Slow GUI in Yosemite

[naquaada]

Hi,

 

I've have Yosemite 10.10.1 working, including CI/QE/OpenGL. There's only one issue: The slow GUI score in Xbench. But it's also noticeable while working.

 

Hardware:

 

Gigabyte GA-Z77N-WiFi

Core i7 3770S (4x.3.1 GHz)

Intel HD4000 graphics

16 GB RAM

Atheros WLAN

USB 3.0

 

Gigabyte GA-Z77-DS3H

Core i7 3770K (4x.3.5 GHz)

Radeon HD6870 graphics (ID: 6738)

16 GB RAM

Atheros WLAN

USB 3.0

 

Gigabyte GA-N61N-D2V

Core i7 3770S (4x.4.1 GHz)

Intel HD4000 graphics

16 GB RAM

 

Asus A8N-SLI Premium

Opteron 185 (2x2.6 GHz, AMD Socket 939)

Radeon HD2600XT

4 GB RAM

USB 3.0 (LaCie drivers)

 

I'm only classic systems, no patched BIOS, no UEFI and GPT harddrives, on the i7, too. I have Leopard 10.5.8 on the AMD system, 10.6.8 and 10.10.1 on the Intel systems.

 

Xbench is still my favorite benchmark program, although it may not be very accurate. In Yosemite it hangs during the Thread test, but I've read more often about that problem.

The problem is, that Yosemite has problems with the simplest texts, Text and GUI speed. Here is a comparison:

 

Quartz Graphics / Text Test:

 

Leopard/AMD (Radeon HD2600 Natit) : 564.38

Snow Leopard (HD4000/no drivers) : 1042.11

Yosemite (HD4000 w/drivers) : 297.84

Snow Leopard (Radeon HD6870) : 1188.46

Yosemite (Radeon HD6870) : 324.13

 

User Interface Test:

 

Leopard/AMD (Radeon HD2600 Natit) : 179.41

Snow Leopard (HD4000/no drivers) : 605.11

Yosemite (HD4000 w/drivers) : 58.43

Snow Leopard (Radeon HD6870) : 710.97

Yosemite (Radeon HD6870) : 67.13

 

Because the values of Xbench are always changing a bit after some tests, I made every time three tests.

 

It's absolutely weird: Even although Snow Leopard has no QE/CI/OpenGL, it is on the same machine about 3,5x faster in Text test and 9x faster in the GUI on the Intel HD4000 ! And you'll notice this while working with the OS. This is actually the last problem I have in Yosemite, and finding no solution for the last issue is extremely annoying ;-)

 

Because the same hardware works faster on Snow Leopard, it must be an internal issue in Yosemite. It would be great if anyone could add his Xbench scores, device ID's and Chameleon settings for framebuffers etc. These are my data:

 

Intel HD 4000 Graphics: Dev 0x8086 ID 0x0162, Framebuffer Capri (unmodified)

Sapphire Radeon HD6870 1 GB: Dev 0x1002 ID 0x6738, Barts, Framebuffer should be Duckweed

 

It's a bit weird: Before booting I can see very short a 'Duckweed' info, but in the kexts is no Duckweed available. In ATI6000Controller.kext of Snow Leopard is my ID listed in 'Gibba', in AMD6000Controller.kext it is listed in 'Muskgrass'. Selecting one of the ATI configurations in Chameleon Wizard results in one black monitor (I have two connected, both DVI).

 

Greets, naquaada.