Re: ULE status, invalid load, buildkernel times.

On Sun, Jul 22, 2007 at 01:48:46PM +0200, Milos Vyletel wrote:
> On Sun, Jul 22, 2007 at 04:06:47AM -0700, Peter Wemm wrote:
> > On Sunday 22 July 2007, Milos Vyletel wrote:
> > > On Sat, Jul 21, 2007 at 05:55:08PM -0700, Jeff Roberson wrote:
> > > > I have a patch available at:
> > > >
> > > > http://people.freebsd.org/~jeff/ulehtt.diff
> > > >
> > > > This resolves issues in the code that handles HTT enabled
> > > > processors and also adds some ULE information to bootverbose on SMP
> > > > systems.  Peter Wemm has a seperate patch that fixes a bug where
> > > > some amd64 cpus were still being misidentified as HTT.  Those of
> > > > you with invalid loads either have Hyper-threading CPUs or
> > > > misidentified amd cores.  You should expect slightly poorer
> > > > performance as long as your cores are misidentified but the bad
> > > > loads should be fixed.
> > > >
> > > > I also believe that the buildkernel/world times are now
> > > > significantly improved.  If this is not the case for you please
> > > > send a mail.  Any other performance data is appreciated.
> > > >
> > > > Thanks,
> > > > Jeff
> > >
> > > Hi,
> > >
> > > can you please point us to refered Peter Wemm's patch too? I can't
> > > find it with google or on ~peter/.
> > 
> > You can extract it from here:
> > 
> > http://lists.freebsd.org/pipermail/p4-projects/2007-July/020058.html
> > 
> > Sorry I don't have it in a more convenient format.. I'm about to fall 
> > asleep on my keyboard. :)
> > 
> > Cheers,
> > -Peter
> > 
> 
> No problem,
> 
> I've extracted it and made a patch. If someone is intrested, it's on
> 
> http://rulez.sk/~mv/cpu.patch
> 
Well, i've just updated my kernel and it paniced right after identifying cpu.

CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ (2205.01-MHz K8-class CPU)
  Origin = "AuthenticAMD"  Id = 0x20f32  Stepping = 2
  Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
  Features2=0x1<SSE3>
  AMD Features=0xe2500800<SYSCALL,NX,MMX+,FFXSR,LM,3DNow!+,3DNow!>
  AMD Features2=0x3<LAHF,CMP>
  Cores per package: 2
usable memory = 3211776000 (3062 MB)
avail memory  = 3105628160 (2961 MB)
kernel trap 12 with interrupts disabled


Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0x310
fault code              = supervisor read data, page not present
instruction pointer     = 0x8:0xffffffff8033953c
stack pointer           = 0x10:0xffffffff80855c70
frame pointer           = 0x10:0xffffffff80855c80
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = resume, IOPL = 0
current process         = 0 ()

this is output from from dmesg.

Thanks for suggestions.
Milos