Yep, there are plans to work on it during c2k10 hackathon. Support for big mem was enabled in the past (in 4.4 for some short time???), but there were problems with it. Of course you can try to enable it by your self. It's easy change and how to do that is in couple of threads in mailing list archives.
So if you need this amount of memory then you can try to enable it or maybe use different OS for now. No one OS is best for everything. Not even OpenBSD which is great in so many areas. On Thu, May 27, 2010 at 7:48 PM, Leonardo Carneiro - Veltrac <lscarne...@veltrac.com.br> wrote: > Marco Peereboom wrote: >> >> On Thu, May 27, 2010 at 11:13:36AM -0300, Leonardo Carneiro - Veltrac >> wrote: >> >>> >>> Marco Peereboom wrote: >>> >>>> >>>> bad advice. B Don't do it, there is a reason it isn't disabled. >>>> >>>> send oga some beer for c2k10 instead he might feel more pressure that >>>> way :-) >>>> >>>> On Thu, May 27, 2010 at 11:01:58AM +0100, Peter Kay (Syllopsium) wrote: >>>> >>>>>> >>>>>> From: "Siju George" <sgeorge...@gmail.com> >>>>>> On Thu, May 27, 2010 at 3:22 PM, Peter Kay (Syllopsium) >>>>>> <syllops...@syllopsium.com> wrote: >>>>>> >>>>>>>> >>>>>>>> From: "Siju George" <sgeorge...@gmail.com> >>>>>>>> but OpenBSD 4.7/amd64 SMP detects only 3 GB. >>>>>>>> >>>>>>>> Is there anything more I should do to get the other 1 GB of RAM >>>>>>>> recognized by the System? >>>>>>>> >>>>>>>> >>>>>>> >>>>>>> This is normal. Large memory support is not yet included in >>>>>>> OpenBSD by default for amd64. >>>>>>> >>>>>>> >>>>>> >>>>>> Is there anything I can do B to get this by recompiling the kernel or >>>>>> B something? >>>>>> >>>>> >>>>> Yes and no; google for 'bigmem' in the misc list for marc.info. You >>>>> have to edit >>>>> a source file and recompile the kernel. >>>>> >>>>> However, it won't work (to be precise, it will probably crash on boot, >>>>> or possibly >>>>> afterwards) unless you have an IOMMU, and most Intel systems don't. >>>>> >>>>> OpenBSD doesn't support the AGP/PCI-e GART as an IOMMU, and I'm not >>>>> sure >>>>> if it supports VT-d platforms (which you probably aren't running >>>>> anyway). The >>>>> only option here is AMD. >>>>> >>>>> Until the devs tell us it's working, it's not worth persevering with. >>>>> >>>>> PK >>> >>> Forgive me for the noob question (i'm a newbie at openbsd), but if i >>> B want to build, for example, a large squid cache using openbsd, in a B server >>> with BIIIG ram (12gb+), i will no be able to use the full memory B space? is >>> this what you guys are saying? >>> >> >> That is correct. B 12G of ram for web cache? B Why not a better disk >> instead? > > Hi Marco, tks for your anwser. Maybe i have not choosed the best example, > but the question is answered. > IMHO, this serious limits the use of OpenBSD in tasks that takes huge memory > space to execute. There is an serious effort to avoid this limitation? > > I'm not pushing anything, and i'm fully aware that developers does this > system because they want, and not to satisfy my personal needs. I just want > to be well informed to not talk any bulls**t. > > Tks in advance and sorry for my poor english.
