On 02/23/2010 10:10 PM, Wu Fengguang wrote:
Now that we lifts readahead size from 128KB to 512KB, the MMAP_LOTSAMISS shall be shrinked accordingly. We shrink it a bit more, so that for sparse random access patterns, only 10*512KB or ~5MB memory will be wasted, instead of the previous 100*128KB or ~12MB. The new threshold "10" is still big enough to avoid turning off read-around for typical executable/lib page faults. CC: Nick Piggin<npiggin@xxxxxxx> Signed-off-by: Wu Fengguang<fengguang.wu@xxxxxxxxx>
Acked-by: Rik van Riel <riel@xxxxxxxxxx> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>