Hi Luca, On 27 January 2016 at 15:45, Luca Abeni <[email protected]> wrote: > Hi Peter, > > On Wed, 27 Jan 2016 15:39:46 +0100 > Peter Zijlstra <[email protected]> wrote: > >> On Wed, Jan 27, 2016 at 02:36:51PM +0100, Luca Abeni wrote: >> > Ok, so I implemented this idea, and I am currently testing it... >> > The first experiments seem to show that there are no problems, but I >> > just tried some simple workload (rt-app, or some other periodic >> > taskset scheduled by SCHED_DEADLINE). Do you have suggestions for >> > more "interesting" (and meaningful) tests/experiments? >> >> rt-app is the workload generator, right? >> >> I think the most interesting part here is the switched_from path, so >> you'd want the workload to include a !rt task that gets PI boosted to >> deadline every so often. >> >> Also, does rt-app let tasks die? Or does it spawn N tasks and lets >> them run jobs until the end? I think you want to put some effort in >> task_dead_dl() as well. >> >> After that, just make sure rt-app generates a _lot_ of tasks such that >> the migration thing gets used. > > Thanks; I'll check with Juri how to do all of this with rt-app (or how > to modify rt-app to stress these functionalities).
This version of workload generator /rt-app can do all sequences you want: https://git.linaro.org/power/rt-app.git/shortlog/refs/heads/master The merge of these changes are ongoing but still not finished. Let me know if you need help to use it and create some use cases Regards, Vincent > > > Thanks, > Luca
