Messages in this thread |  | | | Subject | Re: Kernel 2.6 with X (xorg) 4.4 (eats more CPU power) | | From | Arjan van de Ven <> | | Date | Wed, 01 Dec 2004 11:26:07 +0100 |
| |
On Wed, 2004-12-01 at 18:21 +0800, Joe Hsu wrote:
> And I found something interisting happened. In pentium 4 > 3.0G machine and linux kernel 2.6, X and my program total > consumes 5% of cpu resource. > > But in pentium 4 2.xG or below, it would consume 10% or > more of CPU resource. (If you try this with XFree86 4.2 and > pentium 1.xG machine, it would consume 30% or more of cpu > resource at a peak.) > > In contrast, I've tried Kernel 2.4 with same X, same > program, and same machine. It consumes almost zero of CPU > resource( no matter it runs on a P4 1.xG or P4 3.0G and no > matter it runs on 4.4 or 4.2 X-server). > > Same phenomenon happened when I ran 4 mpeg4 playback > programs (each 320x240, 30 frames per second, no scaling). > It seems that these programs and X consume almost zero of > CPU power when the KERNEL HZ is 100. (I've > tried Robert Love's variable HZ patch to kernel 2.4 and > change HZ to 1000........Same phenomenon as 2.6) > > Could any one explain why??? Thanks. > (I wish to be personally CC'ed the answers/comments posted > to the list in response to your posting 'cause I do not > subscribe to this mailing list.) > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ --
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |