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DWM crap performance

#1 User is offline   vinifera 

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Posted 09 September 2012 - 03:53 PM

I'm bit lost

I have good machine to run win7

CPU dual core AMD Athlon (X2 5050e)
3 GB ddr2 RAM
and high end GPU GeForce 7950 GT

yet with DWM on, explorer takes 2 secs to open
browsing through folders lags
going into pictures folders and enabling thumbnails takes up to 15 seconds to show them

with DWM off, everything is instant, 1 to 2 seconds

shouldn't the effect be reversed ?
shouldn't the system with GPU usage (which is superior than CPU) be faster ?
(at least in drawing/showing things)

This post has been edited by vinifera: 09 September 2012 - 03:54 PM



#2 User is offline   MagicAndre1981 

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Posted 10 September 2012 - 09:17 AM

make a xperf trace and share it (zip it fist to reduce the size).

http://www.msfn.org/...caused-by-apps/

#3 User is offline   vinifera 

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Posted 20 September 2012 - 04:44 PM

without doing all that stuff :P

could it be because my GPU is direct x 9
and I remember that Vista's DWM (longhorn) was actually dx9

but since win7 emulates dx9 unlike 10 and 11
cant it be coz of my gpu being dx9 and win7 emulation of it ?

#4 User is offline   MagicAndre1981 

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Posted 21 September 2012 - 07:09 AM

Windows 7 doesn't emulate DirectX 9. Make the trace otherwise I can't see what is the cause. Btw, your "high end" GPU is much slower than today low end card or IGPs :D

#5 User is offline   vinifera 

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Posted 21 September 2012 - 12:16 PM

it still beats the DWM requirement :P
as it was GeForce 5/Radeon 9500 for it to work as I remember :P

This post has been edited by vinifera: 21 September 2012 - 12:16 PM


#6 User is offline   cluberti 

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Posted 21 September 2012 - 05:53 PM

I would recommend the OP get an XPerf trace, otherwise all we're doing here is guessing. A 7950 isn't the greatest card, but in the Vista days it was capable of getting a 5.9 WEI score, depending on how much vRAM was in the card and what it was clocked at. DWM should run fine on that card on a single monitor with a resolution of 1920x1200 or less, honestly.

#7 User is offline   MagicAndre1981 

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Posted 22 September 2012 - 03:16 AM

Again, make 2 traces (one with and one without DWM running). If possible use the Win8 WPT version and run the WRPUI and select "CPU usage" and in scenario "video glitches".

#8 User is offline   MagicAndre1981 

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Posted 03 October 2012 - 07:49 AM

have you made the requested traces?

#9 User is offline   vinifera 

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Posted 04 October 2012 - 11:27 AM

believe it or not, I didn't have time :P
kinda rush last 2 weeks and I always planned to do it :(

I'll report back when I do

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