Hi Serge,

I think I've emailed to you before.  This report is out if date and misleading.

Can we please do one of two things:

1. Correct it to reflect what is happening.

2. Stop sending them.

FYI. There is no requirement for any tuning guide for MP this has already been 
produced and delivered to licensee's.

Our beta patchset is considered functionally complete and we are looking to 
Linaro to support this in the LSK until the upstreaming activities for MP have 
been completed by ARM.

While the upstreaming activities are ongoing we are looking for second LEB 
reflecting tip of tree to also be available mainly targeting the relevant folk 
who are working on the refactored patchset.

Suggest you work with SteveB and RobinR to ensure we are aligned.

Thanks

Roger

Sent from yet another low power  ARM device

On 23 Jun 2013, at 20:03, "Serge Broslavsky" <serge.broslav...@linaro.org> 
wrote:

> https://wiki.linaro.org/projects/big.LITTLE.MP
>
> Work Items for functional completion:
>  https://wiki.linaro.org/projects/big.LITTLE.MP/WorkItems
>
>
> Main Project page:
>  https://launchpad.net/linaro-big-little-system
>
>
> Development
> ============
>
> 1. big.LITTLE IKS
>
>    IKS snapshot:
>        git://git.linaro.org/landing-teams/working/arm/kernel.git
>
>    More information:
>        http://lists.linaro.org/pipermail/linaro-dev/2013-May/015882.html
>
>    Also the latest Linaro 13.05 release contains big.LITTLE release
>    with IKS code integrated. By default MP is used (IKS is off).
>    To enable IKS:
>
>        echo 1 > /sys/kernel/bL_switcher/active
>
>    Same is planned for Linaro 12.06 release.
>
>
> 2. big.LITTLE MP
>
>    There are two branches, which are functionally equivalent - they
>    tweak the scheduler to select the right processes to move to the A15
>    and try to decrease power consumption while maintaining performance.
>
>
>    * A Reference  big.LITTLE MP patchset (based on ARM Beta patchset),
>      merged with linux-linaro:
>
>        
> https://git.linaro.org/gitweb?p=arm/big.LITTLE/mp.git;a=shortlog;h=refs/heads/linux-linaro-MP-reference-20130524.0
>
>        Recommended to be used for testing.
>
>    * And an upstream (work in progress) big.LITTLE MP patchset:
>
>        
> https://git.linaro.org/gitweb?p=arm/big.LITTLE/mp.git;a=shortlog;h=refs/heads/linux-linaro-MP-upstream-20130524.0
>
>        Being worked on in order to achieve the performance/power
>        numbers of the reference one. Upstream discussion is ongoing.
>
>    * Documentation:
>
>        Code flow is already covered by several LWN articles. See
>        https://wiki.linaro.org/WorkingGroups/PowerManagement/Doc/ in
>        the Articles section. We will provide a tuning guide once we
>        have reached agreement upstream.
>
>    * Automated benchmarking code is ready:
>
>       - Golden Board is to be used for running daily tests.
>       - Both branches - reference and upstream to be tested in the
>         future.
>
>
> Blueprint Updates
> ------------------
>
> * 
> https://blueprints.launchpad.net/linaro-big-little-system/+spec/big-little-mp-integration-tree
>
>      Ongoing work.
>
>
> * 
> https://blueprints.launchpad.net/linaro-big-little-system/+spec/small-task-packing-in-scheduler
>
>    - Big variation previously seen is not visible on the Golden
>      Board. It might be caused by an USB stick with insufficiently
>      high speed - working on this hypothesis.
>
>    - Latest patchset (not yet published upstream) shows low delta with
>      the reference patch set results.
>
>
> *  
> https://blueprints.launchpad.net/linaro-big-little-system/+spec/sched-cooperation-with-dvfs
>
>      - Postponed. Priorities are to be re-evaluated.
>
>
> QA
> ==
>
> big.LITTLE MP LAVA Dashboard
> http://validation.linaro.org/lava-server/dashboard/image-reports/linaro-android_vexpress-linaro-mp
>
> Testing (week 25):
>
> sched_tests.git   #Cases  #Run  Pass  Fail Absolute pass rate
> Regression          20     19    19     0     100 %
> mpbasicsuite        14     10    10     0     100 %
> mpcoresuite         10      6     6     0      84 % [1][2]
> mpextendedsuite     20     10     7     3      70 % [3]
> mploadbalance        2      2     2     0     100 %
>
> ---
> [1] https://bugs.launchpad.net/linaro-big-little-system/+bug/1188655
> [2] core_test_scn02.1 reported failed in full execution and passed
>    independently: https://pastebin.linaro.org/view/21cf80f3
> [3] https://bugs.launchpad.net/linaro-big-little-system/+bug/1183769
>
>
> Bugs:
> https://bugs.launchpad.net/linaro-big-little-system/+bugs?field.tag=bl-mp
>
>    Highlight: Bug 1166246 - Lockup on post 3.9 IKS kernel
>
>        - can be hardware or software bug, investigation continues.
>        - seems to be related to MMC being in use (switching to USB
>          stick can be used as a reliable workaround).
>
>    Highlight: Bug 1183821 - perf failed to count events on A15 cluster
>
>        - existing perf code is at the end of it's lifecycle.
>        - a rewrite is ongoing.
>        - will stay unfixed for Linaro 13.6 release.
>
> --
> Best Regards,
> Serge Broslavsky <serge.broslav...@linaro.org>
>
> Project Manager, Linaro
> M: +37129426328  IRC: ototo  Skype: serge.broslavsky
> http://linaro.org | Open source software for ARM SoCs
>
> _______________________________________________
> linaro-dev mailing list
> linaro-dev@lists.linaro.org
> http://lists.linaro.org/mailman/listinfo/linaro-dev
>

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