The following bug has been logged online:
Bug reference: 5397
Logged by: Steve White
Email address: Stevan_White@hotmail.com
PostgreSQL version: 8.4.2
Operating system: Ubuntu 10.5 beta
Description: powertop reports excessive wakeups
Details:
This is a Samsung NC20. The goal is to use this machine for occasional
testing of a database, but to keep its power consumption minimal.
Intel powertop reports the second biggest cause of wakeups (after the
network device ath) is postgres:
Top causes for wakeups
23.6% ( 11.7)D postgres
This is with a cleanly installed database, not being accessed at all.
Cheers!