QoS Power Management

Jeremy — Thu, 27 Sep 2007 12:59:05 +0000

"The following patches implement a more generalized infrastructure (than latency.c) for connecting drivers and subsystem's that could implement power performance optimizations with the data needed to implement such policies," began Mark Gross, describing his Quality of Service power management patchset. He added, "these patches are following up on the discussions and presentations at the power management summit last summer." Mark continued:

"The idea is that from an abstract point of view how much to throttle hardware can be expressed as a function of QoS types of parameters; Latency, throughput, and idle time outs.

"The qos_parameter patch is intended to put into place the registration and notification infrastructure for enabling QoS based policy choices by drivers, where constraints on throttling are communicated through the qos_params module."

Power Saving Projects

Jeremy — Fri, 21 Sep 2007 08:53:55 +0000

"Intel's Open Source Technology Center is pleased to announce the LessWatts.org project, an open source project for saving power on Linux," began an email posted to the lkml by Arjan van de Ven. The announcement continued:

"LessWatts.org is a place to bring users, developers and distribution makers together around power reduction for linux machines, from mobile to desktop to server to datacenter. LessWatts.org is about a system-level approach to power savings, from the lowest level device drivers in the kernel to the most advanced desktop applications. LessWatts.org is about things you can do to reduce power usage. LessWatts.org is about longer battery life, a lower airconditioning bill, about reducing the impact of computers on the environment."

The announcement went on to note, "at this time of launching the LessWatts.org project, the technology development projects are those that Intel has started, is involved in or has just started working on, such as PowerTOP, Tickless Idle, Graphics and various link power management techniques. We'd like to invite all developers and projects that focus on power saving to join the LessWatts.org effort and community."

KernelTrap - power management

QoS Power Management

Power Saving Projects