*BSD News Article 89935


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Newsgroups: comp.os.linux.misc,comp.os.linux.networking,comp.os.linux.setup,comp.unix.bsd.bsdi.misc,comp.unix.bsd.misc
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From: stephenk@netcom.com (Stephen Knilans)
Subject: Re: User-space file systems. 	(Re: Linux vs BSD)
Message-ID: <stephenkE62DGo.6J5@netcom.com>
Organization: Netcom Online Communications Services (408-241-9760 login: guest)
References: <5e6qd5$ivq@cynic.portal.ca> <5ea4g4$r6e@web.nmti.com> <330DF6FD.41C67EA6@cuillin.org.uk>
Date: Sun, 23 Feb 1997 16:22:00 GMT
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In article <330DF6FD.41C67EA6@cuillin.org.uk> Guy Dawson <guy@cuillin.org.uk> writes:
>Peter da Silva wrote:
>
>> Since a user-mode application on a 68020 can saturate a 10 Mbps ethernet
>> (observed behaviour) I didn't originally believe that the user-mode NFS
>> server on Linux was a bottleneck...
>
>User mode is fine IFF you don't mind using the extra CPU resource. On
>a multi-tasking box, a user mode nfsd will be competing with other
>programs for the CPU (and net etc).

That is true under KERNEL mode TOO!  The processing is NOT that complicated!

>
>Is efficient programming a good thing?
>
>Guy
>-- ---------------------------------------------------------------------
>Guy Dawson @ SMTP - guy@cuillin.org.uk // ICBM - 6.15.16W 57.12.23N 986M
>4.4>5.4 4.4>5.4 4.4>5.4 The Reality Check's in the Post! 4.4>5.4 4.4>5.4