doom3 2.4.26 vs 2.6.7

i've just finished installing kernel 2.6.7 on my slackware 10 system (which has default 2.4.26 kernel), to get some practive for 2.6.9. i was hoping for a doom3 performance boost... but i got the opposite. see:

2.4.26 : 34.8 fps
2.6.7 : 31.6 fps

both done on standard doom3 installtion, with zero doom3 graphic changes (have only run timedemo with it), both times using 'timedemo demo1 usecache'. the only system tweaks i've done are the /etc/modules.conf thing. the nvidia drivers (6111) have to be reinstalled when switching from one kernel to the other, but work fine once in.

the kernel compilation went fine, the only issue so far is that the mouse is much too slow in the 2.6.7 system, in kde & doom3 menu (weird). the only performance increase i noticed with 2.6.7 was that things seem to load faster & files transfer quicker. copying the pak00*.pk4 files from one hard disk to the other, and it was faster than before (i've got two slack10 instalation, one for testing, one for keeps).

i had heard that 2.6.x should be faster in doom3, has anyone else tried this, or have the same issue?

my system specs:
xp2200 (266fsb), 512MB pc133 ram, geforce6800 (128MB), ga7zxe mobo, sblive!value.

Have you tried reinstalling the Nvidia driver from the website for the new kernel? That MAY get you some of your speed back.

There is a way to speed up your system.
First you can take a look at this thread and check the links in the only reply (i replied myself :P).

Basicaly with the patches you can improve desktop performance, and with some options when recompiling the kernel will help too.

Now i'm using a 2.6.8.1 kernel patched with cko8 and everything goes faster than with 2.6.5 that comes with fc2.

If you want there is also a patchset for the 2.4 series that could improve a lot your system, but the patchset for 2.6 is better maintained and tested.

Give it a try and then tell me ...

just got the 2.6.9 kernel in my system. now in doom3 i got 31.8 fps, which still isnt managing to beat the 2.4.26 kernel. argh. and i just went and ran the timedemo for the second time and encountered a strange thing; when i got through the small door where he gets the torch out and looks down at the round turbine-type things it just ground to a crawl. it had been running as normal before then, but just decided to go slow. the hard disk wasnt thrashing or anything, maybe the card had overheated and throttled back or something, but none of my system is overclocked.

in order to get the nvidia drivers to install i had to edit the init.c file, and then manged to install them.

oh well, maybe new nvidia drivers will help things. it could be a long wait for them though...

I suspect that the linux nvidia drivers are not a master piece of software, but they do their work in most of the situations.

Maybe due to your combination of motherboard and graphic card the latest drivers lack something.

I suggest you to try to gather all the info you can and send a bug report to nvidia.

Btw have you tried to patch your new 2.6.7 to 2.6.7-ck2?

I patched from 2.6.8.1 to 2.6.8.1-cko8 (another patch version) and i noticed a great improvement (patched and recompiled, thats the way).

Originally Posted by mkaman I suspect that the linux nvidia drivers are not a master piece of software, but they do their work in most of the situations. Maybe due to your combination of motherboard and graphic card the latest drivers lack something. I suggest you to try to gather all the info you can and send a bug report to nvidia. Btw have you tried to patch your new 2.6.7 to 2.6.7-ck2? I patched from 2.6.8.1 to 2.6.8.1-cko8 (another patch version) and i noticed a great improvement (patched and recompiled, thats the way).

hi guys i have FC4 2.6.11-1369_FC4_i686.smp installed on my P4 2.8GHZ 800FSB/Intel D915GAV MB system with 384MB Ram and 40 GB SATA HDD. from the begining iam facing problems installing video drivers, the DRIPKG drivers didn't install on my system so i installed the drivers from intel web site. now i have my desktop working fine but doom3 is hitching and the video quality is poor which i had not expected on my system. pls help me in this issue.

Originally Posted by gopi.d hi guys i have FC4 2.6.11-1369_FC4_i686.smp installed on my P4 2.8GHZ 800FSB/Intel D915GAV MB system with 384MB Ram and 40 GB SATA HDD. from the begining iam facing problems installing video drivers, the DRIPKG drivers didn't install on my system so i installed the drivers from intel web site. now i have my desktop working fine but doom3 is hitching and the video quality is poor which i had not expected on my system. pls help me in this issue.

I'm not sure but smp kernel is for multi-machine processing and if you are using only one machine you must boot from a non smp kernel and try again.

You can tune up the doom 3 settings to optimize performance, surely google has what you need.

Regards.