What Kernel Ring Buffer Contains?

Nishant Desai · 08-29-2006, 11:41 PM

Dear All,
Currently I am studying about Kernel Space drivers and there i have came across the term Kernel Ring Buffer, 'dmesg' command either control or print the Kernel Ring Buffer, so i want to know that what exactly the Kernel Ring Buffer contains? what are the contents inside the Kernel Ring Buffer?

Thanks,
Nishant

acid_kewpie · 08-30-2006, 02:06 AM

well as you said yourself dmesg will show the ring buffer... so that's exactly what's in it.

Nishant Desai · 08-30-2006, 06:19 AM

Quote:

Originally Posted by acid_kewpie

well as you said yourself dmesg will show the ring buffer... so that's exactly what's in it.

Dear Kewpie,
i think that is the way to access the ring buffer, but i want to know that what the Kernel Ring Buffer contains? dmesg ll show something on the screen but i dn know what are that line contains? and thats what i want to know.

Thanks,
Nishant

acid_kewpie · 08-30-2006, 06:44 AM

it's all messages from the kernel.

rajmalawar@gmail.com · 02-07-2011, 01:47 PM

Quote:

Originally Posted by acid_kewpie

it's all messages from the kernel.

Hi Nishant,

Kernel ring buffer contains the all the booting messages when the kernel boots.And all the core messages related to hardware, live loaded module's etc.
For eg You want to know the the server you login-ed is virtual machine or not #dmesg | grep virtual

Best Regards,
Rajesh Gupta