Re: Are all cores unlocked?

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On Wed, Sep 22, 2010 at 09:26:02AM -0700, JD wrote:
> 
> 
> On 09/22/2010 06:05 AM, Terry Polzin wrote:
> > cat /proc/cpuinfo
> > processor	: 0
> > vendor_id	: AuthenticAMD
> > cpu family	: 16
> > model		: 4
> > model name	: AMD Phenom(tm) II X2 555 Processor
> > stepping	: 3
> > cpu MHz		: 800.000
> > cache size	: 512 KB
> > physical id	: 0
> > siblings	: 2
> > core id		: 0
> > cpu cores	: 2
> > apicid		: 0
> > initial apicid	: 0
> > fdiv_bug	: no
> > hlt_bug		: no
> > f00f_bug	: no
> > coma_bug	: no
> > fpu		: yes
> > fpu_exception	: yes
> > cpuid level	: 5
> > wp		: yes
> > flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
> > pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt
> > pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc nonstop_tsc extd_apicid
> > pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm
> > sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt npt lbrv svm_lock
> > nrip_save
> > bogomips	: 6399.37
> > clflush size	: 64
> > cache_alignment	: 64
> > address sizes	: 48 bits physical, 48 bits virtual
> > power management: ts ttp tm stc 100mhzsteps hwpstate
> >
> > processor	: 1
> > vendor_id	: AuthenticAMD
> > cpu family	: 16
> > model		: 4
> > model name	: AMD Phenom(tm) II X2 555 Processor
> > stepping	: 3
> > cpu MHz		: 3200.000
> > cache size	: 512 KB
> > physical id	: 0
> > siblings	: 2
> > core id		: 1
> > cpu cores	: 2
> > apicid		: 1
> > initial apicid	: 1
> > fdiv_bug	: no
> > hlt_bug		: no
> > f00f_bug	: no
> > coma_bug	: no
> > fpu		: yes
> > fpu_exception	: yes
> > cpuid level	: 5
> > wp		: yes
> > flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
> > pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt
> > pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc nonstop_tsc extd_apicid
> > pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm
> > sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt npt lbrv svm_lock
> > nrip_save
> > bogomips	: 6400.39
> > clflush size	: 64
> > cache_alignment	: 64
> > address sizes	: 48 bits physical, 48 bits virtual
> > power management: ts ttp tm stc 100mhzsteps hwpstate
> >
> >
> 
> On my notebook, which has an old 2.2 GHz athlon65 uniicore (3700+),
> cpuinfo shows cpu MHz as 798.103
> 
> Does that mean that as I am typing this message, the cpu is running
> at only 790MHz??
> How an I speed it up?
> 

I noticed that too. here's /proc/cpuinfo (for one of the cores) on my
PhenomII X2 550 (black edition), not overclocked:

processor       : 1
vendor_id       : AuthenticAMD
cpu family      : 16
model           : 4
model name      : AMD Phenom(tm) II X2 550 Processor
stepping        : 2
cpu MHz         : 3100.000
cache size      : 512 KB
physical id     : 0
siblings        : 2
core id         : 1
cpu cores       : 2
apicid          : 1
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 5
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc nonstop_tsc pni cx16 popcnt lahf_lm cmp_legacy svm extapic cr8legacy abm sse4a misalignsse 3dnowprefetch osvw ibs ts ttp tm stc 100mhzsteps hwpstate [8]
bogomips        : 6228.99

and it shows the correct cpu MHZ. However, I note that the bogomips shown
by yours is slightly higher than mine, which would correspond to the 3200 Mhz
clock speed. So, I don't understand why yours shows 800 while mine shows
the true rated clock speed. If yours was really underclocked by a factor
of 4 (which would be the case if it were actually running at 800 Mhz) the
bogomips wouldn't be what you're getting. 

I wonder if it's an artifact of how the BIOS reports info to the kernel?...

-- 
---- Fred Smith -- fredex@xxxxxxxxxxxxxxxxxxxxxx -----------------------------
                       I can do all things through Christ 
                              who strengthens me.
------------------------------ Philippians 4:13 -------------------------------
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