Christoph Lameter <[EMAIL PROTECTED]> wrote: > > On Thu, 17 Mar 2005, Andrew Morton wrote: > > > > > It's hard to know what to think about this without benchmarking > numbers. > > http://oss.sgi.com/projects/page_fault_performance/
Oh no, not that page again ;) Seems to say that prezeroing makes negligible difference to kernel builds, but speeds up a big malloc+memset by 3x to 4x, yes? Are there any real-worldish workloads which show an appreciable benefit? The large speedup for a big memset seems odd - I assume it's simply transferring CPU load from the user's process over to kscrubd. Or is it the fancy page-zeroing hardware? How do we differentiate the two? Are there any workloads which are seeing a benefit on a CPU which doesn't have the zeroing hardware? - 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/
