Date: Fri, 5 Dec 2014 16:45:13 +1100 From: Outback Dingo <outbackdingo@gmail.com> To: freebsd-questions@freebsd.org Cc: clutton <clutton@zoho.com> Subject: Re: FreeBSD working from RAM (MFSROOT) as a Workstation. Message-ID: <CAKYr3zyi8rYuywL-mnhgMQmKrzhTQWKa_4%2BaV145UmyuefthOg@mail.gmail.com> In-Reply-To: <447fy665uf.fsf@be-well.ilk.org> References: <1417734458.1772.1.camel@zoho.com> <447fy665uf.fsf@be-well.ilk.org>
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On Fri, Dec 5, 2014 at 4:08 PM, Lowell Gilbert < freebsd-questions-local@be-well.ilk.org> wrote: > clutton <clutton@zoho.com> writes: > > > Is anyone use a FreeBSD as a Desktop working from RAM, using MFSROOT? > > That only speeds up the *first* load of each memory page mirroring a > disk sector. After the system has been up a while, it's actually slower > than running with a disk, because everything you actually use will have > two copies in RAM: one on the disk image, and the one that's actually > occupying normal resident pages. > > Furthermore, you have to load your whole root filesystem from disk > before you start, even the parts you haven't used yet. I would expect > that to give you a *slower* startup time. RAM is faster than SSD access, > but the SSD is non-volatile, whereas the RAM needs to be repopulated > from non-volatile storage every time you boot. And every page that is > used has to get loaded into the RAM disk and *then* loaded into virtual > memory. > > TL;DR: To run from RAM, you first have to load the RAM. The chances that > an MFSROOT does this more efficiently (than starting directly from the > nonvolatile disk) seem remote. > well a good starting point to work from is mfsbsd http://mfsbsd.vx.sk/ > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscribe@freebsd.org" >
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