Laptop battery life on FreeBSD

2009-01-27 Thread Shawn Badger
Hi, I recently installed FreeBSD 7.1 on my laptop, replacing Arch Linux and I noticed a significant drop in my battery life (from ~3 hours to ~1.5 hours). I realize that Linux has their tickless kernel, which I am sure explains the difference, but my question is... is there anything I can do

Re: Laptop battery life on FreeBSD

2009-01-27 Thread Chuck Swiger
On Jan 27, 2009, at 3:19 PM, Shawn Badger wrote: I'm somewhat of a minimalist and don't use X11. I've disabled the bluetooth adapter, but frequently use my wireless adapter (intel pro/ 2200bg). Does anyone have any suggestions that could potentially extend my battery life? Have you tried

Re: Laptop battery life on FreeBSD

2009-01-27 Thread Shawn Badger
Chuck Swiger wrote: On Jan 27, 2009, at 3:19 PM, Shawn Badger wrote: I'm somewhat of a minimalist and don't use X11. I've disabled the bluetooth adapter, but frequently use my wireless adapter (intel pro/2200bg). Does anyone have any suggestions that could potentially extend my battery

Re: Laptop battery life on FreeBSD

2009-01-27 Thread Chuck Swiger
On Jan 27, 2009, at 4:49 PM, Shawn Badger wrote: Have you tried reducing HZ to 100 (put kern.hz=100 in /boot/ loader.conf and reboot)? Are you running powerd? Look into sysctl hw.acpi and sysctl debug.cpufreq Thanks for the ideas Chuck. I lowered kern.hz to 100 as you suggested (does

Re: Laptop battery life on FreeBSD

2009-01-27 Thread Shawn Badger
Chuck Swiger wrote: On Jan 27, 2009, at 4:49 PM, Shawn Badger wrote: Have you tried reducing HZ to 100 (put kern.hz=100 in /boot/loader.conf and reboot)? Are you running powerd? Look into sysctl hw.acpi and sysctl debug.cpufreq Thanks for the ideas Chuck. I lowered kern.hz to 100 as

Re: Laptop battery life on FreeBSD

2009-01-27 Thread Bruce Cran
On Tue, 27 Jan 2009 16:19:31 -0700 Shawn Badger shawnbad...@gmail.com wrote: Hi, I recently installed FreeBSD 7.1 on my laptop, replacing Arch Linux and I noticed a significant drop in my battery life (from ~3 hours to ~1.5 hours). I realize that Linux has their tickless kernel, which I am

Re: Laptop battery life on FreeBSD

2009-01-27 Thread Shawn Badger
Bruce Cran wrote: On Tue, 27 Jan 2009 16:19:31 -0700 Shawn Badger [1]shawnbad...@gmail.com wrote: Hi, I recently installed FreeBSD 7.1 on my laptop, replacing Arch Linux and I noticed a significant drop in my battery life (from ~3 hours to ~1.5 hours). I realize that Linux has their