what is 0(1) scheduler ?
 

Can any one help me in understanding 0(1) scheduler?

Before knowing this I think you should read scheduling.
http://en.wikipedia.org/wiki/Scheduling_%28computing%29
It will clear your doubts, now you can read
http://en.wikipedia.org/wiki/O%281%29_scheduler
may be you have read this because it is first link in Google if you search your question there. But you don't understand this, read about scheduling.

and then 0(1) scheduler
http://www.slideshare.net/roylee17/linux-o1-scheduling

thanks
 

thank you very much eklavya