On Thu, 28 Jan 2016 14:05:44 +0100 Vincent Guittot <[email protected]> wrote:
> 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 Thanks Vincent; I am going to have a look at it. Are the "lock_order" and "resources" task parameters documented or described somewhere? Thanks, Luca > 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 > >
