SIGs/PowerManagementBaseOS: Difference between revisions

Latest revision as of 23:06, 17 September 2016

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

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

tuned-adm provides various profiles eg. laptop-battery-powersave. These profiles are setting environment values which can reasonably work with resources.

Offer comprehensive documentation of system tunable with examples and effects

Power consumption of hardware components

Goal:

Make overview which component is the biggest power eater
Focus to these power eaters

Plan: Complete missing data in the HW table. Please, help to fill missing data ...

@@ Line 1: / Line 1: @@
-== Fedora PowerManagement BaseOS SIG ==
+== Wakeups / Disk IO / Network IO ==
-=== Wakeups / Disk IO / Network IO ===
 Goal: Reduce wakeup count of userland applications and unnecessary network and disk IO.
@@ Line 10: / Line 8: @@
 * netdevstat (tuned-utils)
-==== Tracker bugs ====
+=== Tracker bugs ===
 * [https://bugzilla.redhat.com/show_bug.cgi?id=454582 Tracker bug for over-eager apps that won't let disks spin down]
 * [https://bugzilla.redhat.com/show_bug.cgi?id=204948 Tracker bug for applications waking up a lot]
-=== Monitoring / Auditing ===
+== Monitoring / Auditing ==
 Goal: Provide new tools to monitor / audit system usage to help user identify problematic applications, hardware or drivers.
@@ Line 22: / Line 20: @@
 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 ===
+== Dynamic adaptive tuning ==
 Goal: Monitoring of system resources and adaptive tuning "on-the-fly" of affected components.
@@ Line 37: / Line 35: @@
 Read only GIT: http://git.fedorahosted.org/git/tuned.git
 R/W GIT repo: ssh://git.fedorahosted.org/git/tuned.git
-=== Configuration ===
+== Configuration ==
+tuned-adm provides various profiles eg. laptop-battery-powersave. These profiles
+are setting environment values which can reasonably work with resources.
+* Offer comprehensive documentation of system tunable with examples and effects
-Problem: System tuning at the moment is too difficult.
+== Power consumption of hardware components ==
-Goal: Make it easier (obviously :) ).
+Goal:
+* Make overview which component is the biggest power eater
+* Focus to these power eaters
-Plan:
+Plan: Complete missing data in the [[SIGs/PowerManagementHWtable|HW table]]. Please, help to fill missing data ...
-* 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

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