.
Just a thought.
> I don't see a difference in
> functionality with smooth scrolling being disabled.
There should be no functional differences ( only performance gains ;) when
smooth scrolling is disabled.
Thomas Lindemans
<leeh...@grassyknoll.com>:
The problem surfaces again... unfortunately. But i think I know now when
it happens. Could you try the following:
With images (shift+i)disabled
- go to http://www.quinnware.com/forum/
- go to, for instance, the general forum
- open around 10 topics, each in its own tab (hold down ctrl+shift while
clicking)
- make sure the last topic you open is one in which many replies have been
put (so that you have to scroll down)
- scroll down
- scroll up again.
Do you see Opera hesitating (for a quick moment)?
There is some other strange behaviour, but i haven't figured out exactly
what gets opened. I'll try explaining:
If, after this first phenomenon (Opera hesitating to scroll up), I
continue browsing, after a while (this is randomly), instead of scrolling
up, Opera opens a random link on the page.
I realise this must sound very confusing and I hope it makes sense,
because this problems is so annoying that I would hate to have to use
another browser.
--
Gemaakt met Opera's revolutionaire e-mailprogramma:
http://www.opera.com/mail/
Lee Harvey
> The problem surfaces again... unfortunately. But i think I know now
> when
> it happens. Could you try the following:
>
> With images (shift+i)disabled
>
> - go to http://www.quinnware.com/forum/
> - go to, for instance, the general forum
> - open around 10 topics, each in its own tab (hold down ctrl+shift
> while
> clicking)
> - make sure the last topic you open is one in which many replies have
> been
> put (so that you have to scroll down)
> - scroll down
> - scroll up again.
>
> Do you see Opera hesitating (for a quick moment)?
Nope, sorry, I don't notice any scrolling hesitation.
[64-bit AMD 3200+ CPU
512MB RAM
120GB HDD
4Mb/s broadband connection
WinXP Pro]
> There is some other strange behaviour, but i haven't figured out
> exactly
> what gets opened. I'll try explaining:
>
> If, after this first phenomenon (Opera hesitating to scroll up), I
> continue browsing, after a while (this is randomly), instead of
> scrolling
> up, Opera opens a random link on the page.
>
> I realise this must sound very confusing and I hope it makes sense,
> because this problems is so annoying that I would hate to have to use
> another browser.
Well, I do notice poor scrolling speed on pages with fixed background
images; but this is a known performance issue in Opera.