On Monday 25 May 2015 19:47:15 Catalin Marinas wrote: > On 25 May 2015, at 13:01, Jungseok Lee <jungseokle...@gmail.com> wrote: > > >> Could the stack size be reduced to 8KB perhaps? > > > > I guess probably not. > > > > A commit, 845ad05e, says that 8KB is not enough to cover SpecWeb benchmark. > > We could go back to 8KB stacks if we implement support for separate IRQ > stack on arm64. It's not too complicated, we would have to use SP0 for > (kernel) threads > and SP1 for IRQ handlers.
I think most architectures that see a lot of benchmarks have moved to irqstacks at some point, that definitely sounds like a useful idea, even if the implementation turns out to be a bit more tricky than what you describe. There are a lot of workloads that would benefit from having lower per-thread memory cost. Arnd -- 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/