On Mon, Jul 25, 2011 at 3:23 AM, Paolo Bonzini <bonz...@gnu.org> wrote: > On 07/25/2011 06:42 AM, Xinliang David Li wrote: >> >> FYI the performance impact of this option with SPEC06 (built with >> google_46 compiler and measured on a core2 box). The base line number >> is FDO, and ref number is FDO + reorder_with_partitioning. >> >> xalancbmk improves> 3.5% >> perlbench improves> 1.5% >> dealII and bzip2 degrades about 1.4%. >> >> Note the partitioning scheme is not tuned at all -- there is not even >> a tunable parameter to play with. > > Did you check what is pushed down to the cold section in these cases?
I have not done any analysis on them . David > > Paolo >
