On Mon, 30 Aug 2010 10:02:36 +0200 Karsten Mehrhoff <kawime@xxxxxx> wrote: > Using the same .config from 2.6.35.3 to compile 2.5.36.4 results in a > heavy load with 2.6.35.4. A regression within -stable is rather bad. > Example: > > Difference between 2.6.35.1/2/3 and 2.6.35.4 while watching some videos: > 2.6.35.4 switches the cpu for flash videos in the browser (opera or > iceweasel) or other video outputs to 2200/2400/2600 MHz meanwhile 2.6.35.3 > (or older) stays at 1000 Mhz. That results in a higher cpu temperature, > more power consumption and so one. > > Using other GUI program results in nearly the same problems with 2.6.35.4, > so this kernel is unusable for me. > > Results to see the difference for the same action > 2.6.35.4 > Core0 Temp: +45.0__C > Core1 Temp: +43.0__C > cpu MHz: 2200.000 or higher > > 2.6.35.3 > Core0 Temp: +32.0__C > Core1 Temp: +31.0__C > cpu MHz: 1000.000 (max. 1800, but falling back to 1000) > > kernel compiled with 'CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y' > results for me in 1000, 1800, 2000, 2200, 2400, 2600 MHz. > > I'm not the only one with this problem, other users experienced the same > behavior on other systems on 386 systems, i.e. a regression for glxgears > about 30% on slower systems. We all uses differnet AMD cpus and nNida > graphic controllers. Same results for the nvidia-kernel from the repos or > the nVidia driver from nvidia.com. > > There must something be wrong in the video subsystem, which is causing > this regression. > > My system (overview using 2.5.35.3): > ===================== > Processor: 2x AMD Athlon(tm) 64 X2 Dual Core Processor 5000+ > Memory: 4060MB > > Display > Resolution: 1920x1080 pixels > OpenGL Renderer: GeForce 9500 GT/PCI/SSE2 > X11 Vendor: The X.Org Foundation > Version: 1.7.7 > > Version > Kernel: Linux 2.6.35.3-kmt (x86_64) > Compiled: SMP Mon Aug 23 00:58:37 CEST 2010 > C Library: GNU C Library version 2.11.2 (stable) > Default C Compiler: GNU C Compiler version 4.4.5 20100824 (prerelease) > (Debian 4.4.4-11) > Distribution: Debian GNU/Linux squeeze/sid > > OpenGL > Vendor: NVIDIA Corporation > Renderer: GeForce 9500 GT/PCI/SSE2 > Version: 3.3.0 NVIDIA 256.44 > Direct Rendering: Yes I'm not seeing any relevant cpufreq changes in 2.6.35.3 -> 2.6.35.4 (ftp://ftp.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.35.4). There were a lot of DRM changes. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
