2.6.0-test1: Laptop runs hot, short battery life

From: Peter Chubb (peter@chubb.wattle.id.au)
Date: Tue Jul 22 2003 - 05:59:12 EST

        Under recent 2.5 kernels, my laptop runs a lot hotter than
under 2.4.20 -- the fans seem to go continuously, the disc never
powers down, and consequently battery life is around half what it is
with 2.4.20.

I'm using XFS, mounted with the `noatime' option, and a 5-minute
xfs_sync value, in both cases.

The laptop has ACPI only, no APM. On battery, the processor (a 2GHz
Pentium 4) is dropped to 1GHz and put into ACPI C3 state.

Does anyone have any ideas about what's changed, and how it can be
fixed to get better battery life again? Maybe XFS is
syncing its logs more often, or something.

Dr Peter Chubb  http://www.gelato.unsw.edu.au  peterc AT gelato.unsw.edu.au
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This archive was generated by hypermail 2b29 : Wed Jul 23 2003 - 22:00:46 EST