Re: [Boost-build] Profiling code question

From: Vladimir Prus (ghost_at_[hidden])
Date: 2006-07-27 09:16:43

On Thursday 27 July 2006 17:10, Rene Rivera wrote:
> Vladimir Prus wrote:
> > Hi,
> > I'm still surprised by our profiling output. Here's what I see when
> > sorted by "net" time:
> >
> >  --count--    --gross--   --net--     --name--
> >  3.56E+06     2.62E+06    2.62E+06    [OTHER]
> >  82,825.00    9.60E+05    250,000.00  FILE_DIRSCAN
> >  138,826.00   3.50E+05    230,000.00  BUILTIN_GLOB_BACK
> >
> >
> > So, most of the net time is spent in "OTHER".
> >
> > 1. What's exactly that?
>
> It's basically the hashing. Specifically hashitem() in "hash.c".

Given that hashing typically happens when looking up variables inside some 
rules, would not it be better to attribute those times to rules? This way, I 
have no idea which rules actually use that much hashing.

-- 
Vladimir Prus
http://vladimir_prus.blogspot.com
Boost.Build V2: http://boost.org/boost-build2