Date: Thu, 11 Oct 2007 14:40:25 -0700 From: "Thomas Ching" <tching@arraynetworks.net> To: "Gary Palmer" <gpalmer@freebsd.org> Cc: freebsd-smp@FreeBSD.org, Julian Elischer <julian@elischer.org> Subject: RE: Supermicro H8DAE-2 support Message-ID: <BBBF2B6511353C4CAABD39BFAC8CB4F101604607@Exchange.arraynetworks.net> In-Reply-To: <20071011213722.GA54662@in-addr.com>
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That's very helpful, thanks. Thomas -----Original Message----- From: Gary Palmer [mailto:gpalmer@freebsd.org]=20 Sent: Thursday, October 11, 2007 2:37 PM To: Thomas Ching Cc: Julian Elischer; freebsd-smp@FreeBSD.org Subject: Re: Supermicro H8DAE-2 support On Thu, Oct 11, 2007 at 02:30:19PM -0700, Thomas Ching wrote: > Thanks, it's very interesting regarding your mention of SMP support = (again I am new to this so I don't know the history that well). >=20 > According to 4.5 release notes, it does: = http://www.freebsd.org/releases/4.5R/hardware-i386.html Although the 3.x and 4.x branches of FreeBSD support multi-CPU = operation, they only supported running multiple processes in user space at the same time. You could not have multiple CPUs in the kernel at the same time due to the "Giant" lock that serialised access to the kernel. > In either case, we do not intend to run on muti cores until we migrate = to 6.2 so it's not a problem for now. >=20 > Thomas >=20 > -----Original Message----- > From: Julian Elischer [mailto:julian@elischer.org]=20 > Sent: Thursday, October 11, 2007 2:19 PM > To: Thomas Ching > Cc: freebsd-smp@FreeBSD.org > Subject: Re: Supermicro H8DAE-2 support >=20 > Thomas Ching wrote: > > Hi, Julian: > >=20 > > Thanks for the useful info; I think I will start with Vanilla 4.5 on = the board first to see if it's even possible. If no luck, I will try = 4.11.=20 > >=20 > > Regarding the changes, I am actually new to the company and I do not = know all the history and details, all I am told is "massive". > >=20 > > I think mostly are on the TCP stack. I will learn more about it in = the next few weeks. >=20 > "Massive" is relative. > 4.x doesn't support using > 1 CPU in the kernel at one time. > So unless this is what your changes do, it means you can't use your = 2nd CPU for networking.. >=20 > anyhow, good luck and do come back if you have problems. >=20 > >=20 > > Again appreciate your fast responses and ideas/suggestions. > >=20 > > Thomas > >=20 > > -----Original Message----- > > From: Julian Elischer [mailto:julian@elischer.org]=20 > > Sent: Thursday, October 11, 2007 11:48 AM > > To: Thomas Ching > > Cc: freebsd-smp@FreeBSD.org > > Subject: Re: Supermicro H8DAE-2 support > >=20 > > Thomas Ching wrote: > >> Hi, Julian: > >> > >> Thanks for your response. Our existing products (which heavily = changed the kernel code) were developed based on the 4.5 kernel that's = why we need to stick with it for a short while. > >> > >> Is there anything I can learn on the tricks you mentioned in your = email? I am open to examine all possibilities. > >> > >> Thanks > >> Thomas > >> > >> -----Original Message----- > >> From: Julian Elischer [mailto:julian@elischer.org]=20 > >> Sent: Thursday, October 11, 2007 10:36 AM > >> To: Thomas Ching > >> Cc: freebsd-smp@FreeBSD.org > >> Subject: Re: Supermicro H8DAE-2 support > >> > >> Thomas Ching wrote: > >>> Hi, > >>> > >>> > >>> > >>> I am a newbie to this so I apologize if I did not follow any = protocol > >>> that I am supposed to. > >>> > >>> > >>> > >>> I am porting FreeBSD 4.5 to this board and I am just wondering if > >>> anyone has any information that I can read. I am really concerned > >>> about given how new the board is and 4.5 would probably not run on > >>> it. > >>> > >> Ok so explain why it needs to be 4.5? > >> > >> Assuming it does, you may be able to run it straight away > >> or at worst with just a couple of tweeks, > >> but there are tricks you may not know about to avoid running new = hardware > >> on old systems. > >> > >>> It has to be 4.5 for legacy reasons. > >> why? > >> > >> explain this in detail. > >=20 > > It's a pitty you have kernel changes because if you had just = userland requirements, > > I'd run a 6.2 system and make a 4.5 jail to match the apps. > >=20 > > Since you have kernel changes that won't work. however I'd still = suggest=20 > > moving up to at least 4.11. > > The changes between 4.5 and 4.11 were not that great, but a lot of = newer hardware > > was supported. Your kernel changes will nearly all apply with = minimal change=20 > > (if any at all), but you may have a chance to get some newer = hardware working easier. > > There are also security and bug fixes.. in fact I'd go for a = RELENG_4 > > system (i.e. from the 4 branch but after 4.11.. you compile it = yourself). > >=20 > > what KIND of changes? (some changes can be ported forward to 5.x = really easy too. > > It depends on what kind they are and where they are. > >=20 > >=20 > >=20 > >=20 > >=20 > >=20 > >>> > >>> Thanks > >>> > >>> Thomas > >>> > >>> > >>> No virus found in this outgoing message. Checked by AVG Free = Edition. > >>> Version: 7.5.488 / Virus Database: 269.14.8/1063 - Release Date: > >>> 10/11/2007 9:11 AM > >>> > >>> _______________________________________________=20 > >>> freebsd-smp@freebsd.org mailing list=20 > >>> http://lists.freebsd.org/mailman/listinfo/freebsd-smp To = unsubscribe, > >>> send any mail to "freebsd-smp-unsubscribe@freebsd.org" > >> > >> No virus found in this incoming message. > >> Checked by AVG Free Edition.=20 > >> Version: 7.5.488 / Virus Database: 269.14.8/1063 - Release Date: = 10/11/2007 9:11 AM > >> =20 > >> > >> No virus found in this outgoing message. > >> Checked by AVG Free Edition.=20 > >> Version: 7.5.488 / Virus Database: 269.14.8/1063 - Release Date: = 10/11/2007 9:11 AM > >> =20 > >=20 > >=20 > > No virus found in this incoming message. > > Checked by AVG Free Edition.=20 > > Version: 7.5.488 / Virus Database: 269.14.8/1063 - Release Date: = 10/11/2007 9:11 AM > > =20 > >=20 > > No virus found in this outgoing message. > > Checked by AVG Free Edition.=20 > > Version: 7.5.488 / Virus Database: 269.14.8/1063 - Release Date: = 10/11/2007 9:11 AM > > =20 >=20 >=20 > No virus found in this incoming message. > Checked by AVG Free Edition.=20 > Version: 7.5.488 / Virus Database: 269.14.8/1063 - Release Date: = 10/11/2007 9:11 AM > =20 >=20 > No virus found in this outgoing message. > Checked by AVG Free Edition.=20 > Version: 7.5.488 / Virus Database: 269.14.8/1063 - Release Date: = 10/11/2007 9:11 AM > =20 > _______________________________________________ > freebsd-smp@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-smp > To unsubscribe, send any mail to "freebsd-smp-unsubscribe@freebsd.org" >=20 >=20 No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.488 / Virus Database: 269.14.8/1063 - Release Date: = 10/11/2007 9:11 AM =20 No virus found in this outgoing message. Checked by AVG Free Edition.=20 Version: 7.5.488 / Virus Database: 269.14.8/1063 - Release Date: = 10/11/2007 9:11 AM =20
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