2006-03-20 10:58:36

by ragin shah

Subject: "Low-latecny patch for ARM"

Hi !
I m student.
I want to apply low-latency patch to kernel 2.4.26 for ARM processor.
I applied Andrew Morton's low latency patch of 2.4.25kernel to 2.4.26
kernel. I made some changes for '.config' section to apply it
correctly to ARM. Can anybody tell me whether i m right or wrong ? It
is not giving any error while applying patch.
Second thing,
Can anybody please tell me how to measure scheduler latency for kernel
on ARM after applying low-latency patch to measure kernel's
responsiveness?
Thanks in advance!

2006-03-21 08:33:00

by ragin shah

Subject: Re: "Low-latecny patch for ARM"

Hi !
I m student.
I want to apply low-latency patch to kernel 2.4.26 for ARM processor.
I applied Andrew Morton's low latency patch of 2.4.25kernel to 2.4.26
kernel. I made some changes for '.config' section to apply it
correctly to ARM. Can anybody tell me whether i m right or wrong ? It
is not giving any error while applying patch.
Second thing,
Can anybody please tell me how to measure scheduler latency for kernel
on ARM after applying low-latency patch to measure kernel's
responsiveness?
Thanks in advance!

On 3/20/06, ragin shah <[email protected]> wrote:
> Hi !
> I m student.
> I want to apply low-latency patch to kernel 2.4.26 for ARM processor.
> I applied Andrew Morton's low latency patch of 2.4.25kernel to 2.4.26
> kernel. I made some changes for '.config' section to apply it
> correctly to ARM. Can anybody tell me whether i m right or wrong ? It
> is not giving any error while applying patch.
> Second thing,
> Can anybody please tell me how to measure scheduler latency for kernel
> on ARM after applying low-latency patch to measure kernel's
> responsiveness?
> Thanks in advance!
>

2006-03-21 22:55:42

by Lee Revell

Subject: Re: "Low-latecny patch for ARM"

On Mon, 2006-03-20 at 05:58 -0500, ragin shah wrote:
> Hi !
> I m student.
> I want to apply low-latency patch to kernel 2.4.26 for ARM processor.
> I applied Andrew Morton's low latency patch of 2.4.25kernel to 2.4.26
> kernel. I made some changes for '.config' section to apply it
> correctly to ARM. Can anybody tell me whether i m right or wrong ? It
> is not giving any error while applying patch.
> Second thing,
> Can anybody please tell me how to measure scheduler latency for kernel
> on ARM after applying low-latency patch to measure kernel's
> responsiveness?
> Thanks in advance!

Use 2.6 with the -rt kernel patch, 2.4 and the low latency patch are
ancient history.

Lee