kernel-x64-smp-multiprocessor-speed & bogomips problem in /proc/cpuinfo

kernel-x64-smp-multiprocessor-speed & bogomips problem in /proc/cpuinfo

[art]

kernel-x64-smp-multiprocessor-speed & bogomips problem in /proc/cpuinfo

$cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 43
model name      : AMD Athlon(tm) 64 X2 Dual Core Processor 4200+
stepping        : 1
cpu MHz         : 1000.000
cache size      : 512 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
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 lm 3dnowext 3dnow pni lahf_lm cmp_legacy
bogomips        : 2005.64
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp

processor       : 1
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 43
model name      : AMD Athlon(tm) 64 X2 Dual Core Processor 4200+
stepping        : 1
cpu MHz         : 1000.000
cache size      : 512 KB
physical id     : 0
siblings        : 2
core id         : 1
cpu cores       : 2
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
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 lm 3dnowext 3dnow pni lahf_lm cmp_legacy
bogomips        : 2005.64
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
-----------------------

dmesg

....
time.c: Using 3.579545 MHz WALL PM GTOD PM timer.
time.c: Detected 2204.635 MHz processor.
Console: colour VGA+ 80x25
Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes)
Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes)
Memory: 2052156k/2096064k available (2297k kernel code, 43520k  
reserved, 1131k data, 200k init)
Calibrating delay using timer specific routine.. 4412.42 BogoMIPS (lpj=2206214


xboom

art@usfltd.com

Re: kernel-x64-smp-multiprocessor-speed & bogomips problem in /proc/cpuinfo

[Dave Jones]

On Mon, Jun 19, 2006 at 06:31:34PM -0500, art@usfltd.com wrote:
 > kernel-x64-smp-multiprocessor-speed & bogomips problem in /proc/cpuinfo
 > 
 > $cat /proc/cpuinfo
 > processor       : 0
 > vendor_id       : AuthenticAMD
 > cpu family      : 15
 > model           : 43
 > model name      : AMD Athlon(tm) 64 X2 Dual Core Processor 4200+
 > stepping        : 1
 > cpu MHz         : 1000.000
 > cache size      : 512 KB
 > physical id     : 0
 > siblings        : 2
 > core id         : 0
 > cpu cores       : 2
 > fpu             : yes
 > fpu_exception   : yes
 > cpuid level     : 1
 > 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 lm 3dnowext 3dnow pni lahf_lm cmp_legacy
 > bogomips        : 2005.64
 > TLB size        : 1024 4K pages
 > clflush size    : 64
 > cache_alignment : 64
 > address sizes   : 40 bits physical, 48 bits virtual
 > power management: ts fid vid ttp
                        ^^^^^^^

Your cpu can (and is) scaling its speed & voltage to save power.
Bogomips will scale accordingly.

		Dave

-- 
http://www.codemonkey.org.uk

Re: kernel-x64-smp-multiprocessor-speed & bogomips problem in /proc/cpuinfo

[Robert Hancock]

art@usfltd.com wrote:
> kernel-x64-smp-multiprocessor-speed & bogomips problem in /proc/cpuinfo
> 
> $cat /proc/cpuinfo
> processor       : 0
> vendor_id       : AuthenticAMD
> cpu family      : 15
> model           : 43
> model name      : AMD Athlon(tm) 64 X2 Dual Core Processor 4200+
> stepping        : 1
> cpu MHz         : 1000.000
> cache size      : 512 KB
> physical id     : 0
> siblings        : 2
> core id         : 0
> cpu cores       : 2
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 1
> 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 lm 3dnowext 3dnow pni lahf_lm cmp_legacy
> bogomips        : 2005.64
> TLB size        : 1024 4K pages
> clflush size    : 64
> cache_alignment : 64
> address sizes   : 40 bits physical, 48 bits virtual
> power management: ts fid vid ttp

If the CPU supports clock frequency changes then this clock 
speed/BogoMIPS value may be correct at the time the file was viewed if 
CPU load was low.

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/