Gentoo Archives: gentoo-amd64

From: Thanasis <thanasis@××××××××××.org>
To: owner-linux-kernel@×××××××××××.org, gentoo-amd64@l.g.o
Subject: [gentoo-amd64] Is /proc/cpuinfo showing the actual frequency ?
Date: Thu, 19 Feb 2009 07:41:08
Message-Id: 499D0D0E.9020608@asyr.hopto.org
1 # uname -a
2 Linux wolfdale 2.6.28-gentoo-r2 #1 SMP PREEMPT Wed Feb 18 13:53:22 EET
3 2009 x86_64 Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz GenuineIntel
4 GNU/Linux
5
6 Overclocked the core 2 duo (E8400) from 3 to 4GHz using motherboard
7 BIOS settings. In mswindblows I can see the overclocked frequency
8 (when cpu is under load), in linux /proc/cpuinfo never shows beyond the
9 stock 3GHz value.
10
11 Q: Is /proc/cpuinfo showing the actual frequency?
12
13 # cat cpuinfo
14 processor : 0
15 vendor_id : GenuineIntel
16 cpu family : 6
17 model : 23
18 model name : Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz
19 stepping : 10
20 cpu MHz : 2997.000
21 cache size : 6144 KB
22 physical id : 0
23 siblings : 2
24 core id : 0
25 cpu cores : 2
26 apicid : 0
27 initial apicid : 0
28 fpu : yes
29 fpu_exception : yes
30 cpuid level : 13
31 wp : yes
32 flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
33 pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm
34 constant_tsc arch_perfmon pebs bts rep_good pni dtes64 monitor ds_cpl
35 vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm tpr_shadow
36 vnmi flexpriority
37 bogomips : 8099.96
38 clflush size : 64
39 cache_alignment : 64
40 address sizes : 36 bits physical, 48 bits virtual
41 power management:
42
43 processor : 1
44 vendor_id : GenuineIntel
45 cpu family : 6
46 model : 23
47 model name : Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz
48 stepping : 10
49 cpu MHz : 2997.000
50 cache size : 6144 KB
51 physical id : 0
52 siblings : 2
53 core id : 1
54 cpu cores : 2
55 apicid : 1
56 initial apicid : 1
57 fpu : yes
58 fpu_exception : yes
59 cpuid level : 13
60 wp : yes
61 flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
62 pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm
63 constant_tsc arch_perfmon pebs bts rep_good pni dtes64 monitor ds_cpl
64 vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm tpr_shadow
65 vnmi flexpriority
66 bogomips : 8099.74
67 clflush size : 64
68 cache_alignment : 64
69 address sizes : 36 bits physical, 48 bits virtual
70 power management:

Replies

Subject Author
Re: [gentoo-amd64] Is /proc/cpuinfo showing the actual frequency ? Martin Herrman <martin@×××××××.nl>
Re: [gentoo-amd64] Is /proc/cpuinfo showing the actual frequency ? Paul Hartman <paul.hartman+gentoo@×××××.com>
Re: [gentoo-amd64] Is /proc/cpuinfo showing the actual frequency ? Justin <justin@×××××××××.net>
[gentoo-amd64] Re: Is /proc/cpuinfo showing the actual frequency ? Nikos Chantziaras <realnc@×××××.de>