Linked by Thom Holwerda on Tue 9th May 2006 21:25 UTC, submitted by luzr
OSNews, Generic OSes Torvalds has indeed chimed in on the micro vs. monolithic kernel debate. Going all 1992, he says: "The whole 'microkernels are simpler' argument is just bull, and it is clearly shown to be bull by the fact that whenever you compare the speed of development of a microkernel and a traditional kernel, the traditional kernel wins. The whole argument that microkernels are somehow 'more secure' or 'more stable' is also total crap. The fact that each individual piece is simple and secure does not make the aggregate either simple or secure. And the argument that you can 'just reload' a failed service and not take the whole system down is equally flawed." My take: While I am not qualified to reply to Linus, there is one thing I want to say: just because it is difficult to program, does not make it the worse design.
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RE[2]: a word from a programmer
by flav2000 on Wed 10th May 2006 02:53 UTC in reply to "RE: a word from a programmer"
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I think what's said about modularity and plugin is only true at the higher level.

Firefox plugin works b/c it's at the highest level. There is little or no distributed interactions between them.

Take the plugin a few levels down and have it all interact with each other and you have a mess. That's a reason that general OS concepts are taught in the first OS course while distributed OS concepts are taught in the 2nd higher level OS course.

It's because distributed systems introduce a number of newer problems. Microkernel essentially builds a distributed system on top of the microkernel. Considering that software lies on top of that - you have a distributed system on top of a distributed system. The complexity of something like that makes my head spin. That's what Linus mean by microkernel being totally impractical when you get down to use the concepts.

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