[lkml]   [1996]   [Sep]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Preempting kernel tasks
   From: (Alan Cox)
Date: Tue, 3 Sep 1996 22:18:36 +0100 (BST)

> (btw, kernel preemption IMHO is a sorry and dirty solution for
> the
> problem that it claims to solve)

Its extremely useful for high performance polled IO drivers (such
as the Quickcam). Checking if I need to reschedule costs me about
5% performance on the camera.

I do not argue it's usefulness, it is indeed useful as you have
shown. Other applications exist as well. What I was trying to state
was that the ends need to be acquired in a cleaner fashion, not
that the ends are unnecessary.

David S. Miller

 \ /
  Last update: 2005-03-22 13:37    [W:0.026 / U:0.968 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site