lkml.org 
[lkml]   [2008]   [May]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject2.6.25.x: Wrong CPU frequency (cpufreq table) with p4-clockmod
Date
Hi list,

I recently upgraded one of my servers from 2.6.24.2 to 2.6.25. This is
more or less a basic fileserver that also does some compilations from
time to time.

cat /proc/cpuinfo from 2.6.24.2:

processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 1
model name : Intel(R) Pentium(R) 4 CPU 1.70GHz
stepping : 2
cpu MHz : 425.000
cache size : 256 KB
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 pebs bts
sync_rdtsc
bogomips : 3401.38
clflush size : 64

scaling_available_frequencies (p4-clockmod): 425000 637500 850000
1062500 1275000 1487500 1700000

Since the server is idling most of the time I enabled the ondemand
governor and installed p4-clockmod. I read that this is not the best
solution but acpi-cpufreq is not working for me.

Everything was good with 2.6.24. After switching to to 2.6.25 I have
the following output.

cat /proc/cpuinfo from 2.6.25.4:

processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 1
model name : Intel(R) Pentium(R) 4 CPU 1.70GHz
stepping : 2
cpu MHz : 3450.000
cache size : 256 KB
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 pebs bts
bogomips : 3402.06
clflush size : 64

scaling_available_frequencies (p4-clockmod): 3450000 5175000 6900000
8625000 10350000 12075000 13800000

The scaling is working but the frequencies are way of. Every value is
multiplied by ~8.12.
I get the same result with 2.6.25 and 2.6.25.4.
I am not sure if this is only a display related problem, or if
something more serious is causing this.

Please CC me on any replies since I am not subscribed to the list.

Kind regards,
Michael







[unhandled content-type:application/pkcs7-signature]
\
 
 \ /
  Last update: 2008-05-30 15:55    [W:0.058 / U:1.028 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site