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Old 09-17-08, 09:56 AM   #25
kernelOfTruth
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Default Re: Performance issues and commercial development

just for kicks try out latest zen-sources (based on 2.6.27-rc* vanilla which includes lockless patches)

http://git.zen-sources.org/?p=kernel/zen.git;a=summary

and report back if that makes a difference (provided the problems arise from the filesystem you're using)
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Old 09-17-08, 06:18 PM   #26
AaronP
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Default Re: Performance issues and commercial development

I moved the offtopic replies to this thread into a new one. Please keep the offtopic discussion there.
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Old 09-17-08, 06:25 PM   #27
AaronP
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Default Re: Performance issues and commercial development

othernvuser,

The PBO test you linked to shows a significant improvement for me with PBOs enabled. Please generate and attach an nvidia-bug-report.log file so we can try to reproduce your problem.
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Old 09-17-08, 07:05 PM   #28
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Default Re: Performance issues and commercial development

looks like a bug to me:

PBO mode: 0
Transfer Rate: 630.8 MB/s. (157.7 FPS)

PBO mode: 1
Transfer Rate: 229.5 MB/s. (57.4 FPS)

PBO mode: 2
ransfer Rate: 433.6 MB/s. (108.4 FPS)

with 8800GT.
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Old 09-18-08, 12:57 AM   #29
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Default Re: Performance issues and commercial development

Quote:
Originally Posted by i_h View Post
looks like a bug to me:

PBO mode: 0
Transfer Rate: 630.8 MB/s. (157.7 FPS)

PBO mode: 1
Transfer Rate: 229.5 MB/s. (57.4 FPS)

PBO mode: 2
ransfer Rate: 433.6 MB/s. (108.4 FPS)

with 8800GT.
Useless.

Provide. Bug. Report. Kthxbye.
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Old 09-18-08, 01:32 AM   #30
othernvuser
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Default Re: Performance issues and commercial development

Here you go again, now I attached the bug report as well.

GeForce 8400M G:
PBO mode: 0 (no PBOs, just textures how I use them today)
Transfer Rate: 535.5 MB/s. (133.9 FPS)

PBO mode: 1
Transfer Rate: 226.0 MB/s. (56.5 FPS)

PBO mode: 2
Transfer Rate: 275.9 MB/s. (69.0 FPS)
Attached Files
File Type: bz2 nvidia-bug-report.log.bz2 (33.9 KB, 86 views)
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Old 09-22-08, 06:53 AM   #31
i_h
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Default Re: Performance issues and commercial development

This is my bug report...
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File Type: gz nvidia-bug-report.log.gz (30.9 KB, 81 views)
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Old 09-23-08, 02:03 PM   #32
etherfish
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Default Re: Performance issues and commercial development

Quote:
Originally Posted by AaronP View Post
othernvuser,

The PBO test you linked to shows a significant improvement for me with PBOs enabled. Please generate and attach an nvidia-bug-report.log file so we can try to reproduce your problem.
To aid our efforts, could we get a copy of your xorg.conf? Is it otherwise vanilla?
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Old 09-24-08, 01:47 AM   #33
othernvuser
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Default Re: Performance issues and commercial development

Ubuntu 8.04.1, Linux 2.6.24-19-generic #1 SMP
The system is clean ubuntu, xorg.conf attached.
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Old 09-24-08, 08:10 AM   #34
i_h
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Default Re: Performance issues and commercial development

err... switched to x11 7.4 and nvidia driver 177.76, the results are even worse:

mode 0: Transfer Rate: 591.5 MB/s. (147.9 FPS)
mode 1: Transfer Rate: 33.5 MB/s. (8.4 FPS) - improves if I move the mouse (?!?)
mode 2: Transfer Rate: 85.5 MB/s. (21.4 FPS)



In mode 1 and 2 most of the cpu time is used for system. The program runs very slow for ~1 second and then hungs for ~1 second.
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File Type: gz nvidia-bug-report.log.gz (31.5 KB, 77 views)
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