Announcement

Collapse
No announcement yet.

Catalyst 8.8 and poorer performance

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • csalsb
    started a topic Catalyst 8.8 and poorer performance

    Catalyst 8.8 and poorer performance

    I installed the ati propriety catalyst 8.8 drivers and have seen a drop in both glxgears and fgl_gears FPS. I was getting a solid 16000+ FPS in GLX gears and with the new drivers I am getting 10,000+. Anyone else experience this, and if so haave they found a fix for it?

  • lavinog
    replied
    Tried the nopat option: little improvement, but still slower than 8-7

    glxgears:
    8-7: ~2100fps
    8-8: ~1500fps
    8-8(nopat): ~1680fps

    returned to 8-7 and got the 2100fps
    also 8-6 yeilded about 2300fps, but was pretty unusable, prior to 8-6 it was consistantly ~2000-2100fps

    I know glxgears isn't a true benchmark, but it works for comparing results on the same machine to some extent. Besides I can barely play ut2004 on 8-8 now the frame rate is so bad.

    As far as stability: 8-5 and 8-6 segfaulted on just about anything. 8-7 works nicely. 8-8 has crashed my system a couple of times (once on when switching a youtube video from fullscreen, and another time when playing around with gxine's visualations.)

    Using:
    Ubuntu 8.04 64bit
    2.6.24-21-generic #1 SMP Mon Aug 25 16:57:51 UTC 2008 x86_64 GNU/Linux
    Gigabyte GA-MA78GM-S2H: (3200 IGP)
    AMD AthlonX2 4850e
    4g ram

    Leave a comment:


  • legume
    replied
    Originally posted by bridgman View Post
    For anyone seeing slower performance with 8.8 try the "nopat" boot option to disable the use of PAT and see if that helps.
    I wonder if there is more to it than just PAT.

    I just built a vanilla 2.6.26.3 and

    # CONFIG_X86_PAT is not set

    but I now see glitching in the ut2004 demo which does not happen with 8-8 on a 2.6.24.2 (whose config was used to build the 26.3).

    Leave a comment:


  • bridgman
    replied
    For anyone seeing slower performance with 8.8 try the "nopat" boot option to disable the use of PAT and see if that helps.

    Leave a comment:


  • NeoBrain
    replied
    I am not sure, but I have the impression that Neverball is quite laggy since 8.8.
    However, I still have to check wether this could also be caused by KDE 4 running in background when I have some free time again.

    Leave a comment:


  • falcald
    replied
    Originally posted by csalsb View Post
    I installed the ati propriety catalyst 8.8 drivers and have seen a drop in both glxgears and fgl_gears FPS. I was getting a solid 16000+ FPS in GLX gears and with the new drivers I am getting 10,000+. Anyone else experience this, and if so haave they found a fix for it?
    I am experimenting the same issue with a readeon HD4850. I had 8200 FPS in glxgears with the 8-7 version . Now I have 4500 FPS with the 8-8 driver.

    Leave a comment:


  • Melcar
    replied
    Originally posted by Kano View Post
    It seems only for CrossFire you need 8-8. For wine 8-5 is still better...

    Yup. There is really no reason to upgrade beyond 8.5, unless the newer revisions have fixes that you can't live without. Overdrive is nice, but not really a must have (and given that it's rather limited in compatibility at the moment); the same with Crossfire.
    Last edited by Melcar; 08-23-2008, 11:47 AM.

    Leave a comment:


  • Kano
    replied
    It seems only for CrossFire you need 8-8. For wine 8-5 is still better...

    Leave a comment:


  • Melcar
    replied
    8.5-8.8 all provide the same level of performance for me for my HD3850.

    Leave a comment:


  • marakaid
    replied
    I get 8000 with Radeon 4870, Catalyst 8.8, Ubuntu Hardy 64 bits generic kernel.

    My previous 8800GT gives me 21000 with 169.12, and 15000 with 173.14.12

    ETQW performance is worse than 8800GT, today the game hanged at initial menu, screen was corrupted with lots of very small boxes.
    Last edited by marakaid; 08-23-2008, 07:31 AM.

    Leave a comment:

Working...
X