SIGs/PowerManagementBaseOS

Fedora PowerManagement BaseOS SIG

Wakeups / Disk IO / Network IO

Goal: Reduce wakeup count of userland applications and unnecessary network and disk IO.

Plan: Audit system using various tools, provide guidance & fixes for problems.

• powertop
• diskdevstat (tuned-utils)
• netdevstat (tuned-utils)

Tracker bugs

• Tracker bug for over-eager apps that won't let disks spin down
• Tracker bug for applications waking up a lot

Monitoring / Auditing

Goal: Provide new tools to monitor / audit system usage to help user identify problematic applications, hardware or drivers.

Plan: Ship already existing tools and work on new ones.

Current newest tool is a memory tracing analyser which will allow a very detailed tracking of how an application allocated and deallocated memory over it's lifetime.

Dynamic adaptive tuning

Goal: Monitoring of system resources and adaptive tuning "on-the-fly" of affected components.

Project: tuned

Plan:

• Integration of ktune and tuned: Static vs. dynamic tuning parts + performance vs. power tuning options
• New monitoring and tuning plugin for CPUs (using PM-QOS for CPUs)
• New disk tuning algorithm for a more gradual tuning
• Fix for network tuning in combination with NM (grace period in NM for lost connections and/or mechanism in NM for changing device speeds)

Homepage: https://fedorahosted.org/tuned/

Read only GIT: http://git.fedorahosted.org/git/tuned.git

R/W GIT repo: ssh://git.fedorahosted.org/git/tuned.git

Configuration

Problem: System tuning at the moment is too difficult.

Goal: Make it easier (obviously :) ).

Plan:

• Offer config tool with "profiles" which the user can switch to using a simple command line tool
• Allow creating, editing and deleting of profiles
• Offer comprehensive documentation of system tunables with examples and effects