On 27 Mar 2005 19:12:20 +0200 Andi Kleen <[EMAIL PROTECTED]> wrote: > With non temporal stores > you guarantee at least one hard cache miss directly after > the return to user space.
This is true if the cacheline were not present already at the time of the non-temporal store. I know what you're trying to say, I'm just clarifying. The real question is if a large enough ratio of those cachelines in the page get similarly accessed. I happen to think the answer to that for any real example is yes. Yet, I have no way to prove this. It would be cool to do some hacks under Xen or user-mode Linux to get some real statistics about this. Actually, this could be done also with hacks to valgrind or other similar tools. QEMU could also be used. - 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/
