[be] Re: bibledit-git polling

[Dan Dennison]

Another follow-up on this..

I changed the g_usleep interval from 100 to 10000 and bibledit-git no  
longer polls on Windows!

    while ((method_called_type != method) && (time(0) <= (oldtime +  
timeout))) {
      g_usleep(10000);
    }

Thoughts?

dan :)

On Jan 28, 2009, at 6:43 PM, Dan Dennison wrote:

> 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 :)