On Tue, Feb 26, 2008 at 10:42 AM, Ravikiran Thirumalai <[EMAIL PROTECTED]> wrote: > On Mon, Feb 25, 2008 at 09:27:42PM -0800, Yinghai Lu wrote: > >On Mon, Feb 25, 2008 at 8:05 PM, Ravikiran Thirumalai <[EMAIL PROTECTED]> > wrote: > >> On Tue, Feb 26, 2008 at 04:46:25AM +0100, Andi Kleen wrote: > >> > >> > > > >> >If you can't support that in your hardware you're supposed > >> >to clear it. > >> > >> Hmm! How would a hardware vendor do that? That doesn't seem to be clear > in > >> the BKDG. (Well, this is the problem with undocumented features :() > >> > >any good sign for APIC_clustered box? there is apicid between cpus > >even all cpu are quadcore and fully populated? > > I would suggest checking the SLIT distances -- On AMD boxes, if you have > three > different distances between nodes, then that system would be multiboard, > and there is no way TSCs can be synced. On Intel boxes, if there are two > different distances between nodes, then this would be a multi board/multi > chassi box and TSCs won't be synced. This is a more generic solution and > should work on Summit/Unisys boxes as well. (I am ignoring Intel CSI for > now. It might need the same treatment as AMD)
1. if acpi=off ? 2. some system will be treated wrong. my four sockets system ACPI: SLIT: nodes = 4 10 13 13 16 13 10 16 13 13 16 10 13 16 13 13 10 my eight sockets system ACPI: SLIT: nodes = 8 10 12 12 14 14 14 14 16 12 10 14 12 14 14 12 14 12 14 10 14 12 12 14 14 14 12 14 10 12 12 14 14 14 14 12 12 10 14 12 14 14 14 12 12 14 10 14 12 14 12 14 14 12 14 10 12 16 14 14 14 14 12 12 10 YH -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
