| Summary: | Very poor performance on R100 QD [Radeon 7200] | ||||||||||
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| Product: | xorg | Reporter: | jpxsat | ||||||||
| Component: | Driver/Radeon | Assignee: | xf86-video-ati maintainers <xorg-driver-ati> | ||||||||
| Status: | RESOLVED NOTABUG | QA Contact: | Xorg Project Team <xorg-team> | ||||||||
| Severity: | major | ||||||||||
| Priority: | medium | CC: | freedesktop, jpxsat | ||||||||
| Version: | unspecified | ||||||||||
| Hardware: | Other | ||||||||||
| OS: | Linux (All) | ||||||||||
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| i915 platform: | i915 features: | ||||||||||
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Description
jpxsat
2011-07-25 06:54:49 UTC
Please attach your xorg log, xorg config, dmesg output, and glxinfo output. Created attachment 49528 [details] [review] xorg log Created attachment 49529 [details] [review] glxinfo output Created attachment 49530 [details] [review] dmesg output Sorry, I haven't found how to get xorg config Anything else i can help? Can you also attach the same information for the M6 that works better? Ok, i've been playing around a little and this is what i get from some experiments: - My M6 is on a Laptop that uses Lubuntu (openbox - so no fancy effects) and it works better with every xord-edgers ppa update. BUT to be able to get valid logs to compare i tried to run an Ubuntu install in this machine: great surprise, even moving the mouse made everything disappear and appear after a few seconds: logged into the "Ubuntu Classic (with no effects)" and everything runs normally :) - After that I go to my machine with the R100 and log into the "Ubuntu Classic (with no effects)" session, and surprise: everything runs fast again! (even the game Zuma -under wine- runs ok again) / Maybe is something when effects (3D?) is activated? Logged into the classical environement of ubuntu makes the machine with the M6 unusable and the R100 works very bad. Do i post the logs for the M6 anyway? (In reply to comment #8) > > Logged into the classical environement of ubuntu makes the machine with the M6 > unusable and the R100 works very bad. Likely there is not enough vram to run a compositor well (only 32 MB of vram and 128 MB of gart on the r100) as such the gfx driver spends most of it's time swapping buffers. Compositors use a lot of vram since every app renders to it's own offscreen buffer. Ok, so i'll keep working with my desktops without compositing :) Let me know if you need anything related to those two cards ! (In reply to comment #9) > Likely there is not enough vram to run a compositor well (only 32 MB of vram > and 128 MB of gart on the r100) as such the gfx driver spends most of it's time > swapping buffers. Compositors use a lot of vram since every app renders to > it's own offscreen buffer. While this is certainly true, I wonder if the driver really does the best job it could in ram-limited situations. I suspect the gart size isn't really much of a problem here (should be possible to adjust in bios for some experiments) but rather vram is the big issue. In such vram-limited situations the best strategy for performance would likely be to leave most things in agp gart (especially on such slow card which doesn't have that much memory bandwidth anyway) and only transfer the most often used things to vram, but I don't think the driver can do anything like that. |
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