The goal of the project is to make the scheduler aware of the underlaying hyperthreading CPUs, in order to make better decisions.

First of all, I will have to build up the testing infrastructure (a physical machine with at least 2 physical cores, each of them having HT enable). At this step I will develop a test suite that stress up the scheduler and make different measurements. These measurements will be the reference for comparing the results obtained after modifying the scheduler.

In the next step, I have to develop a mechanism for grouping the CPUs in domains (scheduling domains or in other words: CPUs that are on the same physical core). The actual implementation of the HT aware is described in a previous post [1] on the DragonFlyBSD list and in my application [2].

[1] http://leaf.dragonflybsd.org/mailarchive/kernel/2012-03/msg00066.html

[2] http://www.google-melange.com/gsoc/proposal/review/google/gsoc2012/mihaicarabas/1