[be] Re: bibledit-git polling

[Dan Dennison]

On Jan 28, 2009, at 4:53 PM, Dan Dennison wrote:

I built bibledit-git using the '-pg' option. This results in gprof- 
style outputs.

> I need to double-check this on Windows, but it seems to me off-hand  
> that this loop is going to be CPU-expensive regardless of platform.  
> bibledit-git is so expensive CPU-wise on Windows right now that it's  
> hard to recommend for laptop users.

See my gprof output for details, but  
InterprocessCommunication::receive() is the most expensive function on  
Win32, with a tie between vector manipulations (likely from  
InterprocessCommunication::get_payload()), and g_usleep().

It seems that every call to g_usleep is invoking a thread. I think  
perhaps thread spawns are much slower on Win32, and thus the CPU  
slamming.

GProf output is at https://thedennisons.org/~dand/bibledit-git- 
gprof.txt.gz

Thoughts?

dan :)