More data on the GeForce 8800 random slowdown bug

Tuesday 17th July 2007, 05:05:00 PM, written by Rys

Yesterday the good folks at The Tech Report reported on an issue affecting a good chunk of GeForce 8800 users, where 3D graphics performance would fall into the toilet at random and wouldn't come back until you restarted the game or tabbed out and back in.

NVIDIA got back to them and said it was a driver issue and that the driver team were working on a fix. Not enough info, Nick! So we did a bit of poking and it turns out to be caused by texture eviction from device memory. Textures aren't being evicted when they should be, causing a loss of available device memory for other resources.

So it stands to reason that if you restart the app or tab out and back in, both of which reset the device which causes a VRAM flush, you'll be good to go again. It's somewhat application dependent and depends on how the app does surface management, but a general fix should be possible for all but the most misbehaved programs.

We're not sure the fix will make it in to a driver this month, as TR noted yesterday, but fingers crossed.

Discuss on the forums

Tagging

nvidia ± geforce, 8800, slowdown, driver, surface, management


Latest Thread Comments (3 total)
Posted by ballsweat on Tuesday, 17-Jul-07 23:41:08 UTC
this must be the open gl problem with jedi academy and call of booty.

Posted by cho on Wednesday, 18-Jul-07 04:15:39 UTC
the 320mb falldown in some game on vista too.

http://www.pcinlife.com/article/graphics/2007-06-02/1180790746d363_11.html

http://www.pcinlife.com/article/graphics/2007-06-02/1180790746d363_14.html

http://www.pcinlife.com/article/graphics/2007-06-02/1180790746d363_16.html

http://www.pcinlife.com/article/graphics/2007-06-02/1180790746d363_25.html

Posted by Wester547 on Thursday, 26-Jul-07 20:50:03 UTC
The texture evict memory issue makes 'sense', and is a platform for other issues, too. It certainly explains the slow-downs, lock-ups, and artifacts in F.E.A.R. as well, and probably is why Half-Life 2 doesn't work.... here's hoping the new official driver (162.18 on XP's behalf) fixes around this...


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