Re: [PATCH] VM fix for 2.4.0-test9 & OOM handler
From: Linus Torvalds <torvalds@transmeta.com>
Date: 2000-10-10 17:28:02
On Tue, 10 Oct 2000, Rogier Wolff wrote:
So if Netscape can "pump" 40 extra megabytes of memory out of X, this can be exploited. Now we're back to the point that a heuristic can never be right all the time......
I agree. In fact, we never left that. Nothing is perfect. In fact, a lot of engineering is _recognizing_ that you can never achieve "perfect", and you're much better off not even trying - and having a simple system that is "good enough". This is the old adage of "perfect is the enemy of good" - trying too hard is actually _detrimental_ in 99% of all cases. We should have simple heuristics that work most of the time, instead of trying to cajole a complex system like X to help us do some complicated resource management system. Complexity will just result in the OOM killer failing in surprising ways. A simple heuristic will mean that the OOM killer will still fail, but at least it won't be be in subtle and surprising ways. Linus -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux.eu.org/Linux-MM/