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BUG #5397: powertop reports excessive wakeups

From: "Steve White" <Stevan_White(at)hotmail(dot)com>
To: pgsql-bugs(at)postgresql(dot)org
Subject: BUG #5397: powertop reports excessive wakeups
Date: 2010-03-30 20:53:51
Message-ID: 201003302053.o2UKro7U089776@wwwmaster.postgresql.org (view raw or flat)
Thread:
Lists: pgsql-bugs
The following bug has been logged online:

Bug reference:      5397
Logged by:          Steve White
Email address:      Stevan_White(at)hotmail(dot)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!

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