Date: Fri, 4 Nov 2011 13:56:10 +0400 From: Lev Serebryakov <lev@FreeBSD.org> To: Arnaud Lacombe <lacombar@gmail.com> Cc: Nate Dobbs <misconfiguration@gmail.com>, Greg 'groggy' Lehey <grog@freebsd.org>, Aleksandr Rybalko <ray@freebsd.org>, hackers@freebsd.org, Lars Engels <lars.engels@0x20.net> Subject: Re: Porting FreeBSD to Raspberry Pi Message-ID: <1101963570.20111104135610@serebryakov.spb.ru> In-Reply-To: <CACqU3MVVV=rBz4EyzF5LL8da8TO9iAG5ppa6o=0SrxswUMQ_4Q@mail.gmail.com> References: <20111103092222.GN37036@e-new.0x20.net> <20111103155802.7bfc1df0.ray@freebsd.org> <CACqU3MWo%2B2PAqdm71rvsh4f09-nBCnLi7s-VaZo8iHd92L8q_w@mail.gmail.com> <CAGjvUo6UpcsiTa-cyGM_Q_Em-9WOJLqM%2Bn_U6exJy_w2z%2B52RQ@mail.gmail.com> <CACqU3MU5zdfuymo4JZn3JMT2=AARhwbc%2BrY3jTVzX8bD=aJnfA@mail.gmail.com> <20111104004007.GA74831@dereel.lemis.com> <CACqU3MVk47XAMvwSSie9nj%2BegFVXMnGCGMphqxuuHhKi=sVx2A@mail.gmail.com> <20111104015559.GE74831@dereel.lemis.com> <CAGjvUo6q3qYe40JpzgLK9ULUHQ2fR1X6uzB=mG3P5rq6_DWd2w@mail.gmail.com> <CACqU3MVVV=rBz4EyzF5LL8da8TO9iAG5ppa6o=0SrxswUMQ_4Q@mail.gmail.com>
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Hello, Arnaud.
You wrote 4 =ED=EE=FF=E1=F0=FF 2011 =E3., 6:30:18:
> $89, 700MHz Cortex A8, 256MB DRR2, micro-SD. However, do not expect
> being able to run FreeBSD on it before a few years :)
What is so special about A8? We have some ARM code in tree, is Cortex
SO different from previous architectures? As far as I understand, main
problem in such platforms is different perefireal devices on each next
chop and board, which doesn't have "common denominator" like PCI bus
or other standard pieces, which helps a lot on PC (x86, amd64) architecture.
BTW, we have infrastructure for crypto accelerators ;-)
And what about NUMA... I know only one (almost-general-purpose) OS,
which has full support for NUMA. It is Sun^WOracle Solaris. Ant it
does it very well (not to forget about boxes like SunFire 25K with 72
2-core sockets at, as fa as I remember, 18 processor-memory boards).
I participated in project, which added NUMA support to Sun JVM
HotSpot, and Solaris was only one which gives us all needed
information -- nor Linux nor Windows either had not needed API two
years ago, and as far as I know, there is no big changes in this area
for them (but I could be wrong).
So, I cannot say, that FreeBSD is seriously behind the pack in NUMA suppor=
t.
--=20
// Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>
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