Date: Thu, 11 Jan 1996 09:50:17 -0500 (EST) From: "Stephen F. Combs" <combssf@salem.ge.com> To: Lars Gerhard Kuehl <lars@elbe.desy.de> Cc: jehamby@lightside.com, freebsd-hackers@freebsd.org Subject: Re: Pageable kernel? [was: PnP Proposal] Message-ID: <Pine.SUN.3.91.960111094629.1138H-100000@combs.salem.ge.com> In-Reply-To: <9601111334.AA03265@elbe.desy.de>
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On the idea of a microkernel, I've got a grand total of 3 Solaris2.x systems out of 70 total Sun's [and one of those was forced on me by corporate!]. The reason I initially went with 386BSD0.1 was because of it's close similarity to my SunO/S box at work! MicroKernels COULD be nice but my experience with them has been SH**. I've been working with SYSVr4 for years [fighting all the way] and am constantly pinging on my Sun Rep to keep SunO/S 4.x alive! Just my $0.02 worth! Steve Combs CombsSF@Salem.GE.COM On Thu, 11 Jan 1996, Lars Gerhard Kuehl wrote: > Date: Thu, 11 Jan 96 14:34:31 +0100 > From: Lars Gerhard Kuehl <lars@elbe.desy.de> > To: jehamby@lightside.com > Cc: freebsd-hackers@freebsd.org > Subject: Re: Pageable kernel? [was: PnP Proposal] > > > Jake Hamby: > > > > microkernel-type design (with dynamic memory management) a la Solaris, > > where every filesystem, device driver, etc, is a separate file. I know, > ^^^^^^^^^^^^^ > ...and if either of these is damaged you're seriously in trouble... > > > ... I'm dreaming, but it would still be nice... > > A nightmare, it has been one of the most important reasons that I've > changed to FreeBSD and switched back to SunOS on our Sparc boxes. > > FreeBSD is adult and doesn't need to follow every fashion. > The kernel size isn't really an issue well say up to two or > three MB. For a reasonable performance you need now at least > 16 MB and be certain the requirements will further grow > regardless whether the system has a micro kernel or a rather > traditional kernel. > > A micro kernel is a good solution for an commercial OS - it > allows to sell special service modules seperately - today an > OS still only without C compiler will tomorrow come without > networking capability, the day after tomorrow without scsi > driver. Call that scalable and you will become a rich man. > But there isn't need for that in a free operating system. > > Lars > =============================================================================== (My employer is in NO WAY responsible for the opinions expressed herein) Stephen F. Combs Internet: CombsSF@Salem.GE.COM GE Industrial Sales & Services Voice: 540.387.8828 Network Services Home: CombsSF-Home@Salem.GE.COM 1501 Roanoke Blvd Home Voice: 540.389.9524 Salem, VA 24153 (not reliable after 9:30pm, 'cuz 'tis my link) ===============================================================================
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