bsquirle Posted April 12, 2004 Share Posted April 12, 2004 Hi, I've been using linux for some time now. And for about a month or 3 on this laptop. But I just noticed something. I was thinking about changing the cpu voltage and multiplier to have more battery time when I got to the conclusion that my linux wasn't running at full speed. I wanted to know how fast my cpu was running so I entered this in the console: cat /proc/sys/cp/0/speed It just returned 0. So I started a Windows program (WCPU) (under linux) to see my cpu speed. And it told me I was running at 796.10 MHz :blink: . My laptop is an Acer Aspire 1353LC with an AMD Athlon XP-M 2400 GHz processor using PowerNOW! My linux version is: Mandrake 9.2 Kernel: 2.4.22-10mdk I might give kernel 2.6 a try later. I've compiled it, but it has some errors when it boots. Is there anything I can do about this??? Thanks in advance, the Blue Squirle Link to comment Share on other sites More sharing options...
kongit Posted April 12, 2004 Share Posted April 12, 2004 If you just noticed it and this decrease in speed is good for your battery, whats the problem :p . Yeah, actually I would just suggest recompiling the 2.4 thats works. jumping up to 2.6 with mandrake is difficult Link to comment Share on other sites More sharing options...
Tinker01 Posted April 12, 2004 Share Posted April 12, 2004 AMD power now is doing exactly what it supposed to. My AMD 1600+ laptop, reports 595 MHz. during idle. It reports 1400 MHz. during full load. That way it uses less power. Link to comment Share on other sites More sharing options...
zivan56 Posted April 12, 2004 Share Posted April 12, 2004 Try somthing like: echo "1" >> /proc/sys/cpu/0/speed This will throttle the cpu one level. There should be a file under /proc/sys/cpu/0 explaining what levels the laptop can switch to. Link to comment Share on other sites More sharing options...
markwolfe Veteran Posted April 13, 2004 Veteran Share Posted April 13, 2004 Am I missing something here? I use cat /proc/cpuinfo | grep MHz to get CPU frequency... :unsure: Link to comment Share on other sites More sharing options...
bsquirle Posted April 13, 2004 Author Share Posted April 13, 2004 TinkerO1: Powernow isn't doing what it's supposed to do because when my Linux is at full load, it still uses 796.10 MHz I've tested this while compiling in tty 3, running top (which displays my cpu load as around 98%) in tty2 and running cat /proc/cpuinfo in tty1. markjensen: the command you gave worked, thx, now I can see the cpu speed under linux I'm using my laptop with the psu attached so I want it to go fast now. Link to comment Share on other sites More sharing options...
kemical Posted April 13, 2004 Share Posted April 13, 2004 it does sound like cpu throttling that mandrake isn't taking advantage of Link to comment Share on other sites More sharing options...
bsquirle Posted April 13, 2004 Author Share Posted April 13, 2004 it does sound like cpu throttling that mandrake isn't taking advantage of Is there something I can do to make mandrake use it? Link to comment Share on other sites More sharing options...
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