Re: How much of microkernel?

["Thomas E. Spanjaard" <tgen@xxxxxxxxxxxxx>]

Matthew Dillon wrote:
> :I've always been a fan of microkernel design and I would like to know 
> :how much towards microkernel design do you have plans to go with 
> :DragonFly? I know you will be incorporating VFS into userland which is 
> :normally a feature of a microkernel, but where do you wanna go after 
> :that, in regards to microkernelizing DragonFly? Drivers? TCP/IP? other 
> :subsystems?
> :Petr
>     Well, DragonFly is definitely not a microkernel.  We forked off of
>     FreeBSD, after all, and that is a fairly monolithic kernel.  I like
>     the microkernel concept but putting core elements of an operating
>     system into their own protection boxes result in fairly significant
>     performance issues.

I think L4 and Mungi have proven that doesn't have to be the case these 
days.

Cheers,
--
        Thomas E. Spanjaard
        tgen@xxxxxxxxxxxxx

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