Re: [ANNOUNCE] Tools to analyse PM and scheduling behaviour

[Amit Kucheria]

Peter Zijlstra <peterz@xxxxxxxxxxxxx> writes:

> On Fri, Aug 08, 2014 at 07:24:01PM +0530, Amit Kucheria wrote:
>> Workload Generator Details
>> --------------------------
>> The Workload Generator is based on rt-app. Shared resources, waits, signals
>> and locking order can be specified for each thread in a JSON description to
>> construct complex interdependencies. This allows simulation of interesting
>> use-cases. The repository contains examples of a mp3 and web-browsing
>> workload.
>> 
>> The method to construct the JSON description is quite manual currently. We
>> capture the trace of a workload of interest (say, on Android) and analyse
>> it in kernelshark. We then construct the JSON description by hand until its
>> resultant trace looks similar to the trace from the real workload.
>> 
>> The immediate goal is to expand the library to cover the common mobile
>> workloads. Weâre also working with the rt-app maintainer to get our changes
>> merged.
>
> With the end goal of having a program convert a trace into a JSON
> description I take it?

Either that or re-evaluate if perf record and playback can actually do
away with the need to do this.
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