* Re: [ANNOUNCE] Tools to analyse PM and scheduling behaviour
[not found] <CAP245DUSAHO_VBoBMy4KQaaA6_0a-i3Y3u4utnK8ji3UMVniyA@mail.gmail.com>
@ 2014-08-13 11:22 ` Peter Zijlstra
2014-08-13 18:41 ` Amit Kucheria
0 siblings, 1 reply; 2+ messages in thread
From: Peter Zijlstra @ 2014-08-13 11:22 UTC (permalink / raw)
To: Amit Kucheria
Cc: Ingo Molnar, Rafael J. Wysocki, Linux Kernel Mailing List,
Linux PM list, Gross, Mark, Paul McKenney, Morten Rasmussen,
Dietmar Eggemann, Preeti U Murthy, Daniel Lezcano,
Vincent Guittot, Mike Turquette, Juri Lelli, sched-tools
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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. We’re 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?
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [ANNOUNCE] Tools to analyse PM and scheduling behaviour
2014-08-13 11:22 ` [ANNOUNCE] Tools to analyse PM and scheduling behaviour Peter Zijlstra
@ 2014-08-13 18:41 ` Amit Kucheria
0 siblings, 0 replies; 2+ messages in thread
From: Amit Kucheria @ 2014-08-13 18:41 UTC (permalink / raw)
To: Peter Zijlstra
Cc: Ingo Molnar, Rafael J. Wysocki, Linux Kernel Mailing List,
Linux PM list, Gross, Mark, Paul McKenney, Morten Rasmussen,
Dietmar Eggemann, Preeti U Murthy, Daniel Lezcano,
Vincent Guittot, Mike Turquette, Juri Lelli, sched-tools
Peter Zijlstra <peterz@infradead.org> 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. We’re 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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2014-08-13 11:22 ` [ANNOUNCE] Tools to analyse PM and scheduling behaviour Peter Zijlstra
2014-08-13 18:41 ` Amit Kucheria
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