Andrew Morton writes: > Plus, we can get in a situation where take a cache-cold, known-zero page > from the pte quicklist when there is a cache-hot, non-zero page sitting in > the page allocator. I suspect that zeroing the cache-hot page would take a > similar amount of time to a single miss agains the cache-cold page.
That is certainly the case on powerpc. > I'm not saying that I _know_ that the quicklists are pointless, but I don't > think it's established that they are pointful. I don't see much point to them. For powerpc, I would rather grab an arbitrary page and zero it than get a page off a quicklist. > Maybe, dunno. It was apparently a win on powerpc many years ago. I had a My recollection was that it wasn't a win, but it was a long time ago... Paul. - 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/
