Messages in this thread | | | Date | Mon, 25 Jul 2005 17:53:22 +0200 | From | Pavel Machek <> | Subject | Re: Power consumption HZ250 vs. HZ1000 |
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Hi!
> I did some measurements in order to compare power drain with HZ250 and > HZ1000. > To measure the actual drain, I used the "smart" battery's internal measurement. > (Available with acpi-sbs in /proc/acpi/sbs/SBS0/SB0/state.) > No clue how accurate this is. > > Here some battery details, in case someone knows: > charge reporting error: 25% > SB specification: v1.1 (with PEC) > manufacturer name: Panasonic > manufacture date: 2004-11-27 > device name: 02ZL > device chemistry: Lion > > Kernel: 2.6.13-rc3-mm1 + acpi-sbs > > CPU: > cpu family : 6 > model : 13 > model name : Intel(R) Pentium(R) M processor 1.60GHz > stepping : 6 > > The "ondemand" governor was running, using acpi_cpufreq. (Idle at 600MHz). > > Systems was running X11/KDE to get a more or less realistic scenario. No > cron jobs, network traffic or additional applications. WLAN and built-in > display were disabled completely, all fans and LEDs were off, internal hard > disc was running. Additional peripherals: external keyboard, mouse, display > and externally-powered hard disk (USB).
USB devices prevent entering C3 and any interesting powersaving, try without USB... -- 64 bytes from 195.113.31.123: icmp_seq=28 ttl=51 time=448769.1 ms
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