From: Pavel Machek <pavel@ucw.cz>
To: Marc Ballarin <Ballarin.Marc@gmx.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Power consumption HZ250 vs. HZ1000
Date: Mon, 25 Jul 2005 17:53:22 +0200 [thread overview]
Message-ID: <20050725155322.GA1046@openzaurus.ucw.cz> (raw)
In-Reply-To: <20050725161333.446fe265.Ballarin.Marc@gmx.de>
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
next prev parent reply other threads:[~2005-07-25 15:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-25 14:13 Marc Ballarin
2005-07-25 15:53 ` Pavel Machek [this message]
2005-07-25 19:02 ` Marc Ballarin
2005-07-26 23:28 ` dean gaudet
2005-07-27 7:51 ` Tony Lindgren
2005-07-27 8:00 ` Pavel Machek
2005-07-27 11:20 ` Tony Lindgren
2005-07-25 20:14 ` Bill Davidsen
2005-07-26 5:08 Brown, Len
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