Re: Long time to exit summary buffer, possible speed enhancement?

[Ken Raeburn <raeburn@cygnus.com>]

Steinar Bang <sb@metis.no> writes:

> In those newsgroup, with big gaps, I see slow startup time (slow for
> the number of articles unmarked + number of new).
> 
> Are there any traces I can make to find out where it uses its time?

As Lars said earlier in this thread:

> Anyways, range handling isn't all that slow, so the ~10 second delay
> probably is caused by something else.  Try `(setq debug-on-quit t)'
> and then `C-g' when things "hang" (sorta).  The resulting backtrace
> should tell you which function is being slow.

I recommend doing this but hitting C-g a few times during the slow
bits.  If it's in the same code most of the time you trap into the
debugger, that's a more convincing case for that code being the time
sink.  If you do it only once, you could get a traceback in a part
that's actually very efficient if your timing happens to be poor.

Ken