Re: L4-hurd Digest, Vol 6, Issue 21

[Fortes Marcelo]

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>    1. Re: L4-hurd Digest, Vol 6, Issue 12
>        (Niklas =?ISO-8859-1?B?UyERUDA=?=)
>    2. Re: L4-hurd Digest, Vol 6, Issue 12
>        (Niels =?iso-8859-1?q?M=F6ller?=)
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----------------------------------------------------------------------
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> Date: Mon, 19 May 2003 17:22:43 +0200
> From: Niklas =?ISO-8859-1?B?UyERUDA=?=
> <address@hidden>
> To: Marcus Brinkmann
> <address@hidden>
> Cc: address@hidden
> Subject: Re: L4-hurd Digest, Vol 6, Issue 12
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> Hi
> 
> On Sat, 17 May 2003 17:49:15 +0200
> Marcus Brinkmann
> <address@hidden> wrote:
> 
> > We hope so, and in fact, there is some result in
> L4 research that shows that
> > a multi server system can perform faster than a
> monolithical system under
> > certain conditions.
> 
> 
> Under certain conditions? Does this mean that
> monolithical systems are faster in
> general?
> 
> Thanks,
> Niklas
> 
> 
> ------------------------------
> 
> Date: 20 May 2003 09:33:37 +0200
> From: address@hidden (Niels
> =?iso-8859-1?q?M=F6ller?=)
> To: Niklas S!"P0" <address@hidden>
> Cc: address@hidden
> Cc: Marcus Brinkmann
> <address@hidden>
> Subject: Re: L4-hurd Digest, Vol 6, Issue 12
> Message-ID: <address@hidden>
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> Niklas S!P0 <address@hidden> writes:
> 
> > Under certain conditions? Does this mean that
> monolithical systems are faster in
> > general?
> 
> In a multiserver system, communication between
> different components
> must use some IPC mechanism, which implies quite a
> lot overhead and
> several context switches, compared to a monolithic
> kernel where it's
> just an ordinary function call within the kernel. To
> get a multiserver
> system as fast as a well-crafted monolithic kernel
> (like bsd or linux)
> seems quite hard.
> 
> Having fast ipc primitives is one important issue,
> and that's where L4
> enters the picture.
> 
> /Niels
> 
 Hi friends !!!!
 So Niels.
 Exporting some librarys as non trusted librarys for
use by the servers (like an exokernel approach) and
multi-threaded File System can just inprove more
performance too?, toghether the super fast IPC of L4?

Marcelo Fortes.
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> End of L4-hurd Digest, Vol 6, Issue 21
> ************************************** 

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