Gentoo Archives: gentoo-amd64

From: Paul Hartman <paul.hartman+gentoo@×××××.com>
To: gentoo-amd64@l.g.o
Subject: Re: [gentoo-amd64] Is /proc/cpuinfo showing the actual frequency ?
Date: Thu, 19 Feb 2009 16:20:46
Message-Id: 58965d8a0902190820y2c5c53dfqb07095be04a678a8@mail.gmail.com
In Reply to: [gentoo-amd64] Is /proc/cpuinfo showing the actual frequency ? by Thanasis
1 2009/2/19 Thanasis <thanasis@××××××××××.org>:
2 > # uname -a
3 > Linux wolfdale 2.6.28-gentoo-r2 #1 SMP PREEMPT Wed Feb 18 13:53:22 EET
4 > 2009 x86_64 Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz GenuineIntel
5 > GNU/Linux
6 >
7 > Overclocked the core 2 duo (E8400) from 3 to 4GHz using motherboard
8 > BIOS settings. In mswindblows I can see the overclocked frequency
9 > (when cpu is under load), in linux /proc/cpuinfo never shows beyond the
10 > stock 3GHz value.
11 >
12 > Q: Is /proc/cpuinfo showing the actual frequency?
13
14 On my overclocked E6600, it does show the overclocked frequency for me.
15
16 uname -a:
17 Linux e6600 2.6.28-gentoo-r1 #2 SMP PREEMPT Mon Jan 19 19:30:33 CST
18 2009 x86_64 Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz GenuineIntel
19 GNU/Linux
20
21 /proc/cpuinfo:
22 processor : 0
23 vendor_id : GenuineIntel
24 cpu family : 6
25 model : 15
26 model name : Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz
27 stepping : 6
28 cpu MHz : 2999.692
29 cache size : 4096 KB
30 physical id : 0
31 siblings : 2
32 core id : 0
33 cpu cores : 2
34 apicid : 0
35 initial apicid : 0
36 fpu : yes
37 fpu_exception : yes
38 cpuid level : 10
39 wp : yes
40 flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
41 mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
42 syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni dtes64
43 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm tpr_shadow
44 bogomips : 5999.38
45 clflush size : 64
46 cache_alignment : 64
47 address sizes : 36 bits physical, 48 bits virtual
48 power management:
49
50 processor : 1
51 vendor_id : GenuineIntel
52 cpu family : 6
53 model : 15
54 model name : Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz
55 stepping : 6
56 cpu MHz : 2999.692
57 cache size : 4096 KB
58 physical id : 0
59 siblings : 2
60 core id : 1
61 cpu cores : 2
62 apicid : 1
63 initial apicid : 1
64 fpu : yes
65 fpu_exception : yes
66 cpuid level : 10
67 wp : yes
68 flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
69 mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
70 syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni dtes64
71 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm tpr_shadow
72 bogomips : 5999.70
73 clflush size : 64
74 cache_alignment : 64
75 address sizes : 36 bits physical, 48 bits virtual
76 power management: