Video Accelleration OK, but Firefox performance quite poor!

[brainwash]

Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory

Hardware acceleration for Flash videos is enabled by default, but it is only supported by NVIDIA cards. So this error message will appear, if the library for NVIDIA's VDPAU backend is installed on your AMD/ATI based system. So either delete the library or ignore the messages.

I'm not sure what might cause the slow performance (even on sites without flash content). Try to monitor the running processes while browsing some websites.

[QIII]

I just experimented and got the same message. So you are right in part.

However, it is not correct that only NVIDIA supports Flash. The relationship is the other way around. Adobe chose VDPAU.

Adobe supports VDPAU. NVIDIA does not support Flash.

ATI cards will accelerate Flash in gnash and have since 2010, but I never had good luck with gnash -- but I haven't used it in a long time. Certainly not since 2010.

Edit: I installed gnash on a machine with an ATI card. It did, in fact, allow acceleration and put a really good load off on the GPU -- putting as much as a 30% load on the GPU. Unfortunately, I could not get 1080p content to play (the little spinning balls went on forever) and not all sites recognized it (on 3dgameman, for instance, I got gray boxes and no video.) So, it's not an inherent problem with ATI, but simply that Adobe has chosen to use VDPAU.

[razor7]

Hi, please, lets no divert the topic, The issue is that firefox gets slow on pages with or without flash, it gets slow on even html5 pages, or pages like http://ubuntuforums.org/showthread.php?t=1980663

[QIII]

Just some side chatter since I haven't found anything yet. Still looking.

While you wait, try using Chrome or another browser so that we can see if we can isolate this to Firefox.

If another browser works, we will try creating a new Firefox profile.

[flemur13013]

"The issue is that firefox gets slow on pages with or without flash, ..."

Yup.

I had that happening until I disabled the flash plugin - gnash, too.

Now those pages without flash don't hang.

[razor7]

Hi, disabled flash, restarted, no luck, still HUGE slowness on test site http://9to5mac.com/

[QIII]

Try with a different browser for a moment. Let's make sure it's FF.

[razor7]

Just some side chatter since I haven't found anything yet. Still looking.

While you wait, try using Chrome or another browser so that we can see if we can isolate this to Firefox.

If another browser works, we will try creating a new Firefox profile.

Well, I think this is huge!

Tested http://9to5mac.com/ on Chromium and performance is poor.

Chromium 18.0.1025.151 (Build para desarrolladores 130497) Ubuntu 12.04
SO Linux
WebKit 535.19 (trunk@106313)
JavaScript V8 3.8.9.16
Flash 11.2 r202
Agente de usuario Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.19 (KHTML, like Gecko) Ubuntu/12.04 Chromium/18.0.1025.151 Chrome/18.0.1025.151 Safari/535.19
Línea de órdenes /usr/lib/chromium-browser/chromium-browser --flag-switches-begin --flag-switches-end
Ruta ejecutable /usr/lib/chromium-browser/chromium-browser
Ruta del perfil /home/martin/.config/chromium/Default

[QIII]

Try a site in Argentina (as near by you as possible) and see how well it performs.

[razor7]

Try a site in Argentina (as near by you as possible) and see how well it performs.

Well, I think I will not thest that, because once the site is loaded, the rendering process is handled by the browser rendering engine.

Just to clarify, the slowness happens after the site is completely loaded, so there is nothing to do with network performance, it is a video acceleration issue.