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Old 12-16-08, 03:23 PM   #1
kinzeron
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Join Date: May 2008
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Thumbs down performence/memory/video problems

Hi,

It seems that the latest nvidia driver (180.16) is full of problem that I sought were solved in 180.11, there are performance problems after 2hrs or so of work, the fan speed is at max all the time (and which remains a non solved problem). Memory leaks, and when playing video the whole system freezes.

Nvidia, can you tell us please, when are we going to have a descent driver that doesn't suck?!

I m attaching a bug report:nvidia-bug-report.log.gz in the hope that it helps
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Old 12-19-08, 10:36 AM   #2
kinzeron
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Default Re: performence/memory/video problems

The problem with the recent driver (180.16) seems to exist even in the 180.11 driver, it is easy to reproduce:

Just open firefox, open two or more flash videos (youtube), and the 2Gigs of ram go bye bye.

Here is the memory layout
Code:
~$ free -m
             total       used       free     shared    buffers     cached
Mem:          2023       1805        218          0         89       1207
-/+ buffers/cache:        508       1515
Swap:         1907          4       1902
and here's what "top" says about memory:
Code:
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                                        
 6359 s1        20   0  478m 228m  37m R   41 11.3 142:29.14 firefox                                                                                        
 6170 s1        20   0 30420  11m 8592 S    3  0.6  11:37.10 gkrellm                                                                                        
 5764 root      20   0 98.7m  39m  15m S    2  2.0  20:42.98 Xorg                                                                                           
 6059 s1        20   0 31164 4604 3376 S    2  0.2   7:54.14 pulseaudio                                                                                     
    1 root      20   0  3056 1888  564 S    0  0.1   0:01.40 init                                                                                           
    2 root      15  -5     0    0    0 S    0  0.0   0:00.00 kthreadd                                                                                       
    3 root      RT  -5     0    0    0 S    0  0.0   0:00.16 migration/0                                                                                    
    4 root      15  -5     0    0    0 S    0  0.0   0:06.02 ksoftirqd/0
firefox is using 11% only, so if I m not mistaken the rest of memory is eaten by the kernel (and the driver) - mpeg codec?.

8400M G, 128M (driver displays 512), 2Gigs of RAM and Core2 DUO,

anyone knows of a magic flag that cure this problem?
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Old 12-19-08, 11:01 AM   #3
iamlindoro
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Default Re: performence/memory/video problems

Erm... you're comparing the performance of two *beta* drivers against one another. You should *expect* beta drivers to suck. That's why they're beta. If, when they *release* a non-beta 180 series driver you are disappointed, okay. But this is there for testing purposes only, and mostly to enable VDPAU development in the community.
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Old 12-19-08, 11:07 AM   #4
iamlindoro
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Default Re: performence/memory/video problems

Oh, and you should learn to read the output of the "free" command and how memory works in linux. That free output does *not* indicate that 2 Gigs are being actively used. Linux eats up almost all of the available memory as cache when possible to enhance speed. Your "free" output is totally appropriate.

Your problems aren't with your video driver either, they're with flash.
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Old 12-19-08, 11:17 AM   #5
kinzeron
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Default Re: performence/memory/video problems

If you try to run gtkperf with the "cached" full, you'll get stuck with a performance 3x worse. I don't think freeing the cache manually every time using "echo 1 > /proc/sys/vm/drop_caches" to get a usable performance is a good thing. The driver seems to only use "free" memory and avoid the cache. driver heuristics? who knows... but as I said, the good performance is back once forcing an entire cache drop!

-this is at least what I have noticed so far-
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