Re: Profiling Emacs on M$

[Jason Rumney]

dhruva wrote:
> Hello,
>  Now that I have a working MSVC build on M$, I started with profiling
> the code using Kernrate (a sampling based non-intrusive profiler by
> M$). I am attaching the results for a very basic start, opening a
> couple of emacs source files (font.c, files.el) and closing the emacs
> session.
>   

The results show most of the CPU time being taken by garbage collection, 
which is to be expected with light use.
Since the current problems seem to be in displaying fonts, you need to 
start emacs, then make it do lots of redisplay before quitting, so that 
redisplay functions dominate.  When I do this using Free profiling 
software (gprof), it shows w32font_text_extents as being the most 
significant consumer of CPU time outside of garbage collection and 
waiting for input. It would be interesting if you can replicate those 
results, as that would prove that using proprietary software does not 
give any advantage here.