On Monday 25 May 2015 19:47:15 Catalin Marinas wrote: > On 25 May 2015, at 13:01, Jungseok Lee <jungseoklee85@xxxxxxxxx> 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>