HELP!!: CPU resource allocation between kernel modules and user mode process

neyshule · 04-06-2011, 04:33 PM

Hi,all:
I run my program which consists of one kernel module and one user mode process on a dual core server. The problem here is the kernel module consumes 100% of one core while the user mode process only consumes 10% of the other core, is there any solution that I can assign some computing power from the user-mode core to the kernel-mode core, is there any allocation scheme? I knew linux seems to have some system call to allocate CPU upon different processes, but not kernel with module.
Thanks very much to reply.

syg00 · 04-06-2011, 08:13 PM

A kernel module that consumes an entire core sounds particularly poorly written. Best to fix that first.

And no, you can't allocate more than an entire core/CPU to any process if it is single-threaded. Again this is a (poor) code design issue.

neyshule · 04-06-2011, 10:58 PM

Ok, my bad, actually this program has a pid, while it's running, using top I can see it consume one core 100% usage. so how can I let it use the other core?

Nermal · 04-08-2011, 04:18 AM

Threads are your friend here.

what is your code written in? I may be able to offer assistance.

nini09 · 04-08-2011, 02:29 PM

The question isn't how can you let the thread use other core if you only have single. The question is why your kernel module consume 100% one core power. Does kernel module have dead loop or handle too many thing?