Liquorix kernel drop FPS
Posted: Apr 1, 13, 0:45 017082345
 Status: New User - Welcome
Joined: 01 Apr 2013
Posts: 2
Location: Viet Nam
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Hi all !!

I using Ubuntu and runing Liquorix kernel 3.8 but playgame low FPS :(

sorry i'am bad english
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Posted: Apr 1, 13, 9:46 techAdmin
 Status: Site Admin
Joined: 26 Sep 2003
Posts: 4127
Location: East Coast, West Coast? I know it's one of them.
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Frames per second has nothing to do with the kernel, that is a function of your video driver mostly. Show the output of: inxi -bxx

otherwise there is no information for us to use.
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Liquorix kernel drop FPS
Posted: Apr 1, 13, 16:24 017082345
 Status: New User - Welcome
Joined: 01 Apr 2013
Posts: 2
Location: Viet Nam
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:: Code ::
System:    Host: Linux Kernel: 3.8-5.dmz.1-liquorix-686 i686 (32 bit, gcc: 4.7.2)
           Desktop: Gnome dm: lightdm Distro: Ubuntu precise (12.04.2 LTS)
Machine:   Mobo: ASRock model: G31M-S. Bios: American Megatrends version: P2.10 date: 05/16/2012
CPU:       Dual core Pentium CPU E5300 (-MCP-) clocked at 2603.00 MHz
Graphics:  Card: Intel 82G33/G31 Express Integrated Graphics Controller bus-ID: 00:02.0 chip-ID: 8086:29c2
           X.Org: 1.13.0 driver: intel Resolution: 1024x768@60.0hz
           GLX Renderer: Mesa DRI Intel G33 x86/MMX/SSE2 GLX Version: 1.4 Mesa 9.0.3 Direct Rendering: Yes
Network:   Card: Realtek RTL8101E/RTL8102E PCI Express Fast Ethernet controller
           driver: r8169 ver: 2.3LK-NAPI port: e800 bus-ID: 01:00.0 chip-ID: 10ec:8136
Drives:    HDD Total Size: 160.0GB (30.0% used)
Info:      Processes: 136 Uptime: 1 min Memory: 189.4/998.5MB Runlevel: 2 Gcc sys: 4.6.3 alt: 4.7
           Client: Shell (bash 4.2.25 running in gnome-terminal) inxi: 1.8.45

i'am using glxgears test and disable sync vblank.

ouput:

ubuntu kernel: 12xx FPS
Liquorix kernel: 8xx FPS
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Posted: Apr 4, 13, 19:22 damentz
 Status: Assistant
Joined: 09 Sep 2008
Posts: 1135
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glxgears is a CPU bound test, you'll need to find a different benchmark to prove that your graphics performance is measurably slower. Liquorix is configured (for now) with CFS and half the latency as the default configuration, so the overhead of context switching can hurt non-realistic tests like glxgears.

Also, you're running Ubuntu 12.04. I'm surprised that you're able to get any useful graphics at all with your userspace being that old. You should try upgrading to a 12.10 base first before looking for performance bugs. Mismatched kernel and intel-drm packages can cause strange graphics bugs and performance anomalies.
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