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DanielVartanov
n00b
Joined: 31 Aug 2009
Posts: 9
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 Posted: Thu Oct 29, 2009 6:31 am Post subject: AMD Athlon 3800+ processor works at just 1000Mhz frequency |
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Hi everyone,
I have AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ on my machine
Processor specs say that it should work at 2.0GHz frequency.
But /proc/cpuinfo tells that both cores work just at 1.0Ghz:
| Code: | $ cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 75
model name : AMD Athlon(tm) 64 X2 Dual Core Processor 3800+
stepping : 2
cpu MHz : 1000.000
cache size : 512 KB
...
processor : 1
...
cpu MHz : 1000.000 |
How can I increase actual frequency?
P.S. Please, don't tell me that two cores give 2.0GHz together  )))
Thanks |
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whiteghost
Guru
Joined: 26 Jul 2009
Posts: 374
Location: north dakota
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saellaven
l33t
Joined: 23 Jul 2006
Posts: 655
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| Posted: Thu Oct 29, 2009 7:23 am Post subject: |
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To see what governor you're currently using,
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
to set it to something more aggressive, run
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
that'll tell you what governors are available. For the most aggressive one,
echo performance >> /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
put that line in your /etc/conf.d/local.start to automatically set it on every boot.
Alternatively, if you compile your own kernels, you can set the default scheduler in your kernel
Power management and ACPI options --->
CPU Frequency scaling --->
Default CPUFreq governor
If you want to see what speeds are available for your CPU,
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
_________________
Ryzen 3700X, Asus Prime X570-Pro, 64 GB DDR4 3200, GeForce GTX 1660 Super
openrc-0.17, ~vanilla-sources, ~nvidia-drivers, ~gcc |
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DanielVartanov
n00b
Joined: 31 Aug 2009
Posts: 9
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| Posted: Thu Oct 29, 2009 8:32 am Post subject: |
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Thank you for your advice. Indeed, there were [Auto] in places of multipler an FSB frequency in BIOS. I set it to 10x and 200Mhz respectively, but cpuinfo still shows 1000MHz as core operating frequency.
Did I do something wrong? |
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DanielVartanov
n00b
Joined: 31 Aug 2009
Posts: 9
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| Posted: Thu Oct 29, 2009 8:36 am Post subject: |
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| saellaven wrote: | To see what governor you're currently using,
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
to set it to something more aggressive, run
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
that'll tell you what governors are available. For the most aggressive one,
echo performance >> /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
put that line in your /etc/conf.d/local.start to automatically set it on every boot.
Alternatively, if you compile your own kernels, you can set the default scheduler in your kernel
Power management and ACPI options --->
CPU Frequency scaling --->
Default CPUFreq governor
If you want to see what speeds are available for your CPU,
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies |
Thanks, I found these options in menuconfig, but will it really increase CPU frequency? |
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Jaglover
Watchman
Joined: 29 May 2005
Posts: 8291
Location: Saint Amant, Acadiana
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| Posted: Thu Oct 29, 2009 9:01 am Post subject: |
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cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
If this returns ondemand you are good, your CPU frequency will increase under load and drop when idle, reducing thermal stress and power consumption. This is what you want ... ?
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My Gentoo installation notes.
Please learn how to denote units correctly! |
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DanielVartanov
n00b
Joined: 31 Aug 2009
Posts: 9
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| Posted: Thu Oct 29, 2009 9:14 am Post subject: |
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| Jaglover wrote: | cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
If this returns ondemand you are good, your CPU frequency will increase under load and drop when idle, reducing thermal stress and power consumption. This is what you want ... ? |
It sounds very good, thank you for explanation |
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