sched_mc/hotplug/cpuidle power measurement shootout
- Decide on 2-3 testcases to run on atleast two member boards
(OMAP Panda/Blaze, u8500 href/snowball)
- Test against sched_mc, hotplug and cpuidle to show the
strengths and weaknesses of each
- Start discussions in community regarding the findings
- Figure out how cgroups and cpusets fit into the mix? (Daniel?)
- Integrate tests in LAVA?
- Create wiki documentation about the pros and cons of each and
best practices
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:
-
2011.09
- Started by
- Amit Kucheria
- Completed by
- Amit Kucheria
Related branches
Related bugs
Sprints
Whiteboard
Headline:
Understand the pros and cons of sched_mc, cpuidle, hotplug, cgroups and cpusets
Acceptance:
A wiki page that details the pros and cons of each in various workloads and recommendations
Results:
https:/
https:/
https:/
Work Items
Work items:
[vincent-guittot] Make hotplug power measurements on st-e u8500 platform: DONE
[vincent-guittot] decide on test workload and publish to wiki: DONE
[vincent-guittot] Publish measurement methodology (what was measured, how board was hooked up, etc.): DONE
[daniel-lezcano] Investigate cgroups and cpuset-based strategy for idling a core: DONE
[daniel-lezcano] Study how cpuset for PM can be used in conjunction with other cpuset configuration: DONE
[daniel-lezcano] Create a wiki page and document the investigaton as well as giving the cpuset script: DONE
[mturquette] specify the low-power mp3 usecase used for hotplug measurements on omap platform (https:/
