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Bogomips ? CPU - speed - indicator?
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MaDDeePee
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Joined: 18 Aug 2004
Posts: 393
Location: Germany

PostPosted: Sun Mar 18, 2007 3:27 pm    Post subject: Bogomips ? CPU - speed - indicator? Reply with quote

Hi Freaks,

while running some mprimes and showing /proc/cpuinfo, i discovered my OLD Gentoo Box has MORE bogomips than my NEW :x
Could it be real that a 2.0 Ghz Woodcrest (333MhzFSB) with 4Mb cache perform WORSE than a 2.8 Ghz Prestonia (200MhzFSB) with 512KB Cache? Im confused ^^

Code:
processor       : 3
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Xeon(R) CPU            5110  @ 1.60GHz
stepping        : 6
cpu MHz         : 2000.251
cache size      : 4096 KB
physical id     : 3
siblings        : 2
core id         : 1
cpu cores       : 2
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe lm constant_tsc pni monitor ds_cpl vmx tm2 ssse3 cx16 xtpr dca lahf_lm
bogomips        : 4000.52

<VS>
Code:
processor       : 3
vendor_id       : GenuineIntel
cpu family      : 15
model           : 2
model name      : Intel(R) Xeon(TM) CPU 1.60GHz
stepping        : 9
cpu MHz         : 2813.195
cache size      : 512 KB
physical id     : 3
siblings        : 2
core id         : 0
cpu cores       : 1
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid xtpr
bogomips        : 5626.52


Last edited by MaDDeePee on Sun Mar 18, 2007 3:32 pm; edited 1 time in total
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Phenax
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Joined: 10 Mar 2006
Posts: 972

PostPosted: Sun Mar 18, 2007 3:30 pm    Post subject: Reply with quote

http://en.wikipedia.org/wiki/Bogomips
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MaDDeePee
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Joined: 18 Aug 2004
Posts: 393
Location: Germany

PostPosted: Sun Mar 18, 2007 3:39 pm    Post subject: Reply with quote

Phenax wrote:
http://en.wikipedia.org/wiki/Bogomips


Oh, the English one is BETTER than the German -> http://de.wikipedia.org/wiki/Bogomips

"It is not usable for performance comparison between different CPUs." is missing... or i haven't interpreted it right :(

Anyways - this list is missing the new cores and that system looks weird to me...
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Monkeh
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Joined: 06 Aug 2005
Posts: 1656
Location: England

PostPosted: Sun Mar 18, 2007 4:54 pm    Post subject: Reply with quote

Bogomips are a timing value. The higher your clock, the higher the bogomips number. It doesn't indicate performance in any way.
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