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Re: The status of statprof

From: Andy Wingo
Subject: Re: The status of statprof
Date: Tue, 17 Sep 2013 20:03:00 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux)

On Tue 17 Sep 2013 14:37, Panicz Maciej Godek <address@hidden> writes:

> So my question is: what is the status of the statprof?

It's fine :)

> (define (increase x)
> (sleep 1)
> (1+ x))
> (begin
> (statprof-reset 0 500 #t)
> (statprof-start)
> (let loop ((i 0))
> (if (< i 10)
> (loop (increase i))
> i))
> (statprof-stop)
> (statprof-display))

Statprof runs on SIGPROF ticks, driven by setitimer.  These ticks run
after a constant amount of CPU time spent.  Your test doesn't consume
any CPU time because it's sleeping, so no ticks get recorded.

Also note that using the "statprof" function is much easier.



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