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Old 04-20-11, 03:24 PM   #1
gqman69
Registered User
 
Join Date: Aug 2008
Posts: 35
Default Slower (Performance Regression) 270.x compared to 260.x with GTX460M

System

Asus G73JW Notebook
Intel Core i7 740QM
12GB Ram
nVidia GTX460M 1.5GB

Gentoo Linux x86_64
KDE 4.6.2 + Compiz 0.8.8
Kernel 2.6.38.2 (gentoo-sources), 2.6.39-rcX-gitX
gcc 4.5.2

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Problem

270.x are slower than 260.x

Scrolling in Firefox 4 is erratic, sometimes ok, sometimes choppy.

Even though glxgears is NOT a benchmark...

260.x /w compiz = ~12000fps
270.x /w compiz = ~6000fps

260.x /wo compiz/composite = ~22000fps
270.x /wo compiz/composite = ~10000fps


System under full load, 260.x is excellent and fluid.
System under full load, 270.x is choppy and erratic.

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Tried different kernels: 2.6.38.2 and 2.6.39-git
Tried different options: Automatic process group scheduling (ON|OFF)
Tried different xorg-server: 1.9.x and 1.10.x

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With NO other changes switching back to 260.x fixes all issues.

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nvidia.conf in modprobe.d (tried with none, tried with no MSI, tried with about everything unimaginable).

Code:
options nvidia NVreg_DeviceFileMode=432 NVreg_DeviceFileUID=0 NVreg_DeviceFileGID=27 NVreg_ModifyDeviceFiles=1 NVreg_RegistryDwords="PerfLevelSrc=0x2222" NVreg_Mobile=1 NVreg_EnableMSI=1
Attached Files
File Type: gz nvidia-bug-report.log.gz (51.0 KB, 94 views)
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