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Old 05-26-10, 10:38 AM   #1
davelaser
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Default Performance regressions with 256.25 driver?

Phoronix have published some interesting benchmarks here:

http://www.phoronix.com/scan.php?pag...256_slow&num=1

Now sometimes the phoronix benchmarks are a bit unreliable but these look like quite serious regressions. Presumably the driver development team perform regression tests with the new drivers? Any explanation for the drop in performance?
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Old 05-26-10, 12:35 PM   #2
Arup
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Default Re: Performance regressions with 256.25 driver?

Well this driver is still in beta stages and there are lots of new additions to it so it will take some time to iron out these deficiencies.
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Old 05-26-10, 12:53 PM   #3
weltall
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Default Re: Performance regressions with 256.25 driver?

personally i see no regressions... actually i get better performance: just like this one points out http://www.phoronix.com/forums/showp...42&postcount=6
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Old 05-26-10, 04:32 PM   #4
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Default Re: Performance regressions with 256.25 driver?

Quote:
Originally Posted by weltall View Post
personally i see no regressions... actually i get better performance: just like this one points out http://www.phoronix.com/forums/showp...42&postcount=6
yep, it's better for me
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Old 05-26-10, 08:26 PM   #5
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Default Re: Performance regressions with 256.25 driver?

Same here, both GTK Perf and glxgears yield better numbers with latest drivers.
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Old 05-27-10, 12:43 AM   #6
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Default Re: Performance regressions with 256.25 driver?

Keep in mind it's Phoronix and they need the Ad dollars.
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Old 05-27-10, 12:48 AM   #7
mooninite
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Default Re: Performance regressions with 256.25 driver?

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Originally Posted by Dizzle7677 View Post
Keep in mind it's Phoronix and they need the Ad dollars.
Actually it boils down to Michael's ignorance about benchmarking. He may have good intentions, but he needs to step back and re-evaluate how he benchmarks. He needs to involve others in benchmarking tasks, especially with regards to the kernel, before he posts them on his site so that they are run properly and the article is more accurate.
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Old 05-27-10, 06:13 PM   #8
olifre
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Default Re: Performance regressions with 256.25 driver?

I am a regular user of compiz (in fact, I am living without Desktop Environment and use compiz standalone).
With the new driver, window-switching got a LOT faster! Finally, everything in compiz is completely fluent, if the card has not just gone to powersave-mode.

THANKS NVIDIA
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Old 05-27-10, 06:22 PM   #9
wiresquire
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Default Re: Performance regressions with 256.25 driver?

Quote:
Originally Posted by mooninite View Post
Actually it boils down to Michael's ignorance about benchmarking. He may have good intentions, but he needs to step back and re-evaluate how he benchmarks. He needs to involve others in benchmarking tasks, especially with regards to the kernel, before he posts them on his site so that they are run properly and the article is more accurate.
And what specifically do you see wrong with his methodology in this article/benchmark?

ws
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Old 05-27-10, 06:31 PM   #10
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Default Re: Performance regressions with 256.25 driver?

Quote:
Originally Posted by Dizzle7677 View Post
Keep in mind it's Phoronix and they need the Ad dollars.
Yep, it's very Ubuntu/GNOME biased. The memory benchmarks are wrong because anyone with an small amount of experience with Linux knows that using top and system monitor is for noobs and inaccurate.

I'd like to see the benchmarks not done on a mobile GPU for starters.
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Old 05-27-10, 06:47 PM   #11
mooninite
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Default Re: Performance regressions with 256.25 driver?

Quote:
Originally Posted by wiresquire View Post
And what specifically do you see wrong with his methodology in this article/benchmark?

ws
Example: his filesystem benchmark "showdown" between ext3/4, xfs, etc. was done in such a way that some file systems were not tuned properly or the benchmark itself was not performed correctly.

It's more than that one example, so please don't think I'm ratting out his benches over one article.
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Old 05-27-10, 07:06 PM   #12
wiresquire
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Default Re: Performance regressions with 256.25 driver?

What has that got to do with THIS benchmark on an nvidia driver and nvidia card?

Do you see anything specific to this article/benchmark? If so, point it out. If not.....

ws
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