On Thu, Jan 11, 2007 at 10:08:55AM +1100, David Chinner wrote: > On Wed, Jan 10, 2007 at 03:04:15PM -0800, Christoph Lameter wrote: > > On Thu, 11 Jan 2007, David Chinner wrote: > > > > > The performance and smoothness is fully restored on 2.6.20-rc3 > > > by setting dirty_ratio down to 10 (from the default 40), so > > > something in the VM is not working as well as it used to.... > > > > dirty_background_ratio is left as is at 10? > > Yes.
FWIW, setting dirty_ratio to 20 instead of 10 fixes the most of the erraticness of the writeback and most of the performance as well. Cheers, Dave. -- Dave Chinner Principal Engineer SGI Australian Software Group - 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/
