On 8/11/05, Gleb Natapov <[email protected]> wrote: > What about the idea that was floating around about new VM flag that will > instruct kernel to copy pages belonging to the vma on fork instead of mark > them as cow? > I think the big problem with this idea is the huge memory regions that InfiniBand applications are dealing with. If the application forks (or uses system()), you are going to copy a huge chunk of data (most likely swapping since the application memory footprint is probably already tuned to consume the available physical memory). And the copy is really for nothing since in most (or at least many) cases the child is just going to exec anyway. -- Bill Jordan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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