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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Member since:

Where can I find more on this technique?

There are several existing synchronous reactive programming languages out there such as Esterel and Signal. However, they do not go far enough, that is, they do not go to the individual instruction level like the COSA model. COSA also introduces several innovations not found elsewhere such as the automatic resolution of data and event dependencies.

The only problem is that current CPUs are optimized for the algorithm and a true signal-based environment like COSA would suffer a performance hit. My hope is that this will change soon because this is the future of computing. There is no escaping it. We've been doing wrong from the beginning but it's never too late to change.

Reply Parent Score: 2

nii_ Member since:

Can you recommend any good online information on this signal based programming in relation to the algorithm based one?

I'm interested in what you're saying but certainly not convinced.

I checked that COSA website posted somewhere earlier. It doesn't well describe what this signal based system is for us 99.999% normal programmers. It talks a lot about Oh how wonderful it is and what the ultimate result is supposed to be in terms of reliability etc but nothing else.

Maybe I gotta dig deep and look for some documentation or something. Is it possible to provide good links to technical and detailed stuff etc? Thanks if so!

Reply Parent Score: 1

Mapou Member since:

Can you recommend any good online information on this signal based programming in relation to the algorithm based one?

Ultimately, COSA development will be done using a graphical/visual environment. Some of us are discussing the initial implementation of a COSA language of sorts that can be used to demo COSA's capabilities. For now, just read the following pages. It should give you a fairly good idea regarding what COSA programming is about.

Software Composition in COSA

Operating System:

Reply Parent Score: 1