On Wed, Feb 14, 2007 at 09:16:46PM +0000, Alan wrote: > On Wed, 14 Feb 2007 17:08:39 -0200 > Marcelo Tosatti <[EMAIL PROTECTED]> wrote: > > > > > movntq instruction is supported by Geode CPU's, so use > > fast_clear_page/fast_copy_page versions that have it. > > Is it actually faster for macro performance not just microbenchmarking ?
A COW intensive private mmap() benchmark shows the kernel spending _more_ time inside mmx_copy_page() with movntq than with movq. So its not clear whether the patch is actually a win, please drop it. - 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/
