Study current scheduler behavior

Registered by Vincent Guittot on 2011-04-19

Study if the current behavior of the scheduler matches the embedded system requirements
 thread about shed_mc policy : http://thread.gmane.org/gmane.linux.kernel/827696

wiki page:https://wiki.linaro.org/WorkingGroups/PowerManagement/Specs/sched_mc

Blueprint information

Status:
Complete
Approver:
Amit Kucheria
Priority:
High
Drafter:
Vincent Guittot
Direction:
Approved
Assignee:
Vincent Guittot
Definition:
Approved
Series goal:
Accepted for trunk
Implementation:
Implemented
Milestone target:
milestone icon 2011.08
Started by
Amit Kucheria on 2011-08-12
Completed by
Mounir Bsaibes on 2011-09-16

Related branches

Sprints

Whiteboard

we have at least 3 different solutions for decreasing core load:
 -sched_mc and sched_smt with load balancing
 -cgroup + cpuset
 -cpu hotplug

* define the power saving level targeted by sched_mc
* check if the current policy matches the targeted power saving level

these work items were moved to https://blueprints.launchpad.net/linaro-pm-wg/+spec/sched-mc-for-arm
[vincent-guittot] define the cpu load target for which Arm platform should run on 1 core : TODO
[vincent-guittot] compare load balancing threshold and one core cpu load target in power mode : TODO
[linaro-pm-wg] consider re-opening discussion around power-aware scheduler on LKML : TODO

(?)

Work Items

Work items for 2011.08:
[vincent-guittot] study load balancing threshold: DONE

Dependency tree

* Blueprints in grey have been implemented.

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