Messages in this thread |  | | Date | Wed, 4 Sep 1996 13:14:37 -0400 | From | "David S. Miller" <> | Subject | Re: Preempting kernel tasks |
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From: alan@lxorguk.ukuu.org.uk (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.
Later, David S. Miller davem@caip.rutgers.edu
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