Re: [LI] [Offline] doubts on SMP concepts

[Arun Sharma <adsharma@xxxxxxxxxxxxxxx>]

On Mon, Dec 27, 1999 at 08:47:45PM +0530, Public Domain SoftWare wrote:
> questions are --
> (1) which model does linux follow (as per above characterisation)?

Symmetric aka SMP. 

> (2) what are the advantages/disadvantages of running two copies of same OS
>     over running one copy of OS?

Programming complexity and communication costs. In the SMP model, the job
of the programmer is easy - (s)he just creates enough threads to handle
all the tasks and let the OS schedule them. A multithreaded application
is SMP ready without any extra porting costs. However, the programmer
has to worry about synchronization issues. It can also be argued that
SMP is more RAM efficient - but in the large scheme of things, the space
taken up by the OS is insignificant.

	-Arun

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