On Wed, Sep 22, 2010 at 09:54:51AM -0700, Michael Miles wrote:
> fred smith wrote:
> > 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?...
> >
> >
> As far as the speed being low the units have power saving features so
> when your not at load the processors will clock down.
> Disable all the power saving features in the Bios and you will see your
> speed go up to normal.
>
> C2 features and C3 will lower voltage and speed and make sure Cool and
> quiet is disabled
>
ah. that explains it... I've got a Folding At Home client running on
each core, so they're cranking away for all they're worth.
--
---- Fred Smith -- fredex@xxxxxxxxxxxxxxxxxxxxxx -----------------------------
"For him who is able to keep you from falling and to present you before his
glorious presence without fault and with great joy--to the only God our Savior
be glory, majesty, power and authority, through Jesus Christ our Lord, before
all ages, now and forevermore! Amen."
----------------------------- Jude 1:24,25 (niv) -----------------------------
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