From: Paul Mackerras <paulus@samba.org>
To: mlan@cpu.lu
Cc: hozer@drgw.net, linuxppc-dev@lists.linuxppc.org
Subject: Re: About TAU (and ICTC)
Date: Mon, 20 Aug 2001 09:57:16 +1000 (EST) [thread overview]
Message-ID: <15232.21084.255152.281121@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <200108191559.RAA01163@piglet.grunz.lu>
Michel Lanners writes:
> My preliminary test indicate that settig ICTC to 33 (0x21) has no
> noticeable effect on an idle machine. While running an endless kernel
> compile loop, however, it makes the CPU temperature drop from 19C to
> 15-17C, and increases battery life by about 20 min.
How long did each kernel compile take, with ICTC=0 and ICTC=0x21, and
what was the average current consumption in each case?
I would expect that the total battery charge used could well be higher
with ICTC=0x21 than with ICTC=0, particularly if you had the LCD
backlight on during the compile. :)
Regards,
Paul.
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
prev parent reply other threads:[~2001-08-19 23:57 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-19 10:03 About TAU Michel Lanners
2001-08-19 15:59 ` About TAU (and ICTC) Michel Lanners
2001-08-19 19:51 ` Timothy A. Seufert
2001-08-19 20:08 ` Tony Mantler
2001-08-19 20:43 ` Geert Uytterhoeven
2001-08-19 21:23 ` Tony Mantler
2001-08-19 22:02 ` Benjamin Herrenschmidt
2001-08-19 23:57 ` Paul Mackerras [this message]
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