On Thu, May 31, 2012 at 08:28:34AM +0200, Tomas Bodzar wrote: > On Thu, May 31, 2012 at 3:45 AM, Juan Francisco Cantero Hurtado > <[email protected]> wrote: > > Hi. I've been using OpenBSD on my netbook daily for a few months. I was > > using apmd with the -C setting. My netbook is slow and the battery life > > is important, so 800Mhz (apmd -C) or 1600Mhz (apm -A) is not a big > > difference for me. > > > > Now I have a desktop computer with support for cpu speed scaling. In > > this case the options of apmd are very limited. If I use "-A" my cpu is > > always at 2700Mhz, wasting energy and heating my room (I live in the > > very sunny Extremadura :) ). If I use "-C", apm rarely raises the speed > > and the cpu is almost always at 800Mhz. > > > > This is important because when I open a web page with a lot of > > javascript, the browser is very slow. Also when I compile something with > > "make -j1", apmd doesn't raise the speed of my CPU, I need use "make > > -j4" for raising the cpu speed to 2700Mhz. > > What shows top, vmstat, systat about %sys, %usr, %idle during that > time? Because you can have 800MHz of CPU, but %usr and/or %sys can be > eg. only 20% so there's no reason to switch to higher frequency.
I've been using top for to check %idle. The problem is that apmd calculates the average idle. If your system has two cores, the first with 98%idle and the second with 20%idle, apmd doesn't raise the cpu speed. Use limits less strict is the simplest workaround for me. Cheers. -- Juan Francisco Cantero Hurtado http://juanfra.info
