What is the kernel doing?

[Bob Palowoda]

 I'm curious, I was running umon386 and watching my system when there was
no activity. I notice that a rawch read causes a process switch. And in turn
it appears that the pwitch causes a iget, namei and dirblk. I assume the  
latter are disk access. Why does it do this?

---Bob

-- 
Bob Palowoda   palowoda at fiver              |   *Home of Fiver BBS*
Home {sun}!ys2!fiver!palowoda              | 415-623-8809 1200/2400
     {pacbell}!indetech!fiver!palowoda     |     An XBBS System                
Work {sun,pyramid,decwrl}!megatest!palowoda| 415-623-8806 1200/2400/19.2k TB+