Am 28.05.2014 18:08, schrieb Steven Rostedt: > On Wed, 28 May 2014 17:43:50 +0200 > Richard Weinberger <richard.weinber...@gmail.com> wrote: > > >>> diff --git a/arch/x86/include/asm/page_64_types.h >>> b/arch/x86/include/asm/page_64_types.h >>> index 8de6d9cf3b95..678205195ae1 100644 >>> --- a/arch/x86/include/asm/page_64_types.h >>> +++ b/arch/x86/include/asm/page_64_types.h >>> @@ -1,7 +1,7 @@ >>> #ifndef _ASM_X86_PAGE_64_DEFS_H >>> #define _ASM_X86_PAGE_64_DEFS_H >>> >>> -#define THREAD_SIZE_ORDER 1 >>> +#define THREAD_SIZE_ORDER 2 >>> #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) >>> #define CURRENT_MASK (~(THREAD_SIZE - 1)) >> >> Do you have any numbers of the performance impact of this? >> > > What performance impact are you looking for? Now if the system is short > on memory, it would probably cause issues in creating tasks. But other > than that, I'm not sure what you are looking for.
Allocating more continuous memory for every thread is not cheap. I'd assume that such a change will cause more pressure on the allocator. Thanks, //richard -- 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/
