Re: Compute precise counter histogram at LTO

2013-04-24 Thread Teresa Johnson
On Wed, Apr 24, 2013 at 6:37 AM, Teresa Johnson wrote: > On Mon, Apr 22, 2013 at 11:16 AM, Jan Hubicka wrote: >> Hi, >> sorry for getting back to this late. >>> >> That's a larger error than I had expected from the merging, although >>> >> as you note it is an approximation so there is going to b

Re: Compute precise counter histogram at LTO

2013-04-24 Thread Teresa Johnson
On Mon, Apr 22, 2013 at 11:16 AM, Jan Hubicka wrote: > Hi, > sorry for getting back to this late. >> >> That's a larger error than I had expected from the merging, although >> >> as you note it is an approximation so there is going to be some amount >> >> of error. If the error is that large then

Re: Compute precise counter histogram at LTO

2013-04-22 Thread Jan Hubicka
Hi, sorry for getting back to this late. > >> That's a larger error than I had expected from the merging, although > >> as you note it is an approximation so there is going to be some amount > >> of error. If the error is that large then maybe there is a better > >> merging algorithm, since in the

Re: Compute precise counter histogram at LTO

2013-04-04 Thread Teresa Johnson
On Mon, Apr 1, 2013 at 2:27 PM, Rong Xu wrote: > > > > On Fri, Mar 29, 2013 at 1:06 PM, Teresa Johnson > wrote: >> >> On Fri, Mar 29, 2013 at 11:16 AM, Jan Hubicka wrote: >> > Hi, >> > currently we use Theresa's code to determine hot/cold decisions based on >> > counter. >> > Histogram of gcov c

Re: Compute precise counter histogram at LTO

2013-03-29 Thread Teresa Johnson
On Fri, Mar 29, 2013 at 11:16 AM, Jan Hubicka wrote: > Hi, > currently we use Theresa's code to determine hot/cold decisions based on > counter. > Histogram of gcov counters is computed and then threshold is identified so > 99.9% of counter increments gets done in hot region. There are some prob