On Fri, 30 Jan 2015 00:42:47 +0800 Xunlei Pang <pang.xun...@linaro.org> wrote:
> I think the responsiveness is the most important feature for RT tasks, > so I think: > response latency > cache > SMT in significance. Unfortunately, sometimes cache affects response latency. > > I was wondering if we can take the cpuidle state into account like > current find_idlest_cpu() for CFS? > cpupri_find() can be easily modified to indicate the CPUPRI_IDLE case, > then we can select > an optimal idle cpu to improve RT tasks' responsiveness. For other > cases(mostly non-idle cpu), Even if that idle cpu happens to be on another NUMA node? -- Steve > I think we can rely on the existent sched_domain iteraction to select > a cache-hot cpu without > caring too much about SMT. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
