Re: kernel performance

[Paras pradhan <pradhanparas@gmail.com>]

hi:

thank you all  for the reply.

i found DMA is disabled.. so will enable it first and try..

then as Hugo has suggested to check for the patch.. i will do it..


don't know why kernel image from debain sid did;t work for me.. but
from debain stable it is working and performance is good.


Thanks
Paras.

On 9/13/05, Jan Willem Stumpel <jstumpel@planet.nl> wrote:
> Paras pradhan wrote:
> > hi:
> >
> > i want to build a custom 2.6.x kernel for desktop systems. i
> > have build kernel 2.6.12-3 successfully , but the performace of
> > the kernel 2.4.27-1-386 ( from debian sid mirror ) is much
> > better  than kernel 2.6.12-3 that i built from source. for ex:
> > in kernel 2.4.27-1 if it takes 5 minutes to burn a CD, it will
> > take around 20 minutes in my customized kernel.  Also running 2
> > or more applications is very sppedy in 2.4.27-1 than my custom
> > built kernel.
> >
> > what shouild i add in .config before building my 2.6.x keries
> > so that the perfomance will be equal or better than 24.x series
> > kernel.
> 
> You may not have DMA enabled. Check in menuconfig
> 
>    Device Drivers  --->
>       ATA/ATAPI/MFM/RLL support  --->
>           Generic PCI bus-master DMA support
> 
> And perhaps
> 
>           Use PCI DMA by default when available
> 
> Regards, Jan
> 
> 
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