Date: Tue, 8 May 2007 04:38:09 +0800 From: "Mars G. Miro" <marsgmiro@gmail.com> To: freebsd-stable@freebsd.org, "Oliver Fromme" <olli@lurza.secnetix.de> Subject: Re: mfs and buildworlds on da SunFire x4600 Message-ID: <28edec3c0705071338m7d14206at218eb0efb1aa24d1@mail.gmail.com> In-Reply-To: <200705071615.l47GFCpp032048@lurza.secnetix.de> References: <28edec3c0705021247s84ee50fwe7f70a839bbcb8bc@mail.gmail.com> <200705071615.l47GFCpp032048@lurza.secnetix.de>
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On 5/8/07, Oliver Fromme <olli@lurza.secnetix.de> wrote: > Mars G. Miro wrote: > > Actually, it's not about having to finish building da world in da > > smallest amount of time, it's about whether mfs would really speed > > things up... > > I've made similar tests in the past, and my conclusion is > that it's not worth it. > > Using a memory disk for /usr/obj doesn't make much sense, > because soft-updates decouples the physical writes pretty as i've mentioned in my original email, da mfs's were created w/ softupdates turned off > well from the build process. On the other hand, using a > memory disk for /usr/src _might_ help a little, but it > depends on a lot of things. Especially if you have a again, both /usr/src and /usr/obj were mfs, and even async, noatime > speedy I/O system and plenty of RAM (so all of the files > can be cached) and /usr/src is mounted with the "noatime" > option, the difference is very small. > as Kris mentioned, a buildworld isnt prolly da appropriate test for mfs, as for da chrooted /usr or da buildkernel tests, I havent really tried them --- will try to do so and report back when i get da time ... btw, a buildworld on da x4100s takes just about da same times ~ 18mins... > By the way, please stop writing "da" instead of "the". It > looks childish and makes your mails difficult to read, so > it might prevent people from helping you. > oops. d0h ;-) > Best regards > Oliver > > -- > Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M. > Handelsregister: Registergericht Muenchen, HRA 74606, Gesch=E4ftsfuehrun= g: > secnetix Verwaltungsgesellsch. mbH, Handelsregister: Registergericht M=FC= n- > chen, HRB 125758, Gesch=E4ftsf=FChrer: Maik Bachmann, Olaf Erb, Ralf Geb= hart > > FreeBSD-Dienstleistungen, -Produkte und mehr: http://www.secnetix.de/bsd > > "The ITU has offered the IETF formal alignment with its > corresponding technology, Penguins, but that won't fly." > -- RFC 2549 > cheers mars
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